[AVX512] Don't mark EXTLOAD as legal with AVX512. Continue using custom lowering.

[craig.topper]

Summary

This was impeding our ability to combine the extending shuffles with other shuffles as you can see from the test changes.

There's one special case that needed to be added to use VZEXT directly for v8i8->v8i64 since the custom lowering requires v64i8.

[RKSimon]

test/CodeGen/X86/avx2-vbroadcast.ll

260–261

How come this managed to fold the load but AVX2 didn't?

[craig.topper]

Rebase after fixing broadcast_mem_v4i16_v16i16 for AVX2.

[RKSimon]

test/CodeGen/X86/vec_int_to_fp.ll

2635–2636

Missing fold?

2635–2636

Missing fold?

2961

Missing fold?

2974

Missing fold?

[craig.topper]

Rebase after fixing some of the folding problems.

[delena]

lib/Target/X86/X86ISelLowering.cpp

18427

Do we have a test for this case?

test/CodeGen/X86/avx512-shuffles/broadcast-vector-int.ll

353–356

I'm not sure that masked instruction is the best solution. May be converting it to a shuffle will give better results. Can this sequence be resolved with "pinsertd"? you are loading two elements, but using only one of them, right?

367–370

load {a0, a1}
%shuf = { a0, a1, a0, a1}
%res = { a0, 0, 0, 0, 0}

• can we do the same with one "vmovd" instruction ?

[craig.topper]

lib/Target/X86/X86ISelLowering.cpp

18427

Yes there were test cases that failed without this. I don't remember specifically which ones.

test/CodeGen/X86/avx2-vbroadcast.ll

257

Looks like there's still a folding problem here

[craig.topper]

test/CodeGen/X86/avx512-shuffles/broadcast-vector-int.ll

367–370

This test is trying to test broadcasts, the fact the test was using a constant mask is a test problem which I've fixed in r315848

[craig.topper]

Rebase after fixing the constant select conditions and other recent improvements.

lib/Target/X86/X86ISelLowering.cpp

if (!Subtarget.useSoftFloat() && Subtarget.hasAVX512()) {
 
     addRegisterClass(MVT::v1i1,   &X86::VK1RegClass);
     addRegisterClass(MVT::v8i1,   &X86::VK8RegClass);
     addRegisterClass(MVT::v16i1,  &X86::VK16RegClass);
 
     for (MVT VT : MVT::fp_vector_valuetypes())
       setLoadExtAction(ISD::EXTLOAD, VT, MVT::v8f32, Legal);
 
-    for (auto ExtType : {ISD::ZEXTLOAD, ISD::SEXTLOAD, ISD::EXTLOAD}) {
+    for (auto ExtType : {ISD::ZEXTLOAD, ISD::SEXTLOAD}) {
       setLoadExtAction(ExtType, MVT::v16i32, MVT::v16i8,  Legal);
       setLoadExtAction(ExtType, MVT::v16i32, MVT::v16i16, Legal);
       setLoadExtAction(ExtType, MVT::v8i64,  MVT::v8i8,   Legal);
       setLoadExtAction(ExtType, MVT::v8i64,  MVT::v8i16,  Legal);
       setLoadExtAction(ExtType, MVT::v8i64,  MVT::v8i32,  Legal);
     }
 
     for (MVT VT : {MVT::v2i64, MVT::v4i32, MVT::v8i32, MVT::v4i64, MVT::v8i16,
if (Subtarget.hasVLX()) {
       setOperationAction(ISD::FP_TO_UINT,       MVT::v8i32, Legal);
       setOperationAction(ISD::SINT_TO_FP,       MVT::v4i32, Legal);
       setOperationAction(ISD::FP_TO_SINT,       MVT::v4i32, Legal);
       setOperationAction(ISD::FP_TO_UINT,       MVT::v4i32, Legal);
       setOperationAction(ISD::ZERO_EXTEND,      MVT::v4i32, Custom);
       setOperationAction(ISD::ZERO_EXTEND,      MVT::v2i64, Custom);
       setOperationAction(ISD::SIGN_EXTEND,      MVT::v4i32, Custom);
       setOperationAction(ISD::SIGN_EXTEND,      MVT::v2i64, Custom);
-
-      // FIXME. This commands are available on SSE/AVX2, add relevant patterns.
-      setLoadExtAction(ISD::EXTLOAD, MVT::v8i32, MVT::v8i8,  Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v8i32, MVT::v8i16, Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v4i32, MVT::v4i8,  Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v4i32, MVT::v4i16, Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v4i64, MVT::v4i8,  Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v4i64, MVT::v4i16, Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v4i64, MVT::v4i32, Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v2i64, MVT::v2i8,  Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v2i64, MVT::v2i16, Legal);
-      setLoadExtAction(ISD::EXTLOAD, MVT::v2i64, MVT::v2i32, Legal);
     }
 
     setOperationAction(ISD::TRUNCATE,           MVT::v8i32, Custom);
     setOperationAction(ISD::TRUNCATE,           MVT::v16i16, Custom);
     setOperationAction(ISD::ZERO_EXTEND,        MVT::v16i32, Custom);
     setOperationAction(ISD::ZERO_EXTEND,        MVT::v8i64, Custom);
     setOperationAction(ISD::ANY_EXTEND,         MVT::v16i32, Custom);
     setOperationAction(ISD::ANY_EXTEND,         MVT::v8i64, Custom);
for (auto VT : { MVT::v64i8, MVT::v32i16 }) {
       setOperationAction(ISD::SMIN,         VT, Legal);
       setOperationAction(ISD::UMIN,         VT, Legal);
 
       setOperationPromotedToType(ISD::AND,  VT, MVT::v8i64);
       setOperationPromotedToType(ISD::OR,   VT, MVT::v8i64);
       setOperationPromotedToType(ISD::XOR,  VT, MVT::v8i64);
     }
 
-    for (auto ExtType : {ISD::ZEXTLOAD, ISD::SEXTLOAD, ISD::EXTLOAD}) {
+    for (auto ExtType : {ISD::ZEXTLOAD, ISD::SEXTLOAD}) {
       setLoadExtAction(ExtType, MVT::v32i16, MVT::v32i8, Legal);
-      if (Subtarget.hasVLX()) {
-        // FIXME. This commands are available on SSE/AVX2, add relevant patterns.
-        setLoadExtAction(ExtType, MVT::v16i16, MVT::v16i8, Legal);
-        setLoadExtAction(ExtType, MVT::v8i16,  MVT::v8i8,  Legal);
-      }
     }
   }
 
   if (!Subtarget.useSoftFloat() && Subtarget.hasVLX()) {
     addRegisterClass(MVT::v4i1,   &X86::VK4RegClass);
     addRegisterClass(MVT::v2i1,   &X86::VK2RegClass);
 
     for (auto VT : { MVT::v2i1, MVT::v4i1 }) {
static SDValue LowerExtendedLoad(SDValue Op, const X86Subtarget &Subtarget,
 
   assert((Ext != ISD::SEXTLOAD || NumLoads == 1) &&
          "Can only lower sext loads with a single scalar load!");
 
   unsigned loadRegZize = RegSz;
   if (Ext == ISD::SEXTLOAD && RegSz >= 256)
     loadRegZize = 128;
 
+  // If we don't have BWI we won't be able to create the shuffle needed for
+  // v8i8->v8i64.
+  if (Ext == ISD::EXTLOAD && !Subtarget.hasBWI() && RegVT == MVT::v8i64 &&
+      MemVT == MVT::v8i8)
+    loadRegZize = 128;
+
   // Represent our vector as a sequence of elements which are the
   // largest scalar that we can load.
   EVT LoadUnitVecVT = EVT::getVectorVT(
       *DAG.getContext(), SclrLoadTy, loadRegZize / SclrLoadTy.getSizeInBits());
 
   // Represent the data using the same element type that is stored in
   // memory. In practice, we ''widen'' MemVT.
   EVT WideVecVT =
if (Ext == ISD::SEXTLOAD) {
     assert(TLI.isOperationLegalOrCustom(ISD::SIGN_EXTEND_VECTOR_INREG, RegVT) &&
            "We can't implement a sext load without SIGN_EXTEND_VECTOR_INREG!");
 
     SDValue Shuff = DAG.getSignExtendVectorInReg(SlicedVec, dl, RegVT);
     DAG.ReplaceAllUsesOfValueWith(SDValue(Ld, 1), TF);
     return Shuff;
   }
 
+  if (Ext == ISD::EXTLOAD && !Subtarget.hasBWI() && RegVT == MVT::v8i64 &&
+      MemVT == MVT::v8i8) {
+    SDValue Sext = getExtendInVec(X86ISD::VZEXT, dl, RegVT, SlicedVec, DAG);
+    DAG.ReplaceAllUsesOfValueWith(SDValue(Ld, 1), TF);
+    return Sext;
+  }
+
   // Redistribute the loaded elements into the different locations.
   SmallVector<int, 16> ShuffleVec(NumElems * SizeRatio, -1);
   for (unsigned i = 0; i != NumElems; ++i)
     ShuffleVec[i * SizeRatio] = i;
 
   SDValue Shuff = DAG.getVectorShuffle(WideVecVT, dl, SlicedVec,
                                        DAG.getUNDEF(WideVecVT), ShuffleVec);
 

lib/Target/X86/X86InstrAVX512.td

 
 defm VPMOVSXBW: avx512_extend_BW<0x20, "vpmovsxbw", X86vsext, sext_invec, "s">;
 defm VPMOVSXBD: avx512_extend_BD<0x21, "vpmovsxbd", X86vsext, sext_invec, "s">;
 defm VPMOVSXBQ: avx512_extend_BQ<0x22, "vpmovsxbq", X86vsext, sext_invec, "s">;
 defm VPMOVSXWD: avx512_extend_WD<0x23, "vpmovsxwd", X86vsext, sext_invec, "s">;
 defm VPMOVSXWQ: avx512_extend_WQ<0x24, "vpmovsxwq", X86vsext, sext_invec, "s">;
 defm VPMOVSXDQ: avx512_extend_DQ<0x25, "vpmovsxdq", X86vsext, sext_invec, "s">;
 
-// EXTLOAD patterns, implemented using vpmovz
-multiclass avx512_ext_lowering<string InstrStr, X86VectorVTInfo To,
-                               X86VectorVTInfo From, PatFrag LdFrag> {
-  def : Pat<(To.VT (LdFrag addr:$src)),
-            (!cast<Instruction>("VPMOVZX"#InstrStr#"rm") addr:$src)>;
-  def : Pat<(To.VT (vselect To.KRCWM:$mask, (LdFrag addr:$src), To.RC:$src0)),
-            (!cast<Instruction>("VPMOVZX"#InstrStr#"rmk") To.RC:$src0,
-             To.KRC:$mask, addr:$src)>;
-  def : Pat<(To.VT (vselect To.KRCWM:$mask, (LdFrag addr:$src),
-                    To.ImmAllZerosV)),
-            (!cast<Instruction>("VPMOVZX"#InstrStr#"rmkz") To.KRC:$mask,
-             addr:$src)>;
-}
-
-let Predicates = [HasVLX, HasBWI] in {
-  defm : avx512_ext_lowering<"BWZ128", v8i16x_info,  v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"BWZ256", v16i16x_info, v16i8x_info,  extloadvi8>;
-}
-let Predicates = [HasBWI] in {
-  defm : avx512_ext_lowering<"BWZ",    v32i16_info,  v32i8x_info,  extloadvi8>;
-}
-let Predicates = [HasVLX, HasAVX512] in {
-  defm : avx512_ext_lowering<"BDZ128", v4i32x_info,  v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"BDZ256", v8i32x_info,  v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"BQZ128", v2i64x_info,  v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"BQZ256", v4i64x_info,  v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"WDZ128", v4i32x_info,  v8i16x_info,  extloadvi16>;
-  defm : avx512_ext_lowering<"WDZ256", v8i32x_info,  v8i16x_info,  extloadvi16>;
-  defm : avx512_ext_lowering<"WQZ128", v2i64x_info,  v8i16x_info,  extloadvi16>;
-  defm : avx512_ext_lowering<"WQZ256", v4i64x_info,  v8i16x_info,  extloadvi16>;
-  defm : avx512_ext_lowering<"DQZ128", v2i64x_info,  v4i32x_info,  extloadvi32>;
-  defm : avx512_ext_lowering<"DQZ256", v4i64x_info,  v4i32x_info,  extloadvi32>;
-}
-let Predicates = [HasAVX512] in {
-  defm : avx512_ext_lowering<"BDZ",    v16i32_info,  v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"BQZ",    v8i64_info,   v16i8x_info,  extloadvi8>;
-  defm : avx512_ext_lowering<"WDZ",    v16i32_info,  v16i16x_info, extloadvi16>;
-  defm : avx512_ext_lowering<"WQZ",    v8i64_info,   v8i16x_info,  extloadvi16>;
-  defm : avx512_ext_lowering<"DQZ",    v8i64_info,   v8i32x_info,  extloadvi32>;
-}
 
 multiclass AVX512_pmovx_patterns<string OpcPrefix, SDNode ExtOp,
                                  SDNode InVecOp, PatFrag ExtLoad16> {
   // 128-bit patterns
   let Predicates = [HasVLX, HasBWI] in {
   def : Pat<(v8i16 (InVecOp (bc_v16i8 (v2i64 (scalar_to_vector (loadi64 addr:$src)))))),
             (!cast<I>(OpcPrefix#BWZ128rm) addr:$src)>;
   def : Pat<(v8i16 (InVecOp (bc_v16i8 (v2f64 (scalar_to_vector (loadf64 addr:$src)))))),

test/CodeGen/X86/avx2-vbroadcast.ll

entry:
   %q0 = insertelement <4 x i64> undef, i64 %q, i32 0
   %q1 = insertelement <4 x i64> %q0, i64 %q, i32 1
   %q2 = insertelement <4 x i64> %q1, i64 %q, i32 2
   %q3 = insertelement <4 x i64> %q2, i64 %q, i32 3
   ret <4 x i64> %q3
 }
 
 define <8 x i16> @broadcast_mem_v4i16_v8i16(<4 x i16>* %ptr) {
-; X32-AVX2-LABEL: broadcast_mem_v4i16_v8i16:
-; X32-AVX2:       ## BB#0:
-; X32-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X32-AVX2-NEXT:    vmovddup {{.*#+}} xmm0 = mem[0,0]
-; X32-AVX2-NEXT:    retl
-;
-; X64-AVX2-LABEL: broadcast_mem_v4i16_v8i16:
-; X64-AVX2:       ## BB#0:
-; X64-AVX2-NEXT:    vpbroadcastq (%rdi), %xmm0
-; X64-AVX2-NEXT:    retq
-;
-; X32-AVX512VL-LABEL: broadcast_mem_v4i16_v8i16:
-; X32-AVX512VL:       ## BB#0:
-; X32-AVX512VL-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X32-AVX512VL-NEXT:    vpmovzxwd {{.*#+}} xmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero
-; X32-AVX512VL-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,0,1,4,5,8,9,12,13]
-; X32-AVX512VL-NEXT:    retl
+; X32-LABEL: broadcast_mem_v4i16_v8i16:
+; X32:       ## BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    vmovddup {{.*#+}} xmm0 = mem[0,0]
+; X32-NEXT:    retl
 ;
-; X64-AVX512VL-LABEL: broadcast_mem_v4i16_v8i16:
-; X64-AVX512VL:       ## BB#0:
-; X64-AVX512VL-NEXT:    vpmovzxwd {{.*#+}} xmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero
-; X64-AVX512VL-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,1,4,5,8,9,12,13,0,1,4,5,8,9,12,13]
-; X64-AVX512VL-NEXT:    retq
+; X64-LABEL: broadcast_mem_v4i16_v8i16:
+; X64:       ## BB#0:
+; X64-NEXT:    vpbroadcastq (%rdi), %xmm0
+; X64-NEXT:    retq
   %load = load <4 x i16>, <4 x i16>* %ptr
   %shuf = shufflevector <4 x i16> %load, <4 x i16> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
   ret <8 x i16> %shuf
 }
 
 define <16 x i16> @broadcast_mem_v4i16_v16i16(<4 x i16>* %ptr) {
-; X32-AVX2-LABEL: broadcast_mem_v4i16_v16i16:
-; X32-AVX2:       ## BB#0:
-; X32-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X32-AVX2-NEXT:    vmovsd {{.*#+}} xmm0 = mem[0],zero
-; X32-AVX2-NEXT:    vbroadcastsd %xmm0, %ymm0
-; X32-AVX2-NEXT:    retl
-;
-; X64-AVX2-LABEL: broadcast_mem_v4i16_v16i16:
-; X64-AVX2:       ## BB#0:
-; X64-AVX2-NEXT:    vbroadcastsd (%rdi), %ymm0
-; X64-AVX2-NEXT:    retq
-;
-; X32-AVX512VL-LABEL: broadcast_mem_v4i16_v16i16:
-; X32-AVX512VL:       ## BB#0:
-; X32-AVX512VL-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X32-AVX512VL-NEXT:    vpmovzxwd {{.*#+}} xmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero
-; X32-AVX512VL-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
-; X32-AVX512VL-NEXT:    vpshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,6,7]
-; X32-AVX512VL-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; X32-AVX512VL-NEXT:    vpbroadcastq %xmm0, %ymm0
-; X32-AVX512VL-NEXT:    retl
+; X32-LABEL: broadcast_mem_v4i16_v16i16:
+; X32:       ## BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    vmovsd {{.*#+}} xmm0 = mem[0],zero
+; X32-NEXT:    vbroadcastsd %xmm0, %ymm0
+; X32-NEXT:    retl
 ;
-; X64-AVX512VL-LABEL: broadcast_mem_v4i16_v16i16:
-; X64-AVX512VL:       ## BB#0:
-; X64-AVX512VL-NEXT:    vpmovzxwd {{.*#+}} xmm0 = mem[0],zero,mem[1],zero,mem[2],zero,mem[3],zero
-; X64-AVX512VL-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
-; X64-AVX512VL-NEXT:    vpshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,6,6,7]
-; X64-AVX512VL-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; X64-AVX512VL-NEXT:    vpbroadcastq %xmm0, %ymm0
-; X64-AVX512VL-NEXT:    retq
+; X64-LABEL: broadcast_mem_v4i16_v16i16:
+; X64:       ## BB#0:
+; X64-NEXT:    vbroadcastsd (%rdi), %ymm0
+; X64-NEXT:    retq
   %load = load <4 x i16>, <4 x i16>* %ptr
   %shuf = shufflevector <4 x i16> %load, <4 x i16> undef, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
   ret <16 x i16> %shuf
 }
 
 ; FIXME: Pointer adjusted broadcasts
 
 define <16 x i8> @load_splat_16i8_16i8_1111111111111111(<16 x i8>* %ptr) nounwind uwtable readnone ssp {

test/CodeGen/X86/avx512-shuffles/broadcast-vector-int.ll

; CHECK-NEXT:    retq
   %shuf = shufflevector <16 x i32> %vec, <16 x i32> undef, <16 x i32> <i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <16 x i32> %mask, zeroinitializer
   %res = select <16 x i1> %cmp, <16 x i32> %shuf, <16 x i32> zeroinitializer
   ret <16 x i32> %res
 }
 define <4 x i32> @test_2xi32_to_4xi32_mem(<2 x i32>* %vp) {
 ; CHECK-LABEL: test_2xi32_to_4xi32_mem:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm0 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,0,2]
+; CHECK-NEXT:    vpbroadcastq (%rdi), %xmm0
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %res = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   ret <4 x i32> %res
 }
 define <4 x i32> @test_masked_2xi32_to_4xi32_mem_mask0(<2 x i32>* %vp, <4 x i32> %default, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_2xi32_to_4xi32_mem_mask0:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm2 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm3, %xmm3, %xmm3
-; CHECK-NEXT:    vpcmpeqd %xmm3, %xmm1, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} = xmm2[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm1, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> %default
   ret <4 x i32> %res
 }
 
 define <4 x i32> @test_masked_z_2xi32_to_4xi32_mem_mask0(<2 x i32>* %vp, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_z_2xi32_to_4xi32_mem_mask0:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm1 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm0, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} {z} = xmm1[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; CHECK-NEXT:    vpcmpeqd %xmm1, %xmm0, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} {z} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> zeroinitializer
   ret <4 x i32> %res
 }
 define <4 x i32> @test_masked_2xi32_to_4xi32_mem_mask1(<2 x i32>* %vp, <4 x i32> %default, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_2xi32_to_4xi32_mem_mask1:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm2 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm3, %xmm3, %xmm3
-; CHECK-NEXT:    vpcmpeqd %xmm3, %xmm1, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} = xmm2[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm1, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> %default
   ret <4 x i32> %res
 }
 
 define <4 x i32> @test_masked_z_2xi32_to_4xi32_mem_mask1(<2 x i32>* %vp, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_z_2xi32_to_4xi32_mem_mask1:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm1 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm0, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} {z} = xmm1[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; CHECK-NEXT:    vpcmpeqd %xmm1, %xmm0, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} {z} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> zeroinitializer
   ret <4 x i32> %res
 }
 define <4 x i32> @test_masked_2xi32_to_4xi32_mem_mask2(<2 x i32>* %vp, <4 x i32> %default, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_2xi32_to_4xi32_mem_mask2:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm2 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm3, %xmm3, %xmm3
-; CHECK-NEXT:    vpcmpeqd %xmm3, %xmm1, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} = xmm2[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm1, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> %default
   ret <4 x i32> %res
 }
 
 define <4 x i32> @test_masked_z_2xi32_to_4xi32_mem_mask2(<2 x i32>* %vp, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_z_2xi32_to_4xi32_mem_mask2:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm1 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm0, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} {z} = xmm1[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; CHECK-NEXT:    vpcmpeqd %xmm1, %xmm0, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} {z} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> zeroinitializer
   ret <4 x i32> %res
 }
 define <4 x i32> @test_masked_2xi32_to_4xi32_mem_mask3(<2 x i32>* %vp, <4 x i32> %default, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_2xi32_to_4xi32_mem_mask3:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm2 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm3, %xmm3, %xmm3
-; CHECK-NEXT:    vpcmpeqd %xmm3, %xmm1, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} = xmm2[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
+; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm1, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> %default
   ret <4 x i32> %res
 }
 
 define <4 x i32> @test_masked_z_2xi32_to_4xi32_mem_mask3(<2 x i32>* %vp, <4 x i32> %mask) {
 ; CHECK-LABEL: test_masked_z_2xi32_to_4xi32_mem_mask3:
 ; CHECK:       # BB#0:
-; CHECK-NEXT:    vpmovzxdq {{.*#+}} xmm1 = mem[0],zero,mem[1],zero
-; CHECK-NEXT:    vpxor %xmm2, %xmm2, %xmm2
-; CHECK-NEXT:    vpcmpeqd %xmm2, %xmm0, %k1
-; CHECK-NEXT:    vpshufd {{.*#+}} xmm0 {%k1} {z} = xmm1[0,2,0,2]
+; CHECK-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; CHECK-NEXT:    vpcmpeqd %xmm1, %xmm0, %k1
+; CHECK-NEXT:    vbroadcasti32x2 {{.*#+}} xmm0 {%k1} {z} = mem[0,1,0,1]
 ; CHECK-NEXT:    retq
   %vec = load <2 x i32>, <2 x i32>* %vp
   %shuf = shufflevector <2 x i32> %vec, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1>
   %cmp = icmp eq <4 x i32> %mask, zeroinitializer
   %res = select <4 x i1> %cmp, <4 x i32> %shuf, <4 x i32> zeroinitializer
   ret <4 x i32> %res
 }
 define <8 x i32> @test_2xi32_to_8xi32_mem(<2 x i32>* %vp) {

test/CodeGen/X86/vec_int_to_fp.ll

; AVX512VLDQ-NEXT:    retq
   ret <2 x double> %cvt
 }
 
 define <2 x double> @sitofp_load_2i32_to_2f64(<2 x i32> *%a) {
 ; SSE-LABEL: sitofp_load_2i32_to_2f64:
 ; SSE:       # BB#0:
 ; SSE-NEXT:    cvtdq2pd (%rdi), %xmm0
 ; SSE-NEXT:    retq
 ;
-; VEX-LABEL: sitofp_load_2i32_to_2f64:
-; VEX:       # BB#0:
-; VEX-NEXT:    vcvtdq2pd (%rdi), %xmm0
-; VEX-NEXT:    retq
-;
-; AVX512F-LABEL: sitofp_load_2i32_to_2f64:
-; AVX512F:       # BB#0:
-; AVX512F-NEXT:    vcvtdq2pd (%rdi), %xmm0
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: sitofp_load_2i32_to_2f64:
-; AVX512VL:       # BB#0:
-; AVX512VL-NEXT:    vpmovzxdq {{.*#+}} xmm0 = mem[0],zero,mem[1],zero
-; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; AVX512VL-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; AVX512VL-NEXT:    retq
-;
-; AVX512DQ-LABEL: sitofp_load_2i32_to_2f64:
-; AVX512DQ:       # BB#0:
-; AVX512DQ-NEXT:    vcvtdq2pd (%rdi), %xmm0
-; AVX512DQ-NEXT:    retq
-;
-; AVX512VLDQ-LABEL: sitofp_load_2i32_to_2f64:
-; AVX512VLDQ:       # BB#0:
-; AVX512VLDQ-NEXT:    vpmovzxdq {{.*#+}} xmm0 = mem[0],zero,mem[1],zero
-; AVX512VLDQ-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; AVX512VLDQ-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; AVX512VLDQ-NEXT:    retq
+; AVX-LABEL: sitofp_load_2i32_to_2f64:
+; AVX:       # BB#0:
+; AVX-NEXT:    vcvtdq2pd (%rdi), %xmm0
+; AVX-NEXT:    retq
   %ld = load <2 x i32>, <2 x i32> *%a
   %cvt = sitofp <2 x i32> %ld to <2 x double>
   ret <2 x double> %cvt
 }
 
 define <2 x double> @sitofp_load_2i16_to_2f64(<2 x i16> *%a) {
 ; SSE-LABEL: sitofp_load_2i16_to_2f64:
 ; SSE:       # BB#0:

 ; AVX512F-NEXT:    vmovsd {{.*#+}} xmm0 = mem[0],zero
 ; AVX512F-NEXT:    vcvtudq2pd %ymm0, %zmm0
 ; AVX512F-NEXT:    # kill: %XMM0<def> %XMM0<kill> %ZMM0<kill>
 ; AVX512F-NEXT:    vzeroupper
 ; AVX512F-NEXT:    retq
 ;
 ; AVX512VL-LABEL: uitofp_load_2i32_to_2f64:
 ; AVX512VL:       # BB#0:
-; AVX512VL-NEXT:    vpmovzxdq {{.*#+}} xmm0 = mem[0],zero,mem[1],zero
-; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; AVX512VL-NEXT:    vcvtudq2pd %xmm0, %xmm0
+; AVX512VL-NEXT:    vcvtudq2pd (%rdi), %xmm0
 ; AVX512VL-NEXT:    retq
 ;
 ; AVX512DQ-LABEL: uitofp_load_2i32_to_2f64:
 ; AVX512DQ:       # BB#0:
 ; AVX512DQ-NEXT:    vmovsd {{.*#+}} xmm0 = mem[0],zero
 ; AVX512DQ-NEXT:    vcvtudq2pd %ymm0, %zmm0
 ; AVX512DQ-NEXT:    # kill: %XMM0<def> %XMM0<kill> %ZMM0<kill>
 ; AVX512DQ-NEXT:    vzeroupper
 ; AVX512DQ-NEXT:    retq
 ;
 ; AVX512VLDQ-LABEL: uitofp_load_2i32_to_2f64:
 ; AVX512VLDQ:       # BB#0:
-; AVX512VLDQ-NEXT:    vpmovzxdq {{.*#+}} xmm0 = mem[0],zero,mem[1],zero
-; AVX512VLDQ-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; AVX512VLDQ-NEXT:    vcvtudq2pd %xmm0, %xmm0
+; AVX512VLDQ-NEXT:    vcvtudq2pd (%rdi), %xmm0
 ; AVX512VLDQ-NEXT:    retq
   %ld = load <2 x i32>, <2 x i32> *%a
   %cvt = uitofp <2 x i32> %ld to <2 x double>
   ret <2 x double> %cvt
 }
 
 define <2 x double> @uitofp_load_2i16_to_2f64(<2 x i16> *%a) {
 ; SSE-LABEL: uitofp_load_2i16_to_2f64:
 ; SSE:       # BB#0:
 ; SSE-NEXT:    movd {{.*#+}} xmm0 = mem[0],zero,zero,zero
 ; SSE-NEXT:    pxor %xmm1, %xmm1
 ; SSE-NEXT:    punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1],xmm0[2],xmm1[2],xmm0[3],xmm1[3]
 ; SSE-NEXT:    cvtdq2pd %xmm0, %xmm0
 ; SSE-NEXT:    retq
 ;
-; VEX-LABEL: uitofp_load_2i16_to_2f64:
-; VEX:       # BB#0:
-; VEX-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
-; VEX-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
-; VEX-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; VEX-NEXT:    retq
-;
-; AVX512F-LABEL: uitofp_load_2i16_to_2f64:
-; AVX512F:       # BB#0:
-; AVX512F-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
-; AVX512F-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
-; AVX512F-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; AVX512F-NEXT:    retq
-;
-; AVX512VL-LABEL: uitofp_load_2i16_to_2f64:
-; AVX512VL:       # BB#0:
-; AVX512VL-NEXT:    vpmovzxwq {{.*#+}} xmm0 = mem[0],zero,zero,zero,mem[1],zero,zero,zero
-; AVX512VL-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; AVX512VL-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
-; AVX512VL-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
-; AVX512VL-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; AVX512VL-NEXT:    retq
-;
-; AVX512DQ-LABEL: uitofp_load_2i16_to_2f64:
-; AVX512DQ:       # BB#0:
-; AVX512DQ-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
-; AVX512DQ-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
-; AVX512DQ-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; AVX512DQ-NEXT:    retq
-;
-; AVX512VLDQ-LABEL: uitofp_load_2i16_to_2f64:
-; AVX512VLDQ:       # BB#0:
-; AVX512VLDQ-NEXT:    vpmovzxwq {{.*#+}} xmm0 = mem[0],zero,zero,zero,mem[1],zero,zero,zero
-; AVX512VLDQ-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
-; AVX512VLDQ-NEXT:    vpshuflw {{.*#+}} xmm0 = xmm0[0,2,2,3,4,5,6,7]
-; AVX512VLDQ-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
-; AVX512VLDQ-NEXT:    vcvtdq2pd %xmm0, %xmm0
-; AVX512VLDQ-NEXT:    retq
+; AVX-LABEL: uitofp_load_2i16_to_2f64:
+; AVX:       # BB#0:
+; AVX-NEXT:    vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX-NEXT:    vpmovzxwd {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
+; AVX-NEXT:    vcvtdq2pd %xmm0, %xmm0
+; AVX-NEXT:    retq
   %ld = load <2 x i16>, <2 x i16> *%a
   %cvt = uitofp <2 x i16> %ld to <2 x double>
   ret <2 x double> %cvt
 }
 
 define <2 x double> @uitofp_load_2i8_to_2f64(<2 x i8> *%a) {
 ; SSE-LABEL: uitofp_load_2i8_to_2f64:
 ; SSE:       # BB#0:

test/CodeGen/X86/vector-shuffle-128-v4.ll

 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: insert_mem_lo_v4i32:
 ; AVX1:       # BB#0:
 ; AVX1-NEXT:    vmovq {{.*#+}} xmm1 = mem[0],zero
 ; AVX1-NEXT:    vpblendw {{.*#+}} xmm0 = xmm1[0,1,2,3],xmm0[4,5,6,7]
 ; AVX1-NEXT:    retq
 ;
-; AVX2-LABEL: insert_mem_lo_v4i32:
-; AVX2:       # BB#0:
-; AVX2-NEXT:    vmovsd {{.*#+}} xmm1 = mem[0],zero
-; AVX2-NEXT:    vblendps {{.*#+}} xmm0 = xmm1[0,1],xmm0[2,3]
-; AVX2-NEXT:    retq
-;
-; AVX512VL-LABEL: insert_mem_lo_v4i32:
-; AVX512VL:       # BB#0:
-; AVX512VL-NEXT:    vpmovzxdq {{.*#+}} xmm1 = mem[0],zero,mem[1],zero
-; AVX512VL-NEXT:    vshufps {{.*#+}} xmm0 = xmm1[0,2],xmm0[2,3]
-; AVX512VL-NEXT:    retq
+; AVX2OR512VL-LABEL: insert_mem_lo_v4i32:
+; AVX2OR512VL:       # BB#0:
+; AVX2OR512VL-NEXT:    vmovsd {{.*#+}} xmm1 = mem[0],zero
+; AVX2OR512VL-NEXT:    vblendps {{.*#+}} xmm0 = xmm1[0,1],xmm0[2,3]
+; AVX2OR512VL-NEXT:    retq
   %a = load <2 x i32>, <2 x i32>* %ptr
   %v = shufflevector <2 x i32> %a, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
   %shuffle = shufflevector <4 x i32> %v, <4 x i32> %b, <4 x i32> <i32 0, i32 1, i32 6, i32 7>
   ret <4 x i32> %shuffle
 }
 
 define <4 x i32> @insert_reg_hi_v4i32(i64 %a, <4 x i32> %b) {
 ; SSE-LABEL: insert_reg_hi_v4i32:

 
 define <4 x i32> @insert_mem_hi_v4i32(<2 x i32>* %ptr, <4 x i32> %b) {
 ; SSE-LABEL: insert_mem_hi_v4i32:
 ; SSE:       # BB#0:
 ; SSE-NEXT:    movsd {{.*#+}} xmm1 = mem[0],zero
 ; SSE-NEXT:    movlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
 ; SSE-NEXT:    retq
 ;
-; AVX1OR2-LABEL: insert_mem_hi_v4i32:
-; AVX1OR2:       # BB#0:
-; AVX1OR2-NEXT:    vmovsd {{.*#+}} xmm1 = mem[0],zero
-; AVX1OR2-NEXT:    vmovlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
-; AVX1OR2-NEXT:    retq
-;
-; AVX512VL-LABEL: insert_mem_hi_v4i32:
-; AVX512VL:       # BB#0:
-; AVX512VL-NEXT:    vpmovzxdq {{.*#+}} xmm1 = mem[0],zero,mem[1],zero
-; AVX512VL-NEXT:    vshufps {{.*#+}} xmm0 = xmm0[0,1],xmm1[0,2]
-; AVX512VL-NEXT:    retq
+; AVX-LABEL: insert_mem_hi_v4i32:
+; AVX:       # BB#0:
+; AVX-NEXT:    vmovsd {{.*#+}} xmm1 = mem[0],zero
+; AVX-NEXT:    vmovlhps {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; AVX-NEXT:    retq
   %a = load <2 x i32>, <2 x i32>* %ptr
   %v = shufflevector <2 x i32> %a, <2 x i32> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
   %shuffle = shufflevector <4 x i32> %v, <4 x i32> %b, <4 x i32> <i32 4, i32 5, i32 0, i32 1>
   ret <4 x i32> %shuffle
 }
 
 define <4 x float> @insert_reg_lo_v4f32(double %a, <4 x float> %b) {
 ; SSE2-LABEL: insert_reg_lo_v4f32: