[X86] Lower v16i16->v8i16 truncate using an 'and' with 255, an extract_subvector, and a packuswb instruction.

[craig.topper]

Summary

This is an improvement over the two pshufbs and punpcklqdq we'd get otherwise.

[RKSimon]

LGTM - cheers

lib/Target/X86/X86ISelLowering.cpp

if ((VT == MVT::v8i16) && (InVT == MVT::v8i32)) {
     OpHi = DAG.getBitcast(MVT::v4i32, OpHi);
 
     // The MOVLHPS Mask:
     static const int ShufMask2[] = {0, 1, 4, 5};
     SDValue res = DAG.getVectorShuffle(MVT::v4i32, DL, OpLo, OpHi, ShufMask2);
     return DAG.getBitcast(MVT::v8i16, res);
   }
 
+  if (VT == MVT::v16i8 && InVT == MVT::v16i16) {
+    // Use an AND to force a PACKUS.
+    In = DAG.getNode(ISD::AND, DL, InVT, In, DAG.getConstant(255, DL, InVT));
+
+    SDValue InLo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, MVT::v8i16, In,
+                               DAG.getIntPtrConstant(0, DL));
+    SDValue InHi = DAG.getNode(ISD::EXTRACT_SUBVECTOR, DL, MVT::v8i16, In,
+                               DAG.getIntPtrConstant(8, DL));
+    InLo = DAG.getBitcast(VT, InLo);
+    InHi = DAG.getBitcast(VT, InHi);
+
+    return DAG.getVectorShuffle(VT, DL, InLo, InHi,
+                                { 0,  2,  4,  6,  8, 10, 12, 14,
+                                 16, 18, 20, 22, 24, 26, 28, 30});
+  }
+
   // Handle truncation of V256 to V128 using shuffles.
   assert(VT.is128BitVector() && InVT.is256BitVector() && "Unexpected types!");
 
   assert(Subtarget.hasAVX() && "256-bit vector without AVX!");
 
   unsigned NumElems = VT.getVectorNumElements();
   MVT NVT = MVT::getVectorVT(VT.getVectorElementType(), NumElems * 2);
 

test/CodeGen/X86/avg.ll

 ; AVX1-NEXT:    vpsrld $1, %xmm14, %xmm4
 ; AVX1-NEXT:    vpackusdw %xmm3, %xmm4, %xmm3
 ; AVX1-NEXT:    vpsrld $1, %xmm11, %xmm4
 ; AVX1-NEXT:    vpsrld $1, %xmm8, %xmm5
 ; AVX1-NEXT:    vpackusdw %xmm5, %xmm4, %xmm4
 ; AVX1-NEXT:    vpsrld $1, %xmm9, %xmm5
 ; AVX1-NEXT:    vpsrld $1, %xmm10, %xmm6
 ; AVX1-NEXT:    vpackusdw %xmm5, %xmm6, %xmm5
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm6 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm6, %xmm5, %xmm5
-; AVX1-NEXT:    vpshufb %xmm6, %xmm4, %xmm4
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm4 = xmm4[0],xmm5[0]
-; AVX1-NEXT:    vpshufb %xmm6, %xmm3, %xmm3
-; AVX1-NEXT:    vpshufb %xmm6, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm3[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm6 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm6, %xmm5, %xmm5
+; AVX1-NEXT:    vpand %xmm6, %xmm4, %xmm4
+; AVX1-NEXT:    vpackuswb %xmm5, %xmm4, %xmm4
+; AVX1-NEXT:    vpand %xmm6, %xmm3, %xmm3
+; AVX1-NEXT:    vpand %xmm6, %xmm1, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
 ; AVX1-NEXT:    vinsertf128 $1, %xmm4, %ymm1, %ymm1
-; AVX1-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
-; AVX1-NEXT:    vpshufb %xmm6, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX1-NEXT:    vpand %xmm6, %xmm2, %xmm2
+; AVX1-NEXT:    vpand %xmm6, %xmm0, %xmm0
+; AVX1-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vmovups %ymm1, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: avg_v48i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmovzxbd {{.*#+}} ymm0 = mem[0],zero,zero,zero,mem[1],zero,zero,zero,mem[2],zero,zero,zero,mem[3],zero,zero,zero,mem[4],zero,zero,zero,mem[5],zero,zero,zero,mem[6],zero,zero,zero,mem[7],zero,zero,zero

 ; AVX2-NEXT:    vpsrld $1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpsrld $1, %ymm4, %ymm4
 ; AVX2-NEXT:    vpsrld $1, %ymm3, %ymm3
 ; AVX2-NEXT:    vpsrld $1, %ymm2, %ymm2
 ; AVX2-NEXT:    vpsrld $1, %ymm1, %ymm1
 ; AVX2-NEXT:    vpsrld $1, %ymm7, %ymm5
 ; AVX2-NEXT:    vextracti128 $1, %ymm5, %xmm6
 ; AVX2-NEXT:    vpackusdw %xmm6, %xmm5, %xmm5
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm6 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm6, %xmm5, %xmm5
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm6 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm6, %xmm5, %xmm5
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm7
 ; AVX2-NEXT:    vpackusdw %xmm7, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm6, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm5[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm6, %xmm1, %xmm1
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm5, %xmm1
 ; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm5
 ; AVX2-NEXT:    vpackusdw %xmm5, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
+; AVX2-NEXT:    vpand %xmm6, %xmm2, %xmm2
 ; AVX2-NEXT:    vextracti128 $1, %ymm3, %xmm5
 ; AVX2-NEXT:    vpackusdw %xmm5, %xmm3, %xmm3
-; AVX2-NEXT:    vpshufb %xmm6, %xmm3, %xmm3
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
+; AVX2-NEXT:    vpand %xmm6, %xmm3, %xmm3
+; AVX2-NEXT:    vpackuswb %xmm3, %xmm2, %xmm2
 ; AVX2-NEXT:    vinserti128 $1, %xmm1, %ymm2, %ymm1
 ; AVX2-NEXT:    vextracti128 $1, %ymm4, %xmm2
 ; AVX2-NEXT:    vpackusdw %xmm2, %xmm4, %xmm2
-; AVX2-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
+; AVX2-NEXT:    vpand %xmm6, %xmm2, %xmm2
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm3
 ; AVX2-NEXT:    vpackusdw %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpshufb %xmm6, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm2[0],xmm0[0]
+; AVX2-NEXT:    vpand %xmm6, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm0, %xmm2, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    vmovdqu %ymm1, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: avg_v48i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vmovdqa (%rdi), %xmm0

 ; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15]
 ; AVX1-NEXT:    vpshufb %xmm1, %xmm8, %xmm0
 ; AVX1-NEXT:    vpshufb %xmm1, %xmm11, %xmm2
 ; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm2[0],xmm0[0]
 ; AVX1-NEXT:    vmovlhps {{.*#+}} xmm2 = xmm10[0],xmm9[0]
 ; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm3 = xmm3[0],xmm12[0]
 ; AVX1-NEXT:    vshufps {{.*#+}} xmm2 = xmm3[0,2],xmm2[0,2]
 ; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm3 = xmm5[0],xmm4[0]
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm4, %xmm0, %xmm0
 ; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm2
 ; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm5 = xmm7[0],xmm6[0]
 ; AVX1-NEXT:    vshufps {{.*#+}} xmm3 = xmm5[0,2],xmm3[0,2]
 ; AVX1-NEXT:    vpshufb %xmm1, %xmm3, %xmm1
 ; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
-; AVX1-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vpand %xmm4, %xmm1, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    addq $24, %rsp
 ; AVX1-NEXT:    popq %rbx
 ; AVX1-NEXT:    popq %r12
 ; AVX1-NEXT:    popq %r13
 ; AVX1-NEXT:    popq %r14
 ; AVX1-NEXT:    popq %r15
 ; AVX1-NEXT:    popq %rbp

 ; AVX2-NEXT:    vinserti128 $1, %xmm9, %ymm8, %ymm8
 ; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
 ; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm3[0],xmm2[0]
 ; AVX2-NEXT:    vinserti128 $1, %xmm0, %ymm1, %ymm0
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm1 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm1, %ymm8, %ymm2
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm3 = xmm5[0],xmm4[0]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm5 = xmm7[0],xmm6[0]
 ; AVX2-NEXT:    vinserti128 $1, %xmm3, %ymm5, %ymm3
 ; AVX2-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-NEXT:    vinserti128 $1, %xmm3, %ymm0, %ymm0
 ; AVX2-NEXT:    vpshufb %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    addq $16, %rsp
 ; AVX2-NEXT:    popq %rbx
 ; AVX2-NEXT:    popq %r12
 ; AVX2-NEXT:    popq %r13
 ; AVX2-NEXT:    popq %r14
 ; AVX2-NEXT:    popq %r15
 ; AVX2-NEXT:    popq %rbp

test/CodeGen/X86/avx-trunc.ll

 ; CHECK-NEXT:    retq
   %B = trunc <8 x i32> %A to <8 x i16>
   ret <8 x i16>%B
 }
 
 define <16 x i8> @trunc_16_8(<16 x i16> %A) nounwind uwtable readnone ssp{
 ; CHECK-LABEL: trunc_16_8:
 ; CHECK:       # %bb.0:
+; CHECK-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; CHECK-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; CHECK-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; CHECK-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; CHECK-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; CHECK-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; CHECK-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; CHECK-NEXT:    vzeroupper
 ; CHECK-NEXT:    retq
   %B = trunc <16 x i16> %A to <16 x i8>
   ret <16 x i8> %B
 }
 
 

test/CodeGen/X86/avx2-arith.ll

 }
 
 define <16 x i8> @mul_v16i8(<16 x i8> %i, <16 x i8> %j) nounwind readnone {
 ; X32-LABEL: mul_v16i8:
 ; X32:       # %bb.0:
 ; X32-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; X32-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X32-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; X32-NEXT:    vpand {{\.LCPI.*}}, %ymm0, %ymm0
 ; X32-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X32-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X32-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X32-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X32-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X32-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X32-NEXT:    vzeroupper
 ; X32-NEXT:    retl
 ;
 ; X64-LABEL: mul_v16i8:
 ; X64:       # %bb.0:
 ; X64-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; X64-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X64-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; X64-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; X64-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X64-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X64-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X64-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X64-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X64-NEXT:    vzeroupper
 ; X64-NEXT:    retq
   %x = mul <16 x i8> %i, %j
   ret <16 x i8> %x
 }
 
 define <32 x i8> @mul_v32i8(<32 x i8> %i, <32 x i8> %j) nounwind readnone {
 ; X32-LABEL: mul_v32i8:
 ; X32:       # %bb.0:
 ; X32-NEXT:    vextracti128 $1, %ymm1, %xmm2
 ; X32-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; X32-NEXT:    vextracti128 $1, %ymm0, %xmm3
 ; X32-NEXT:    vpmovzxbw {{.*#+}} ymm3 = xmm3[0],zero,xmm3[1],zero,xmm3[2],zero,xmm3[3],zero,xmm3[4],zero,xmm3[5],zero,xmm3[6],zero,xmm3[7],zero,xmm3[8],zero,xmm3[9],zero,xmm3[10],zero,xmm3[11],zero,xmm3[12],zero,xmm3[13],zero,xmm3[14],zero,xmm3[15],zero
 ; X32-NEXT:    vpmullw %ymm2, %ymm3, %ymm2
-; X32-NEXT:    vextracti128 $1, %ymm2, %xmm3
-; X32-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X32-NEXT:    vpshufb %xmm4, %xmm3, %xmm3
-; X32-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; X32-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
+; X32-NEXT:    vmovdqa {{.*#+}} ymm3 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; X32-NEXT:    vpand %ymm3, %ymm2, %ymm2
+; X32-NEXT:    vextracti128 $1, %ymm2, %xmm4
+; X32-NEXT:    vpackuswb %xmm4, %xmm2, %xmm2
 ; X32-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; X32-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X32-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; X32-NEXT:    vpand %ymm3, %ymm0, %ymm0
 ; X32-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X32-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; X32-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; X32-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X32-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X32-NEXT:    vinserti128 $1, %xmm2, %ymm0, %ymm0
 ; X32-NEXT:    retl
 ;
 ; X64-LABEL: mul_v32i8:
 ; X64:       # %bb.0:
 ; X64-NEXT:    vextracti128 $1, %ymm1, %xmm2
 ; X64-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; X64-NEXT:    vextracti128 $1, %ymm0, %xmm3
 ; X64-NEXT:    vpmovzxbw {{.*#+}} ymm3 = xmm3[0],zero,xmm3[1],zero,xmm3[2],zero,xmm3[3],zero,xmm3[4],zero,xmm3[5],zero,xmm3[6],zero,xmm3[7],zero,xmm3[8],zero,xmm3[9],zero,xmm3[10],zero,xmm3[11],zero,xmm3[12],zero,xmm3[13],zero,xmm3[14],zero,xmm3[15],zero
 ; X64-NEXT:    vpmullw %ymm2, %ymm3, %ymm2
-; X64-NEXT:    vextracti128 $1, %ymm2, %xmm3
-; X64-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X64-NEXT:    vpshufb %xmm4, %xmm3, %xmm3
-; X64-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; X64-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
+; X64-NEXT:    vmovdqa {{.*#+}} ymm3 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; X64-NEXT:    vpand %ymm3, %ymm2, %ymm2
+; X64-NEXT:    vextracti128 $1, %ymm2, %xmm4
+; X64-NEXT:    vpackuswb %xmm4, %xmm2, %xmm2
 ; X64-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; X64-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X64-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; X64-NEXT:    vpand %ymm3, %ymm0, %ymm0
 ; X64-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X64-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; X64-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; X64-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X64-NEXT:    vinserti128 $1, %xmm2, %ymm0, %ymm0
 ; X64-NEXT:    retq
   %x = mul <32 x i8> %i, %j
   ret <32 x i8> %x
 }
 
 define <4 x i64> @mul_v4i64(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
 ; X32-LABEL: mul_v4i64:

test/CodeGen/X86/avx2-conversions.ll

 ; X64-NEXT:    retq
   %t = sext <16 x i8> %z to <16 x i16>
   ret <16 x i16> %t
 }
 
 define <16 x i8> @trunc_16i16_16i8(<16 x i16> %z) {
 ; X32-LABEL: trunc_16i16_16i8:
 ; X32:       # %bb.0:
+; X32-NEXT:    vpand {{\.LCPI.*}}, %ymm0, %ymm0
 ; X32-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X32-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X32-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X32-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X32-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X32-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X32-NEXT:    vzeroupper
 ; X32-NEXT:    retl
 ;
 ; X64-LABEL: trunc_16i16_16i8:
 ; X64:       # %bb.0:
+; X64-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; X64-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X64-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X64-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X64-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X64-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X64-NEXT:    vzeroupper
 ; X64-NEXT:    retq
   %t = trunc <16 x i16> %z to <16 x i8>
   ret <16 x i8> %t
 }
 
 define <4 x i64> @load_sext_test1(<4 x i32> *%ptr) {
 ; X32-LABEL: load_sext_test1:

test/CodeGen/X86/combine-mul.ll

 ; SSE-NEXT:    packuswb %xmm0, %xmm1
 ; SSE-NEXT:    movdqa %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX-LABEL: PR35579:
 ; AVX:       # %bb.0:
 ; AVX-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; AVX-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX-NEXT:    vzeroupper
 ; AVX-NEXT:    retq
   %r = mul <16 x i8> %x, <i8 0, i8 1, i8 2, i8 1, i8 4, i8 1, i8 2, i8 1, i8 8, i8 1, i8 2, i8 1, i8 4, i8 1, i8 2, i8 1>
   ret <16 x i8> %r
 }
 

test/CodeGen/X86/pmul.ll

 ; SSE41-NEXT:    packuswb %xmm0, %xmm1
 ; SSE41-NEXT:    movdqa %xmm1, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX2-LABEL: mul_v16i8c:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: mul_v16i8c:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX512F-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero

 ; SSE41-NEXT:    movdqa %xmm2, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX2-LABEL: mul_v16i8:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: mul_v16i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX512F-NEXT:    vpmullw %ymm1, %ymm0, %ymm0

 ; SSE41-NEXT:    retq
 ;
 ; AVX2-LABEL: mul_v32i8c:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [117,117,117,117,117,117,117,117,117,117,117,117,117,117,117,117]
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm1, %ymm1
-; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm4, %xmm3, %xmm3
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm3[0]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm3 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm3, %ymm1, %ymm1
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm4
+; AVX2-NEXT:    vpackuswb %xmm4, %xmm1, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm3, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: mul_v32i8c:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX512F-NEXT:    vmovdqa {{.*#+}} ymm2 = [117,117,117,117,117,117,117,117,117,117,117,117,117,117,117,117]
 ; AVX512F-NEXT:    vpmullw %ymm2, %ymm1, %ymm1

 ;
 ; AVX2-LABEL: mul_v32i8:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm3
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm3 = xmm3[0],zero,xmm3[1],zero,xmm3[2],zero,xmm3[3],zero,xmm3[4],zero,xmm3[5],zero,xmm3[6],zero,xmm3[7],zero,xmm3[8],zero,xmm3[9],zero,xmm3[10],zero,xmm3[11],zero,xmm3[12],zero,xmm3[13],zero,xmm3[14],zero,xmm3[15],zero
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm3, %ymm2
-; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm3
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm4, %xmm3, %xmm3
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm3 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm3, %ymm2, %ymm2
+; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm4
+; AVX2-NEXT:    vpackuswb %xmm4, %xmm2, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm3, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vinserti128 $1, %xmm2, %ymm0, %ymm0
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: mul_v32i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm3 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX512F-NEXT:    vpmullw %ymm2, %ymm3, %ymm2

 ; SSE41-NEXT:    retq
 ;
 ; AVX2-LABEL: mul_v64i8c:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm3 = [117,117,117,117,117,117,117,117,117,117,117,117,117,117,117,117]
 ; AVX2-NEXT:    vpmullw %ymm3, %ymm2, %ymm2
-; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm4
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm5, %xmm4, %xmm4
-; AVX2-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm4[0]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm4 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm4, %ymm2, %ymm2
+; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm5
+; AVX2-NEXT:    vpackuswb %xmm5, %xmm2, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm3, %ymm0, %ymm0
-; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm4
-; AVX2-NEXT:    vpshufb %xmm5, %xmm4, %xmm4
-; AVX2-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm4[0]
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm5
+; AVX2-NEXT:    vpackuswb %xmm5, %xmm0, %xmm0
 ; AVX2-NEXT:    vinserti128 $1, %xmm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; AVX2-NEXT:    vpmullw %ymm3, %ymm2, %ymm2
-; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm4
-; AVX2-NEXT:    vpshufb %xmm5, %xmm4, %xmm4
-; AVX2-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm4[0]
+; AVX2-NEXT:    vpand %ymm4, %ymm2, %ymm2
+; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm5
+; AVX2-NEXT:    vpackuswb %xmm5, %xmm2, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm3, %ymm1, %ymm1
+; AVX2-NEXT:    vpand %ymm4, %ymm1, %ymm1
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
-; AVX2-NEXT:    vpshufb %xmm5, %xmm3, %xmm3
-; AVX2-NEXT:    vpshufb %xmm5, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm3[0]
+; AVX2-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: mul_v64i8c:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX512F-NEXT:    vmovdqa {{.*#+}} ymm3 = [117,117,117,117,117,117,117,117,117,117,117,117,117,117,117,117]
 ; AVX512F-NEXT:    vpmullw %ymm3, %ymm2, %ymm2

 ; SSE41-NEXT:    retq
 ;
 ; AVX2-LABEL: mul_v64i8:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm4
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm4 = xmm4[0],zero,xmm4[1],zero,xmm4[2],zero,xmm4[3],zero,xmm4[4],zero,xmm4[5],zero,xmm4[6],zero,xmm4[7],zero,xmm4[8],zero,xmm4[9],zero,xmm4[10],zero,xmm4[11],zero,xmm4[12],zero,xmm4[13],zero,xmm4[14],zero,xmm4[15],zero
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm5
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm5 = xmm5[0],zero,xmm5[1],zero,xmm5[2],zero,xmm5[3],zero,xmm5[4],zero,xmm5[5],zero,xmm5[6],zero,xmm5[7],zero,xmm5[8],zero,xmm5[9],zero,xmm5[10],zero,xmm5[11],zero,xmm5[12],zero,xmm5[13],zero,xmm5[14],zero,xmm5[15],zero
-; AVX2-NEXT:    vpmullw %ymm4, %ymm5, %ymm5
-; AVX2-NEXT:    vextracti128 $1, %ymm5, %xmm6
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm4, %xmm6, %xmm6
-; AVX2-NEXT:    vpshufb %xmm4, %xmm5, %xmm5
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm5 = xmm5[0],xmm6[0]
+; AVX2-NEXT:    vpmullw %ymm4, %ymm5, %ymm4
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm5 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm5, %ymm4, %ymm4
+; AVX2-NEXT:    vextracti128 $1, %ymm4, %xmm6
+; AVX2-NEXT:    vpackuswb %xmm6, %xmm4, %xmm4
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm5, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
-; AVX2-NEXT:    vinserti128 $1, %xmm5, %ymm0, %ymm0
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vinserti128 $1, %xmm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm3, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
-; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm5
-; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm5 = xmm5[0],zero,xmm5[1],zero,xmm5[2],zero,xmm5[3],zero,xmm5[4],zero,xmm5[5],zero,xmm5[6],zero,xmm5[7],zero,xmm5[8],zero,xmm5[9],zero,xmm5[10],zero,xmm5[11],zero,xmm5[12],zero,xmm5[13],zero,xmm5[14],zero,xmm5[15],zero
-; AVX2-NEXT:    vpmullw %ymm2, %ymm5, %ymm2
-; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm5
-; AVX2-NEXT:    vpshufb %xmm4, %xmm5, %xmm5
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm5[0]
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm4
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm4 = xmm4[0],zero,xmm4[1],zero,xmm4[2],zero,xmm4[3],zero,xmm4[4],zero,xmm4[5],zero,xmm4[6],zero,xmm4[7],zero,xmm4[8],zero,xmm4[9],zero,xmm4[10],zero,xmm4[11],zero,xmm4[12],zero,xmm4[13],zero,xmm4[14],zero,xmm4[15],zero
+; AVX2-NEXT:    vpmullw %ymm2, %ymm4, %ymm2
+; AVX2-NEXT:    vpand %ymm5, %ymm2, %ymm2
+; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm4
+; AVX2-NEXT:    vpackuswb %xmm4, %xmm2, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm3 = xmm3[0],zero,xmm3[1],zero,xmm3[2],zero,xmm3[3],zero,xmm3[4],zero,xmm3[5],zero,xmm3[6],zero,xmm3[7],zero,xmm3[8],zero,xmm3[9],zero,xmm3[10],zero,xmm3[11],zero,xmm3[12],zero,xmm3[13],zero,xmm3[14],zero,xmm3[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm3, %ymm1, %ymm1
+; AVX2-NEXT:    vpand %ymm5, %ymm1, %ymm1
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
-; AVX2-NEXT:    vpshufb %xmm4, %xmm3, %xmm3
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm3[0]
+; AVX2-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vinserti128 $1, %xmm2, %ymm1, %ymm1
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: mul_v64i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm4 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; AVX512F-NEXT:    vpmovzxbw {{.*#+}} ymm5 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX512F-NEXT:    vpmullw %ymm4, %ymm5, %ymm4

test/CodeGen/X86/prefer-avx256-mask-extend.ll

 ; AVX256-LABEL: testv16i1_sext_v16i8:
 ; AVX256:       # %bb.0:
 ; AVX256-NEXT:    vpxor %xmm0, %xmm0, %xmm0
 ; AVX256-NEXT:    vpcmpeqd (%rdi), %ymm0, %k1
 ; AVX256-NEXT:    vpcmpeqd (%rsi), %ymm0, %k2
 ; AVX256-NEXT:    vpcmpeqd %ymm0, %ymm0, %ymm0
 ; AVX256-NEXT:    vmovdqa32 %ymm0, %ymm1 {%k2} {z}
 ; AVX256-NEXT:    vpmovdw %ymm1, %xmm1
-; AVX256-NEXT:    vpacksswb %xmm0, %xmm1, %xmm1
+; AVX256-NEXT:    vpsrlw $8, %xmm1, %xmm1
 ; AVX256-NEXT:    vmovdqa32 %ymm0, %ymm0 {%k1} {z}
 ; AVX256-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX256-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
-; AVX256-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX256-NEXT:    vpsrlw $8, %xmm0, %xmm0
+; AVX256-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX256-NEXT:    vzeroupper
 ; AVX256-NEXT:    retq
 ;
 ; AVX512VL-LABEL: testv16i1_sext_v16i8:
 ; AVX512VL:       # %bb.0:
 ; AVX512VL-NEXT:    vpxor %xmm0, %xmm0, %xmm0
 ; AVX512VL-NEXT:    vpcmpeqd (%rdi), %ymm0, %k0
 ; AVX512VL-NEXT:    vpcmpeqd (%rsi), %ymm0, %k1

test/CodeGen/X86/prefer-avx256-mask-shuffle.ll

 ; AVX256VL-NEXT:    vpblendw {{.*#+}} xmm1 = xmm2[0,1,2],xmm1[3],xmm2[4],xmm1[5],xmm2[6,7]
 ; AVX256VL-NEXT:    vpmovzxwd {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero
 ; AVX256VL-NEXT:    vpslld $31, %ymm1, %ymm1
 ; AVX256VL-NEXT:    vptestmd %ymm1, %ymm1, %k0
 ; AVX256VL-NEXT:    kunpckbw %k1, %k0, %k0
 ; AVX256VL-NEXT:    kshiftrw $8, %k0, %k2
 ; AVX256VL-NEXT:    vmovdqa32 %ymm0, %ymm1 {%k2} {z}
 ; AVX256VL-NEXT:    vpmovdw %ymm1, %xmm1
-; AVX256VL-NEXT:    vpacksswb %xmm0, %xmm1, %xmm1
+; AVX256VL-NEXT:    vpsrlw $8, %xmm1, %xmm1
 ; AVX256VL-NEXT:    vmovdqa32 %ymm0, %ymm0 {%k1} {z}
 ; AVX256VL-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX256VL-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
-; AVX256VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX256VL-NEXT:    vpsrlw $8, %xmm0, %xmm0
+; AVX256VL-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX256VL-NEXT:    vzeroupper
 ; AVX256VL-NEXT:    retq
 ;
 ; AVX512VL-LABEL: shuf16i1_3_6_22_12_3_7_7_0_3_6_1_13_3_21_7_0:
 ; AVX512VL:       # %bb.0:
 ; AVX512VL-NEXT:    vpxor %xmm0, %xmm0, %xmm0
 ; AVX512VL-NEXT:    vpcmpeqd (%rdi), %ymm0, %k1
 ; AVX512VL-NEXT:    vpcmpeqd (%rsi), %ymm0, %k2

 ; AVX256VL-NEXT:    vextracti128 $1, %ymm1, %xmm1
 ; AVX256VL-NEXT:    vpmovzxwd {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero
 ; AVX256VL-NEXT:    vpslld $31, %ymm1, %ymm1
 ; AVX256VL-NEXT:    vptestmd %ymm1, %ymm1, %k0
 ; AVX256VL-NEXT:    kunpckbw %k1, %k0, %k0
 ; AVX256VL-NEXT:    kshiftrw $8, %k0, %k2
 ; AVX256VL-NEXT:    vmovdqa32 %ymm0, %ymm1 {%k2} {z}
 ; AVX256VL-NEXT:    vpmovdw %ymm1, %xmm1
-; AVX256VL-NEXT:    vpacksswb %xmm0, %xmm1, %xmm1
+; AVX256VL-NEXT:    vpsrlw $8, %xmm1, %xmm1
 ; AVX256VL-NEXT:    vmovdqa32 %ymm0, %ymm0 {%k1} {z}
 ; AVX256VL-NEXT:    vpmovdw %ymm0, %xmm0
-; AVX256VL-NEXT:    vpacksswb %xmm0, %xmm0, %xmm0
-; AVX256VL-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX256VL-NEXT:    vpsrlw $8, %xmm0, %xmm0
+; AVX256VL-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX256VL-NEXT:    vinserti128 $1, %xmm0, %ymm0, %ymm0
 ; AVX256VL-NEXT:    retq
 ;
 ; AVX512NOBW-LABEL: shuf32i1_3_6_22_12_3_7_7_0_3_6_1_13_3_21_7_0_3_6_22_12_3_7_7_0_3_6_1_13_3_21_7_0:
 ; AVX512NOBW:       # %bb.0:
 ; AVX512NOBW-NEXT:    vpxor %xmm1, %xmm1, %xmm1
 ; AVX512NOBW-NEXT:    vpcmpeqb %ymm1, %ymm0, %ymm0
 ; AVX512NOBW-NEXT:    vpmovsxbd %xmm0, %zmm1

test/CodeGen/X86/prefer-avx256-trunc.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512vl,+prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX256 --check-prefix=AVX256NOBW
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512vl,-prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX512 --check-prefix=AVX512NOBW --check-prefix=AVX512VL
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f,+prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX512 --check-prefix=AVX512NOBW --check-prefix=AVX512F
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f,-prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX512 --check-prefix=AVX512NOBW --check-prefix=AVX512F
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw,+prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX512 --check-prefix=AVX512BW
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw,-prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX512 --check-prefix=AVX512BW
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw,+avx512vl,+prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX256 --check-prefix=AVX256BWVL
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw,+avx512vl,-prefer-256-bit | FileCheck %s --check-prefix=CHECK --check-prefix=AVX256 --check-prefix=AVX512BWVL
 
 define <16 x i8> @testv16i16_trunc_v16i8(<16 x i16> %x) {
 ; AVX256NOBW-LABEL: testv16i16_trunc_v16i8:
 ; AVX256NOBW:       # %bb.0:
+; AVX256NOBW-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX256NOBW-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX256NOBW-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX256NOBW-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX256NOBW-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX256NOBW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX256NOBW-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX256NOBW-NEXT:    vzeroupper
 ; AVX256NOBW-NEXT:    retq
 ;
 ; AVX512NOBW-LABEL: testv16i16_trunc_v16i8:
 ; AVX512NOBW:       # %bb.0:
 ; AVX512NOBW-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512NOBW-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512NOBW-NEXT:    vzeroupper

test/CodeGen/X86/psubus.ll

 ; AVX2-NEXT:    vextracti128 $1, %ymm5, %xmm6
 ; AVX2-NEXT:    vpackssdw %xmm6, %xmm5, %xmm5
 ; AVX2-NEXT:    vpacksswb %xmm5, %xmm4, %xmm4
 ; AVX2-NEXT:    vpsubd %ymm3, %ymm2, %ymm2
 ; AVX2-NEXT:    vpsubd %ymm0, %ymm1, %ymm0
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm1 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufb %ymm1, %ymm2, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpandn %xmm0, %xmm4, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: test14:
 ; AVX512:       # %bb.0: # %vector.ph
 ; AVX512-NEXT:    vpmovzxbd {{.*#+}} zmm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero,xmm0[2],zero,zero,zero,xmm0[3],zero,zero,zero,xmm0[4],zero,zero,zero,xmm0[5],zero,zero,zero,xmm0[6],zero,zero,zero,xmm0[7],zero,zero,zero,xmm0[8],zero,zero,zero,xmm0[9],zero,zero,zero,xmm0[10],zero,zero,zero,xmm0[11],zero,zero,zero,xmm0[12],zero,zero,zero,xmm0[13],zero,zero,zero,xmm0[14],zero,zero,zero,xmm0[15],zero,zero,zero
 ; AVX512-NEXT:    vpcmpnltud %zmm0, %zmm1, %k1

test/CodeGen/X86/shuffle-vs-trunc-256-widen.ll

 ; AVX512-NEXT:    retq
   %vec = load <32 x i8>, <32 x i8>* %L
   %strided.vec = shufflevector <32 x i8> %vec, <32 x i8> undef, <16 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14, i32 16, i32 18, i32 20, i32 22, i32 24, i32 26, i32 28, i32 30>
   store <16 x i8> %strided.vec, <16 x i8>* %S
   ret void
 }
 
 define void @trunc_v16i16_to_v16i8(<32 x i8>* %L, <16 x i8>* %S) nounwind {
-; AVX-LABEL: trunc_v16i16_to_v16i8:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vmovdqa (%rdi), %xmm0
-; AVX-NEXT:    vmovdqa 16(%rdi), %xmm1
-; AVX-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX-NEXT:    vmovdqa %xmm0, (%rsi)
-; AVX-NEXT:    retq
+; AVX1-LABEL: trunc_v16i16_to_v16i8:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vmovaps (%rdi), %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vmovdqa %xmm0, (%rsi)
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: trunc_v16i16_to_v16i8:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vmovdqa (%rdi), %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vmovdqa %xmm0, (%rsi)
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_v16i16_to_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero,mem[4],zero,mem[5],zero,mem[6],zero,mem[7],zero,mem[8],zero,mem[9],zero,mem[10],zero,mem[11],zero,mem[12],zero,mem[13],zero,mem[14],zero,mem[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, (%rsi)
 ; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;

test/CodeGen/X86/shuffle-vs-trunc-256.ll

 ; AVX512-NEXT:    retq
   %vec = load <32 x i8>, <32 x i8>* %L
   %strided.vec = shufflevector <32 x i8> %vec, <32 x i8> undef, <16 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14, i32 16, i32 18, i32 20, i32 22, i32 24, i32 26, i32 28, i32 30>
   store <16 x i8> %strided.vec, <16 x i8>* %S
   ret void
 }
 
 define void @trunc_v16i16_to_v16i8(<32 x i8>* %L, <16 x i8>* %S) nounwind {
-; AVX-LABEL: trunc_v16i16_to_v16i8:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vmovdqa (%rdi), %xmm0
-; AVX-NEXT:    vmovdqa 16(%rdi), %xmm1
-; AVX-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX-NEXT:    vmovdqa %xmm0, (%rsi)
-; AVX-NEXT:    retq
+; AVX1-LABEL: trunc_v16i16_to_v16i8:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vmovaps (%rdi), %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
+; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vmovdqa %xmm0, (%rsi)
+; AVX1-NEXT:    vzeroupper
+; AVX1-NEXT:    retq
+;
+; AVX2-LABEL: trunc_v16i16_to_v16i8:
+; AVX2:       # %bb.0:
+; AVX2-NEXT:    vmovdqa (%rdi), %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vmovdqa %xmm0, (%rsi)
+; AVX2-NEXT:    vzeroupper
+; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_v16i16_to_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero,mem[4],zero,mem[5],zero,mem[6],zero,mem[7],zero,mem[8],zero,mem[9],zero,mem[10],zero,mem[11],zero,mem[12],zero,mem[13],zero,mem[14],zero,mem[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, (%rsi)
 ; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;

test/CodeGen/X86/vector-mul.ll

 ; X64-XOP:       # %bb.0:
 ; X64-XOP-NEXT:    vpshlb {{.*}}(%rip), %xmm0, %xmm0
 ; X64-XOP-NEXT:    retq
 ;
 ; X64-AVX2-LABEL: mul_v16i8_1_2_4_8_1_2_4_8_1_2_4_8_1_2_4_8:
 ; X64-AVX2:       # %bb.0:
 ; X64-AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X64-AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; X64-AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X64-AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X64-AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X64-AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X64-AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X64-AVX2-NEXT:    vzeroupper
 ; X64-AVX2-NEXT:    retq
   %1 = mul <16 x i8> %a0, <i8 1, i8 2, i8 4, i8 8, i8 1, i8 2, i8 4, i8 8, i8 1, i8 2, i8 4, i8 8, i8 1, i8 2, i8 4, i8 8>
   ret <16 x i8> %1
 }
 
 ;
 ; PowOf2 + 1 (uniform)

 ; X64-XOP-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
 ; X64-XOP-NEXT:    vpperm {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14],xmm1[0,2,4,6,8,10,12,14]
 ; X64-XOP-NEXT:    retq
 ;
 ; X64-AVX2-LABEL: mul_v16i8_2_3_9_17_33_65_129_2_3_9_17_33_65_129_2_3:
 ; X64-AVX2:       # %bb.0:
 ; X64-AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X64-AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; X64-AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X64-AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X64-AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X64-AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X64-AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X64-AVX2-NEXT:    vzeroupper
 ; X64-AVX2-NEXT:    retq
   %1 = mul <16 x i8> %a0, <i8 2, i8 3, i8 9, i8 17, i8 33, i8 65, i8 129, i8 2, i8 3, i8 9, i8 17, i8 33, i8 65, i8 129, i8 2, i8 3>
   ret <16 x i8> %1
 }
 
 ;
 ; PowOf2 - 1 (uniform)

 ; X64-XOP-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
 ; X64-XOP-NEXT:    vpperm {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14],xmm1[0,2,4,6,8,10,12,14]
 ; X64-XOP-NEXT:    retq
 ;
 ; X64-AVX2-LABEL: mul_v16i8_0_1_3_7_15_31_63_127_0_1_3_7_15_31_63_127:
 ; X64-AVX2:       # %bb.0:
 ; X64-AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; X64-AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; X64-AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; X64-AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; X64-AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; X64-AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; X64-AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; X64-AVX2-NEXT:    vzeroupper
 ; X64-AVX2-NEXT:    retq
   %1 = mul <16 x i8> %a0, <i8 0, i8 1, i8 3, i8 7, i8 15, i8 31, i8 63, i8 127, i8 0, i8 1, i8 3, i8 7, i8 15, i8 31, i8 63, i8 127>
   ret <16 x i8> %1
 }
 
 define <2 x i64> @mul_v2i64_68_132(<2 x i64> %x) nounwind {
 ; X86-LABEL: mul_v2i64_68_132:

test/CodeGen/X86/vector-reduce-mul.ll

 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: test_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
-; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[1,1,2,3]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm1 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vpshufd {{.*#+}} xmm2 = xmm0[1,1,2,3]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
-; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
-; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX2-NEXT:    vpsrld $16, %xmm0, %xmm1
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
+; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vpsrld $16, %xmm0, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
-; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
+; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpsrlw $8, %xmm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpmullw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
 ; AVX2-NEXT:    # kill: def $al killed $al killed $eax
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512BW-LABEL: test_v16i8:
 ; AVX512BW:       # %bb.0:
 ; AVX512BW-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]

 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: test_v32i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
-; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm1 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vpshufd {{.*#+}} xmm2 = xmm0[2,3,0,1]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
-; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
-; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[1,1,2,3]
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
+; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vpshufd {{.*#+}} xmm2 = xmm0[1,1,2,3]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
-; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
-; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX2-NEXT:    vpsrld $16, %xmm0, %xmm1
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
+; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
+; AVX2-NEXT:    vpsrld $16, %xmm0, %xmm2
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
-; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
+; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpsrlw $8, %xmm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpmullw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
 ; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
 ; AVX2-NEXT:    # kill: def $al killed $al killed $eax
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512BW-LABEL: test_v32i8:
 ; AVX512BW:       # %bb.0:
 ; AVX512BW-NEXT:    vextracti128 $1, %ymm0, %xmm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: test_v64i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm3 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm3, %ymm3
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm2, %ymm3, %ymm3
 ; AVX2-NEXT:    vextracti128 $1, %ymm3, %xmm4
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm4, %xmm4
-; AVX2-NEXT:    vpshufb %xmm2, %xmm3, %xmm3
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm3 = xmm3[0],xmm4[0]
+; AVX2-NEXT:    vpackuswb %xmm4, %xmm3, %xmm3
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm0
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm3[0],zero,xmm3[1],zero,xmm3[2],zero,xmm3[3],zero,xmm3[4],zero,xmm3[5],zero,xmm3[6],zero,xmm3[7],zero,xmm3[8],zero,xmm3[9],zero,xmm3[10],zero,xmm3[11],zero,xmm3[12],zero,xmm3[13],zero,xmm3[14],zero,xmm3[15],zero
 ; AVX2-NEXT:    vpmullw %ymm0, %ymm1, %ymm0
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[1,1,2,3]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpsrld $16, %xmm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpsrlw $8, %xmm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpmullw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
 ; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
 ; AVX2-NEXT:    # kill: def $al killed $al killed $eax
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512BW-LABEL: test_v64i8:
 ; AVX512BW:       # %bb.0:
 ; AVX512BW-NEXT:    vextracti64x4 $1, %zmm0, %ymm1

 ;
 ; AVX2-LABEL: test_v128i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vextracti128 $1, %ymm2, %xmm4
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm4 = xmm4[0],zero,xmm4[1],zero,xmm4[2],zero,xmm4[3],zero,xmm4[4],zero,xmm4[5],zero,xmm4[6],zero,xmm4[7],zero,xmm4[8],zero,xmm4[9],zero,xmm4[10],zero,xmm4[11],zero,xmm4[12],zero,xmm4[13],zero,xmm4[14],zero,xmm4[15],zero
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm5
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm5 = xmm5[0],zero,xmm5[1],zero,xmm5[2],zero,xmm5[3],zero,xmm5[4],zero,xmm5[5],zero,xmm5[6],zero,xmm5[7],zero,xmm5[8],zero,xmm5[9],zero,xmm5[10],zero,xmm5[11],zero,xmm5[12],zero,xmm5[13],zero,xmm5[14],zero,xmm5[15],zero
 ; AVX2-NEXT:    vpmullw %ymm4, %ymm5, %ymm5
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm4 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm4, %ymm5, %ymm5
 ; AVX2-NEXT:    vextracti128 $1, %ymm5, %xmm6
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm4, %xmm6, %xmm6
-; AVX2-NEXT:    vpshufb %xmm4, %xmm5, %xmm5
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm5 = xmm5[0],xmm6[0]
+; AVX2-NEXT:    vpackuswb %xmm6, %xmm5, %xmm5
 ; AVX2-NEXT:    vextracti128 $1, %ymm3, %xmm6
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm6 = xmm6[0],zero,xmm6[1],zero,xmm6[2],zero,xmm6[3],zero,xmm6[4],zero,xmm6[5],zero,xmm6[6],zero,xmm6[7],zero,xmm6[8],zero,xmm6[9],zero,xmm6[10],zero,xmm6[11],zero,xmm6[12],zero,xmm6[13],zero,xmm6[14],zero,xmm6[15],zero
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm7
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm7 = xmm7[0],zero,xmm7[1],zero,xmm7[2],zero,xmm7[3],zero,xmm7[4],zero,xmm7[5],zero,xmm7[6],zero,xmm7[7],zero,xmm7[8],zero,xmm7[9],zero,xmm7[10],zero,xmm7[11],zero,xmm7[12],zero,xmm7[13],zero,xmm7[14],zero,xmm7[15],zero
 ; AVX2-NEXT:    vpmullw %ymm6, %ymm7, %ymm6
+; AVX2-NEXT:    vpand %ymm4, %ymm6, %ymm6
 ; AVX2-NEXT:    vextracti128 $1, %ymm6, %xmm7
-; AVX2-NEXT:    vpshufb %xmm4, %xmm7, %xmm7
-; AVX2-NEXT:    vpshufb %xmm4, %xmm6, %xmm6
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm6 = xmm6[0],xmm7[0]
+; AVX2-NEXT:    vpackuswb %xmm7, %xmm6, %xmm6
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm2[0],zero,xmm2[1],zero,xmm2[2],zero,xmm2[3],zero,xmm2[4],zero,xmm2[5],zero,xmm2[6],zero,xmm2[7],zero,xmm2[8],zero,xmm2[9],zero,xmm2[10],zero,xmm2[11],zero,xmm2[12],zero,xmm2[13],zero,xmm2[14],zero,xmm2[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm3[0],zero,xmm3[1],zero,xmm3[2],zero,xmm3[3],zero,xmm3[4],zero,xmm3[5],zero,xmm3[6],zero,xmm3[7],zero,xmm3[8],zero,xmm3[9],zero,xmm3[10],zero,xmm3[11],zero,xmm3[12],zero,xmm3[13],zero,xmm3[14],zero,xmm3[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm2, %ymm1, %ymm1
+; AVX2-NEXT:    vpand %ymm4, %ymm1, %ymm1
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm1, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm6[0],zero,xmm6[1],zero,xmm6[2],zero,xmm6[3],zero,xmm6[4],zero,xmm6[5],zero,xmm6[6],zero,xmm6[7],zero,xmm6[8],zero,xmm6[9],zero,xmm6[10],zero,xmm6[11],zero,xmm6[12],zero,xmm6[13],zero,xmm6[14],zero,xmm6[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm2 = xmm5[0],zero,xmm5[1],zero,xmm5[2],zero,xmm5[3],zero,xmm5[4],zero,xmm5[5],zero,xmm5[6],zero,xmm5[7],zero,xmm5[8],zero,xmm5[9],zero,xmm5[10],zero,xmm5[11],zero,xmm5[12],zero,xmm5[13],zero,xmm5[14],zero,xmm5[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm2, %ymm1
+; AVX2-NEXT:    vpand %ymm4, %ymm1, %ymm1
 ; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm1, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[2,3,0,1]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpshufd {{.*#+}} xmm1 = xmm0[1,1,2,3]
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpsrld $16, %xmm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpsrlw $8, %xmm0, %xmm1
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero,xmm1[4],zero,xmm1[5],zero,xmm1[6],zero,xmm1[7],zero,xmm1[8],zero,xmm1[9],zero,xmm1[10],zero,xmm1[11],zero,xmm1[12],zero,xmm1[13],zero,xmm1[14],zero,xmm1[15],zero
-; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpmullw %xmm1, %xmm0, %xmm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm0, %xmm0, %xmm0
 ; AVX2-NEXT:    vpextrb $0, %xmm0, %eax
 ; AVX2-NEXT:    # kill: def $al killed $al killed $eax
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512BW-LABEL: test_v128i8:
 ; AVX512BW:       # %bb.0:
 ; AVX512BW-NEXT:    vextracti64x4 $1, %zmm1, %ymm2

test/CodeGen/X86/vector-shift-shl-128.ll

 ; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: constant_shift_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmovzxbw {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero,xmm0[4],zero,xmm0[5],zero,xmm0[6],zero,xmm0[7],zero,xmm0[8],zero,xmm0[9],zero,xmm0[10],zero,xmm0[11],zero,xmm0[12],zero,xmm0[13],zero,xmm0[14],zero,xmm0[15],zero
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; XOP-LABEL: constant_shift_v16i8:
 ; XOP:       # %bb.0:
 ; XOP-NEXT:    vpshlb {{.*}}(%rip), %xmm0, %xmm0
 ; XOP-NEXT:    retq
 ;

test/CodeGen/X86/vector-trunc-math-widen.ll

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_add_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpaddq %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpaddq %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpaddq %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpaddq %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpaddq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_add_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpaddd %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpaddd %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpaddd %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_add_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpaddw %xmm1, %xmm0, %xmm2
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpaddw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_add_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpaddw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_add_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpaddw %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_add_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_add_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    paddb {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_add_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_add_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_add_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_sub_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpsubq %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpsubq %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpsubq %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpsubq %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpsubq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_sub_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubd %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpsubd %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubd %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_sub_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpsubw %xmm1, %xmm0, %xmm2
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpsubw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_sub_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_sub_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpsubw %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_sub_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubq {{.*}}(%rip), %zmm1, %zmm1
 ; AVX512-NEXT:    vpsubq {{.*}}(%rip), %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_sub_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubd {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vpsubd {{.*}}(%rip), %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubd {{.*}}(%rip), %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_sub_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpsubw {{.*}}(%rip), %xmm0, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpsubw {{.*}}(%rip), %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_sub_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubw {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_sub_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpsubw {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm6 = ymm6[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld %xmm6, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm6 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm6 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm6, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm5 = ymm5[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm5 = ymm5[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld %xmm5, %xmm1, %xmm1
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm4 = ymm4[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm4 = ymm4[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld %xmm4, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm6, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm6, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_mul_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm8 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm7, %ymm8, %ymm7
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm8, %ymm3
 ; AVX2-FAST-NEXT:    vpmulld %xmm7, %xmm3, %xmm3
 ; AVX2-FAST-NEXT:    vpermd %ymm6, %ymm8, %ymm6
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm8, %ymm2
 ; AVX2-FAST-NEXT:    vpmulld %xmm6, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm6 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm6 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm6, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm5, %ymm8, %ymm5
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm8, %ymm1
 ; AVX2-FAST-NEXT:    vpmulld %xmm5, %xmm1, %xmm1
 ; AVX2-FAST-NEXT:    vpermd %ymm4, %ymm8, %ymm4
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm8, %ymm0
 ; AVX2-FAST-NEXT:    vpmulld %xmm4, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm6, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm6, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_mul_v16i64_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovqd %zmm3, %ymm3
 ; AVX512F-NEXT:    vpmovqd %zmm1, %ymm1
 ; AVX512F-NEXT:    vpmulld %ymm3, %ymm1, %ymm1

 ;
 ; AVX2-LABEL: trunc_mul_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmulld %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpmulld %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_mul_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmulld %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_mul_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpmullw %xmm1, %xmm0, %xmm2
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpmullw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_mul_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_mul_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm3, %xmm3
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm1, %xmm1
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_mul_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm3, %xmm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm1, %xmm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_mul_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmulld {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_mul_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %xmm1, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_mul_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmulld {{.*}}(%rip), %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_mul_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_mul_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_mul_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_and_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpand %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpand %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpand %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpandq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpandq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_and_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpand %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpandd %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    pand %xmm4, %xmm2
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm3, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_and_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vandps %ymm1, %ymm0, %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_and_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_and_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpand %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_and_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_and_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    pand {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_and_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_and_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_and_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_xor_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpxor %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpxor %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpxor %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpxor %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpxorq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpxorq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_xor_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpxor %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpxor %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpxord %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_xor_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vxorps %ymm1, %ymm0, %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_xor_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpxor %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_xor_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpxor %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_xor_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_xor_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    pxor {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_xor_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_xor_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_xor_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_or_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpor %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpor %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpor %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpor %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vporq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vporq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_or_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpor %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpor %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpord %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_or_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vorps %ymm1, %ymm0, %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_or_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpor %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_or_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpor %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_or_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_or_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    por {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_or_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_or_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_or_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

test/CodeGen/X86/vector-trunc-math.ll

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_add_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpaddq %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpaddq %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpaddq %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpaddq %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpaddq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpaddq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_add_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpaddd %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpaddd %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpaddd %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_add_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpaddw %xmm1, %xmm0, %xmm2
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpaddw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_add_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpaddw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_add_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpaddw %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_add_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_add_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_add_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    paddb {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_add_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_add_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpaddb {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_add_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_sub_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpsubq %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpsubq %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpsubq %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpsubq %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpsubq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_sub_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubd %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpsubd %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubd %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_sub_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpsubw %xmm1, %xmm0, %xmm2
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpsubw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_sub_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_sub_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpsubw %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_sub_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpsubq {{.*}}(%rip), %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubq {{.*}}(%rip), %zmm1, %zmm1
 ; AVX512-NEXT:    vpsubq {{.*}}(%rip), %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_sub_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubd {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vpsubd {{.*}}(%rip), %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_sub_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpsubd {{.*}}(%rip), %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_sub_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpsubw {{.*}}(%rip), %xmm0, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpsubw {{.*}}(%rip), %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_sub_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpsubw {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_sub_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpsubw {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm6 = ymm6[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld %xmm6, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm6 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm6 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm6, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm5 = ymm5[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm5 = ymm5[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld %xmm5, %xmm1, %xmm1
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm4 = ymm4[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm4 = ymm4[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld %xmm4, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm6, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm6, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_mul_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm8 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm7, %ymm8, %ymm7
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm8, %ymm3
 ; AVX2-FAST-NEXT:    vpmulld %xmm7, %xmm3, %xmm3
 ; AVX2-FAST-NEXT:    vpermd %ymm6, %ymm8, %ymm6
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm8, %ymm2
 ; AVX2-FAST-NEXT:    vpmulld %xmm6, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm6 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm6, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm6 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm6, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm5, %ymm8, %ymm5
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm8, %ymm1
 ; AVX2-FAST-NEXT:    vpmulld %xmm5, %xmm1, %xmm1
 ; AVX2-FAST-NEXT:    vpermd %ymm4, %ymm8, %ymm4
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm8, %ymm0
 ; AVX2-FAST-NEXT:    vpmulld %xmm4, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm6, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm6, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_mul_v16i64_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovqd %zmm3, %ymm3
 ; AVX512F-NEXT:    vpmovqd %zmm1, %ymm1
 ; AVX512F-NEXT:    vpmulld %ymm3, %ymm1, %ymm1

 ;
 ; AVX2-LABEL: trunc_mul_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmulld %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpmulld %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_mul_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmulld %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_mul_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpmullw %xmm1, %xmm0, %xmm2
 ; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpmullw %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm1, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm1, %xmm2, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm1 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_mul_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_mul_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmullw %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm3, %xmm3
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpmulld {{.*}}(%rip), %xmm1, %xmm1
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_mul_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm3, %xmm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vpmulld {{.*}}(%rip), %xmm1, %xmm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_mul_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmulld {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_mul_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %xmm1, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_mul_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmulld {{.*}}(%rip), %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_mul_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm1
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
 ; AVX1-NEXT:    vpmullw {{.*}}(%rip), %xmm0, %xmm0
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm1[0],xmm0[0]
+; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = [255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vpand %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vpand %xmm2, %xmm1, %xmm1
+; AVX1-NEXT:    vpackuswb %xmm0, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_mul_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_mul_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmullw {{.*}}(%rip), %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_and_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpand %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpand %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpand %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpand %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpandq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpandq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_and_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpand %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpandd %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    pand %xmm4, %xmm2
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm3, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_and_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vandps %ymm1, %ymm0, %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_and_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpand %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_and_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpand %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_and_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_and_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_and_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    pand {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_and_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_and_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpand {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_and_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_xor_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpxor %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpxor %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpxor %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpxor %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpxorq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vpxorq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_xor_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpxor %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpxor %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpxord %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_xor_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vxorps %ymm1, %ymm0, %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_xor_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpxor %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_xor_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpxor %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_xor_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_xor_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_xor_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    pxor {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_xor_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_xor_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpxor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_xor_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_or_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vpor %ymm5, %ymm1, %ymm1
 ; AVX2-FAST-NEXT:    vpor %ymm4, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpor %ymm7, %ymm3, %ymm3
 ; AVX2-FAST-NEXT:    vpor %ymm6, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vporq %zmm3, %zmm1, %zmm1
 ; AVX512-NEXT:    vporq %zmm2, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0

 ;
 ; AVX2-LABEL: trunc_or_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpor %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpor %ymm3, %ymm1, %ymm1
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpord %zmm1, %zmm0, %zmm0
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vzeroupper

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_or_v16i16_v16i8:
 ; AVX1:       # %bb.0:
 ; AVX1-NEXT:    vorps %ymm1, %ymm0, %ymm0
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_or_v16i16_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vpor %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_or_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpor %ymm1, %ymm0, %ymm0
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm2 = ymm2[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm3 = ymm3[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm3 = ymm3[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm2, %xmm2
+; AVX2-SLOW-NEXT:    vmovdqa {{.*#+}} xmm4 = [255,255,255,255,255,255,255,255]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm2, %xmm2
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm0 = ymm0[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vpshufd {{.*#+}} ymm1 = ymm1[0,2,2,3,4,6,6,7]
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
 ; AVX2-SLOW-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-SLOW-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-SLOW-NEXT:    vpshufb %xmm4, %xmm0, %xmm0
-; AVX2-SLOW-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-SLOW-NEXT:    vpand %xmm4, %xmm0, %xmm0
+; AVX2-SLOW-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-SLOW-NEXT:    vzeroupper
 ; AVX2-SLOW-NEXT:    retq
 ;
 ; AVX2-FAST-LABEL: trunc_or_const_v16i64_v16i8:
 ; AVX2-FAST:       # %bb.0:
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm4 = [0,2,4,6,4,6,6,7]
 ; AVX2-FAST-NEXT:    vpermd %ymm2, %ymm4, %ymm2
 ; AVX2-FAST-NEXT:    vpermd %ymm3, %ymm4, %ymm3
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} ymm3 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm2, %ymm2
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm2 = ymm2[0,2,2,3]
-; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm2, %xmm2
+; AVX2-FAST-NEXT:    vmovdqa {{.*#+}} xmm5 = [255,255,255,255,255,255,255,255]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm2, %xmm2
 ; AVX2-FAST-NEXT:    vpermd %ymm0, %ymm4, %ymm0
 ; AVX2-FAST-NEXT:    vpermd %ymm1, %ymm4, %ymm1
 ; AVX2-FAST-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpshufb %ymm3, %ymm0, %ymm0
 ; AVX2-FAST-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-FAST-NEXT:    vpshufb %xmm5, %xmm0, %xmm0
-; AVX2-FAST-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-FAST-NEXT:    vpand %xmm5, %xmm0, %xmm0
+; AVX2-FAST-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-FAST-NEXT:    vzeroupper
 ; AVX2-FAST-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_const_v16i64_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovqd %zmm0, %ymm0
 ; AVX512-NEXT:    vpmovqd %zmm1, %ymm1

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_or_const_v16i32_v16i8:
 ; AVX2:       # %bb.0:
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc_or_const_v16i32_v16i8:
 ; AVX512:       # %bb.0:
 ; AVX512-NEXT:    vpmovdb %zmm0, %xmm0
 ; AVX512-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0

 ; SSE-NEXT:    pand %xmm2, %xmm1
 ; SSE-NEXT:    pand %xmm2, %xmm0
 ; SSE-NEXT:    packuswb %xmm1, %xmm0
 ; SSE-NEXT:    por {{.*}}(%rip), %xmm0
 ; SSE-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc_or_const_v16i16_v16i8:
 ; AVX1:       # %bb.0:
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc_or_const_v16i16_v16i8:
 ; AVX2:       # %bb.0:
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vpor {{.*}}(%rip), %xmm0, %xmm0
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc_or_const_v16i16_v16i8:
 ; AVX512F:       # %bb.0:
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, %xmm0

test/CodeGen/X86/vector-trunc-widen.ll

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc16i32_16i8:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc16i32_16i8:
 ; AVX512:       # %bb.0: # %entry
 ; AVX512-NEXT:    vpmovdb %zmm0, (%rax)
 ; AVX512-NEXT:    vzeroupper

 ; SSE41-NEXT:    pshufb %xmm2, %xmm1
 ; SSE41-NEXT:    pshufb %xmm2, %xmm0
 ; SSE41-NEXT:    punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc16i16_16i8:
 ; AVX1:       # %bb.0: # %entry
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc16i16_16i8:
 ; AVX2:       # %bb.0: # %entry
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc16i16_16i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, (%rax)

 ; SSE41-NEXT:    pshufb %xmm4, %xmm2
 ; SSE41-NEXT:    punpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
 ; SSE41-NEXT:    movdqu %xmm2, (%rax)
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc32i16_32i8:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX1-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
+; AVX1-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
+; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
-; AVX1-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX1-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX1-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
 ; AVX1-NEXT:    vmovups %ymm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc32i16_32i8:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
+; AVX2-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
-; AVX2-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vmovdqu %ymm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc32i16_32i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero

test/CodeGen/X86/vector-trunc.ll

 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc16i32_16i8:
 ; AVX2:       # %bb.0: # %entry
 ; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [0,1,4,5,8,9,12,13,8,9,12,13,12,13,14,15,16,17,20,21,24,25,28,29,24,25,28,29,28,29,30,31]
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm1, %ymm1
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm1 = ymm1[0,2,2,3]
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = [255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %xmm3, %xmm1, %xmm1
 ; AVX2-NEXT:    vpshufb %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,2,3]
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpand %xmm3, %xmm0, %xmm0
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512-LABEL: trunc16i32_16i8:
 ; AVX512:       # %bb.0: # %entry
 ; AVX512-NEXT:    vpmovdb %zmm0, (%rax)
 ; AVX512-NEXT:    vzeroupper

 ; SSE41-NEXT:    pshufb %xmm2, %xmm1
 ; SSE41-NEXT:    pshufb %xmm2, %xmm0
 ; SSE41-NEXT:    punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc16i16_16i8:
 ; AVX1:       # %bb.0: # %entry
+; AVX1-NEXT:    vandps {{.*}}(%rip), %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm1
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX1-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX1-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX1-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc16i16_16i8:
 ; AVX2:       # %bb.0: # %entry
+; AVX2-NEXT:    vpand {{.*}}(%rip), %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm2 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm2, %xmm1, %xmm1
-; AVX2-NEXT:    vpshufb %xmm2, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX2-NEXT:    vpackuswb %xmm1, %xmm0, %xmm0
 ; AVX2-NEXT:    vmovdqu %xmm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc16i16_16i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero
 ; AVX512F-NEXT:    vpmovdb %zmm0, (%rax)

 ; SSE41-NEXT:    pshufb %xmm4, %xmm2
 ; SSE41-NEXT:    punpcklqdq {{.*#+}} xmm2 = xmm2[0],xmm3[0]
 ; SSE41-NEXT:    movdqu %xmm2, (%rax)
 ; SSE41-NEXT:    movdqu %xmm0, (%rax)
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: trunc32i16_32i8:
 ; AVX1:       # %bb.0: # %entry
-; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm2
-; AVX1-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX1-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX1-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX1-NEXT:    vandps %ymm2, %ymm1, %ymm1
+; AVX1-NEXT:    vextractf128 $1, %ymm1, %xmm3
+; AVX1-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
+; AVX1-NEXT:    vandps %ymm2, %ymm0, %ymm0
 ; AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm2
-; AVX1-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX1-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX1-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX1-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX1-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
 ; AVX1-NEXT:    vmovups %ymm0, (%rax)
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq
 ;
 ; AVX2-LABEL: trunc32i16_32i8:
 ; AVX2:       # %bb.0: # %entry
-; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm2
-; AVX2-NEXT:    vmovdqa {{.*#+}} xmm3 = <0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u>
-; AVX2-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm3, %xmm1, %xmm1
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; AVX2-NEXT:    vmovdqa {{.*#+}} ymm2 = [255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255]
+; AVX2-NEXT:    vpand %ymm2, %ymm1, %ymm1
+; AVX2-NEXT:    vextracti128 $1, %ymm1, %xmm3
+; AVX2-NEXT:    vpackuswb %xmm3, %xmm1, %xmm1
+; AVX2-NEXT:    vpand %ymm2, %ymm0, %ymm0
 ; AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm2
-; AVX2-NEXT:    vpshufb %xmm3, %xmm2, %xmm2
-; AVX2-NEXT:    vpshufb %xmm3, %xmm0, %xmm0
-; AVX2-NEXT:    vpunpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; AVX2-NEXT:    vpackuswb %xmm2, %xmm0, %xmm0
 ; AVX2-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
 ; AVX2-NEXT:    vmovdqu %ymm0, (%rax)
 ; AVX2-NEXT:    vzeroupper
 ; AVX2-NEXT:    retq
 ;
 ; AVX512F-LABEL: trunc32i16_32i8:
 ; AVX512F:       # %bb.0: # %entry
 ; AVX512F-NEXT:    vpmovzxwd {{.*#+}} zmm0 = ymm0[0],zero,ymm0[1],zero,ymm0[2],zero,ymm0[3],zero,ymm0[4],zero,ymm0[5],zero,ymm0[6],zero,ymm0[7],zero,ymm0[8],zero,ymm0[9],zero,ymm0[10],zero,ymm0[11],zero,ymm0[12],zero,ymm0[13],zero,ymm0[14],zero,ymm0[15],zero