[InstCombine] fold fake vector extract to shift+trunc

[spatel]

Summary

We already handle more complicated cases like:
extelt (bitcast (inselt poison, X, 0)) --> trunc (lshr X)

But we missed this simpler pattern:
https://alive2.llvm.org/ce/z/D55h64 / https://alive2.llvm.org/ce/z/GKzzRq

This is part of solving:
https://llvm.org/PR52057

I made the transform depend on legal/desirable int type to avoid creating a shift of an illegal type (for example i128). I'm not sure if that restriction is actually necessary, but we can change that as a follow-up if the backend can deal with integer ops on too-wide illegal types.

The pile of AVX512 test changes are all neutral AFAICT - the x86 backend seems to know how to turn that into the expected "kmov" instructions.

[dmgreen]

llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

204

Does this need to check for scalable vectors nowadays?

[spatel]

llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

204

The source type must be a scalar integer, so we can't have a scalable vector in this code block, right?
If that's correct, I can add an assert that we have a FixedVectorType.

[spatel]

Patch updated:
Added an assert for FixedVectorType.

[dmgreen]

llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

204

Ah, because it's from a bitcast. Sounds good then.

[lebedev.ri]

LG, thank you.

llvm/lib/Transforms/InstCombine/InstCombineInternal.h

bool willNotOverflow(BinaryOperator::BinaryOps Opcode, const Value *LHS,
     case Instruction::Sub: return willNotOverflowSub(LHS, RHS, CxtI, IsSigned);
     case Instruction::Mul: return willNotOverflowMul(LHS, RHS, CxtI, IsSigned);
     default: llvm_unreachable("Unexpected opcode for overflow query");
     }
   }
 
   Value *EmitGEPOffset(User *GEP);
   Instruction *scalarizePHI(ExtractElementInst &EI, PHINode *PN);
+  Instruction *foldBitcastExtElt(ExtractElementInst &ExtElt);
   Instruction *foldCastedBitwiseLogic(BinaryOperator &I);
   Instruction *narrowBinOp(TruncInst &Trunc);
   Instruction *narrowMaskedBinOp(BinaryOperator &And);
   Instruction *narrowMathIfNoOverflow(BinaryOperator &I);
   Instruction *narrowFunnelShift(TruncInst &Trunc);
   Instruction *optimizeBitCastFromPhi(CastInst &CI, PHINode *PN);
   Instruction *matchSAddSubSat(Instruction &MinMax1);
 

llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp

Instruction *InstCombinerImpl::scalarizePHI(ExtractElementInst &EI,
   }
 
   for (auto E : Extracts)
     replaceInstUsesWith(*E, scalarPHI);
 
   return &EI;
 }
 
-static Instruction *foldBitcastExtElt(ExtractElementInst &Ext,
-                                      InstCombiner::BuilderTy &Builder,
-                                      bool IsBigEndian) {
+Instruction *InstCombinerImpl::foldBitcastExtElt(ExtractElementInst &Ext) {
   Value *X;
   uint64_t ExtIndexC;
   if (!match(Ext.getVectorOperand(), m_BitCast(m_Value(X))) ||
-      !X->getType()->isVectorTy() ||
       !match(Ext.getIndexOperand(), m_ConstantInt(ExtIndexC)))
     return nullptr;
 
+  ElementCount NumElts =
+      cast<VectorType>(Ext.getVectorOperandType())->getElementCount();
+  Type *DestTy = Ext.getType();
+  bool IsBigEndian = DL.isBigEndian();
+
+  // If we are casting an integer to vector and extracting a portion, that is
+  // a shift-right and truncate.
+  // TODO: If no shift is needed, allow extra use?
+  // TODO: Allow FP dest type by casting the trunc to FP?
+  if (X->getType()->isIntegerTy() && DestTy->isIntegerTy() &&
+      isDesirableIntType(X->getType()->getPrimitiveSizeInBits()) &&
+      Ext.getVectorOperand()->hasOneUse()) {
+    assert(isa<FixedVectorType>(Ext.getVectorOperand()->getType()) &&
+           "Expected fixed vector type for bitcast from scalar integer");
+
+    // Big endian requires adjusting the extract index since MSB is at index 0.
+    // LittleEndian: extelt (bitcast i32 X to v4i8), 0 -> trunc i32 X to i8
+    // BigEndian: extelt (bitcast i32 X to v4i8), 0 -> trunc i32 (X >> 24) to i8
+    if (IsBigEndian)
+      ExtIndexC = NumElts.getKnownMinValue() - 1 - ExtIndexC;
+    unsigned ShiftAmountC = ExtIndexC * DestTy->getPrimitiveSizeInBits();
+    Value *Lshr = Builder.CreateLShr(X, ShiftAmountC, "extelt.offset");
+    return new TruncInst(Lshr, DestTy);
+  }
+
+  if (!X->getType()->isVectorTy())
+    return nullptr;
+
   // If this extractelement is using a bitcast from a vector of the same number
   // of elements, see if we can find the source element from the source vector:
   // extelt (bitcast VecX), IndexC --> bitcast X[IndexC]
   auto *SrcTy = cast<VectorType>(X->getType());
-  Type *DestTy = Ext.getType();
   ElementCount NumSrcElts = SrcTy->getElementCount();
-  ElementCount NumElts =
-      cast<VectorType>(Ext.getVectorOperandType())->getElementCount();
   if (NumSrcElts == NumElts)
     if (Value *Elt = findScalarElement(X, ExtIndexC))
       return new BitCastInst(Elt, DestTy);
 
   assert(NumSrcElts.isScalable() == NumElts.isScalable() &&
          "Src and Dst must be the same sort of vector type");
 
   // If the source elements are wider than the destination, try to shift and
if (!EC.isScalable() && NumElts != 1) {
               SrcVec->replaceAllUsesWith(V);
               return &EI;
             }
           }
         }
       }
     }
 
-    if (Instruction *I = foldBitcastExtElt(EI, Builder, DL.isBigEndian()))
+    if (Instruction *I = foldBitcastExtElt(EI))
       return I;
 
     // If there's a vector PHI feeding a scalar use through this extractelement
     // instruction, try to scalarize the PHI.
     if (auto *Phi = dyn_cast<PHINode>(SrcVec))
       if (Instruction *ScalarPHI = scalarizePHI(EI, Phi))
         return ScalarPHI;
   }

llvm/test/Transforms/InstCombine/X86/x86-avx512-inseltpoison.ll

;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_add_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_add_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fadd float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.add.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_add_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_add_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fadd double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.add.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_add_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_add_sd_mask_round(
;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_sub_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_sub_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fsub float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.sub.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_sub_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_sub_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fsub double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.sub.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_sub_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_sub_sd_mask_round(
;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_mul_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mul_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fmul float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.mul.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_mul_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mul_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fmul double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.mul.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_mul_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mul_sd_mask_round(
;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_div_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_div_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fdiv float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.div.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_div_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_div_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fdiv double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.div.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_div_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_div_sd_mask_round(

 declare float @llvm.fma.f32(float, float, float) #1
 
 define <4 x float> @test_mask_vfmadd_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP1]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP1]], float [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %b, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %c, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = extractelement <4 x float> %a, i64 0
   %8 = extractelement <4 x float> %3, i64 0
   %9 = extractelement <4 x float> %6, i64 0
   %10 = call float @llvm.fma.f32(float %7, float %8, float %9)
   %11 = bitcast i8 %mask to <8 x i1>
   %12 = extractelement <8 x i1> %11, i64 0
   %13 = select i1 %12, float %10, float %7
   %14 = insertelement <4 x float> %a, float %13, i64 0
   ret <4 x float> %14
 }
 
 define float @test_mask_vfmadd_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP1]]
-; CHECK-NEXT:    ret float [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP1]], float [[TMP4]]
+; CHECK-NEXT:    ret float [[TMP6]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = extractelement <4 x float> %3, i64 0
   %5 = extractelement <4 x float> %b, i64 0
   %6 = extractelement <4 x float> %c, i64 0
   %7 = call float @llvm.fma.f32(float %4, float %5, float %6)

 declare double @llvm.fma.f64(double, double, double) #1
 
 define <2 x double> @test_mask_vfmadd_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP1]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP1]], double [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %b, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %c, double 2.000000e+00, i32 1
   %3 = extractelement <2 x double> %a, i64 0
   %4 = extractelement <2 x double> %1, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = bitcast i8 %mask to <8 x i1>
   %8 = extractelement <8 x i1> %7, i64 0
   %9 = select i1 %8, double %6, double %3
   %10 = insertelement <2 x double> %a, double %9, i64 0
   ret <2 x double> %10
 }
 
 define double @test_mask_vfmadd_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP1]]
-; CHECK-NEXT:    ret double [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP1]], double [[TMP4]]
+; CHECK-NEXT:    ret double [[TMP6]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = extractelement <2 x double> %1, i64 0
   %3 = extractelement <2 x double> %b, i64 0
   %4 = extractelement <2 x double> %c, i64 0
   %5 = call double @llvm.fma.f64(double %2, double %3, double %4)
   %6 = bitcast i8 %mask to <8 x i1>
   %7 = extractelement <8 x i1> %6, i64 0

 }
 
 define <4 x float> @test_maskz_vfmadd_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float 0.000000e+00
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float 0.000000e+00, float [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %b, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %c, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = extractelement <4 x float> %a, i64 0
   %8 = extractelement <4 x float> %3, i64 0
   %9 = extractelement <4 x float> %6, i64 0
   %10 = call float @llvm.fma.f32(float %7, float %8, float %9)
   %11 = bitcast i8 %mask to <8 x i1>
   %12 = extractelement <8 x i1> %11, i64 0
   %13 = select i1 %12, float %10, float 0.000000e+00
   %14 = insertelement <4 x float> %a, float %13, i64 0
   ret <4 x float> %14
 }
 
 define float @test_maskz_vfmadd_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float 0.000000e+00
-; CHECK-NEXT:    ret float [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float 0.000000e+00, float [[TMP4]]
+; CHECK-NEXT:    ret float [[TMP6]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = extractelement <4 x float> %3, i64 0
   %5 = extractelement <4 x float> %b, i64 0
   %6 = extractelement <4 x float> %c, i64 0
   %7 = call float @llvm.fma.f32(float %4, float %5, float %6)

 }
 
 define <2 x double> @test_maskz_vfmadd_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double 0.000000e+00
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double 0.000000e+00, double [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %b, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %c, double 2.000000e+00, i32 1
   %3 = extractelement <2 x double> %a, i64 0
   %4 = extractelement <2 x double> %1, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = bitcast i8 %mask to <8 x i1>
   %8 = extractelement <8 x i1> %7, i64 0
   %9 = select i1 %8, double %6, double 0.000000e+00
   %10 = insertelement <2 x double> %a, double %9, i64 0
   ret <2 x double> %10
 }
 
 define double @test_maskz_vfmadd_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double 0.000000e+00
-; CHECK-NEXT:    ret double [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double 0.000000e+00, double [[TMP4]]
+; CHECK-NEXT:    ret double [[TMP6]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = extractelement <2 x double> %1, i64 0
   %3 = extractelement <2 x double> %b, i64 0
   %4 = extractelement <2 x double> %c, i64 0
   %5 = call double @llvm.fma.f64(double %2, double %3, double %4)
   %6 = bitcast i8 %mask to <8 x i1>
   %7 = extractelement <8 x i1> %6, i64 0

 }
 
 define <4 x float> @test_mask3_vfmadd_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP3]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[C]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP3]], float [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[C]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %b, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = extractelement <4 x float> %3, i64 0
   %8 = extractelement <4 x float> %6, i64 0
   %9 = extractelement <4 x float> %c, i64 0
   %10 = call float @llvm.fma.f32(float %7, float %8, float %9)
   %11 = bitcast i8 %mask to <8 x i1>
   %12 = extractelement <8 x i1> %11, i64 0
   %13 = select i1 %12, float %10, float %9
   %14 = insertelement <4 x float> %c, float %13, i64 0
   ret <4 x float> %14
 }
 
 define float @test_mask3_vfmadd_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP3]]
-; CHECK-NEXT:    ret float [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP3]], float [[TMP4]]
+; CHECK-NEXT:    ret float [[TMP6]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = extractelement <4 x float> %a, i64 0
   %5 = extractelement <4 x float> %b, i64 0
   %6 = extractelement <4 x float> %3, i64 0
   %7 = call float @llvm.fma.f32(float %4, float %5, float %6)

 }
 
 define <2 x double> @test_mask3_vfmadd_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP3]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[C]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP3]], double [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[C]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %b, double 2.000000e+00, i32 1
   %3 = extractelement <2 x double> %1, i64 0
   %4 = extractelement <2 x double> %2, i64 0
   %5 = extractelement <2 x double> %c, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = bitcast i8 %mask to <8 x i1>
   %8 = extractelement <8 x i1> %7, i64 0
   %9 = select i1 %8, double %6, double %5
   %10 = insertelement <2 x double> %c, double %9, i64 0
   ret <2 x double> %10
 }
 
 define double @test_mask3_vfmadd_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP3]]
-; CHECK-NEXT:    ret double [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP3]], double [[TMP4]]
+; CHECK-NEXT:    ret double [[TMP6]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = extractelement <2 x double> %a, i64 0
   %3 = extractelement <2 x double> %b, i64 0
   %4 = extractelement <2 x double> %1, i64 0
   %5 = call double @llvm.fma.f64(double %2, double %3, double %4)
   %6 = bitcast i8 %mask to <8 x i1>
   %7 = extractelement <8 x i1> %6, i64 0

 define <4 x float> @test_mask3_vfmsub_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg float [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], float [[TMP5]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <4 x float> [[C]], float [[TMP9]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP10]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], float [[TMP6]], float [[TMP5]]
+; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <4 x float> [[C]], float [[TMP8]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP9]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %b, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %c

 define float @test_mask3_vfmsub_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg float [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C]], i32 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], float [[TMP5]], float [[TMP6]]
-; CHECK-NEXT:    ret float [[TMP9]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], float [[TMP6]], float [[TMP5]]
+; CHECK-NEXT:    ret float [[TMP8]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %3
   %5 = extractelement <4 x float> %a, i64 0
   %6 = extractelement <4 x float> %b, i64 0
   %7 = extractelement <4 x float> %4, i64 0

 define <2 x double> @test_mask3_vfmsub_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg double [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], double [[TMP5]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <2 x double> [[C]], double [[TMP9]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP10]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], double [[TMP6]], double [[TMP5]]
+; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <2 x double> [[C]], double [[TMP8]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP9]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %b, double 2.000000e+00, i32 1
   %3 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %c
   %4 = extractelement <2 x double> %1, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = extractelement <2 x double> %3, i64 0
   %7 = call double @llvm.fma.f64(double %4, double %5, double %6)
   %8 = extractelement <2 x double> %c, i64 0
   %9 = bitcast i8 %mask to <8 x i1>
   %10 = extractelement <8 x i1> %9, i64 0
   %11 = select i1 %10, double %7, double %8
   %12 = insertelement <2 x double> %c, double %11, i64 0
   ret <2 x double> %12
 }
 
 define double @test_mask3_vfmsub_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg double [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], double [[TMP5]], double [[TMP6]]
-; CHECK-NEXT:    ret double [[TMP9]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], double [[TMP6]], double [[TMP5]]
+; CHECK-NEXT:    ret double [[TMP8]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %1
   %3 = extractelement <2 x double> %a, i64 0
   %4 = extractelement <2 x double> %b, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = extractelement <2 x double> %1, i64 0

 ; CHECK-LABEL: @test_mask3_vfnmsub_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg float [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call float @llvm.fma.f32(float [[TMP2]], float [[TMP3]], float [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <4 x float> [[C]], i64 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], float [[TMP6]], float [[TMP7]]
-; CHECK-NEXT:    [[TMP11:%.*]] = insertelement <4 x float> [[C]], float [[TMP10]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP11]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], float [[TMP7]], float [[TMP6]]
+; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <4 x float> [[C]], float [[TMP9]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP10]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %b, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %3

 ; CHECK-LABEL: @test_mask3_vfnmsub_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[C:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg float [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call float @llvm.fma.f32(float [[TMP2]], float [[TMP3]], float [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <4 x float> [[C]], i32 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], float [[TMP6]], float [[TMP7]]
-; CHECK-NEXT:    ret float [[TMP10]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], float [[TMP7]], float [[TMP6]]
+; CHECK-NEXT:    ret float [[TMP9]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %a
   %5 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %3
   %6 = extractelement <4 x float> %4, i64 0
   %7 = extractelement <4 x float> %b, i64 0

 ; CHECK-LABEL: @test_mask3_vfnmsub_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg double [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call double @llvm.fma.f64(double [[TMP2]], double [[TMP3]], double [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], double [[TMP6]], double [[TMP7]]
-; CHECK-NEXT:    [[TMP11:%.*]] = insertelement <2 x double> [[C]], double [[TMP10]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP11]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], double [[TMP7]], double [[TMP6]]
+; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <2 x double> [[C]], double [[TMP9]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP10]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %b, double 2.000000e+00, i32 1
   %3 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %1
   %4 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %c
   %5 = extractelement <2 x double> %3, i64 0
   %6 = extractelement <2 x double> %2, i64 0
   %7 = extractelement <2 x double> %4, i64 0

 ; CHECK-LABEL: @test_mask3_vfnmsub_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg double [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call double @llvm.fma.f64(double [[TMP2]], double [[TMP3]], double [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], double [[TMP6]], double [[TMP7]]
-; CHECK-NEXT:    ret double [[TMP10]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], double [[TMP7]], double [[TMP6]]
+; CHECK-NEXT:    ret double [[TMP9]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %a
   %3 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %1
   %4 = extractelement <2 x double> %2, i64 0
   %5 = extractelement <2 x double> %b, i64 0
   %6 = extractelement <2 x double> %3, i64 0
   %7 = call double @llvm.fma.f64(double %4, double %5, double %6)

llvm/test/Transforms/InstCombine/X86/x86-avx512.ll

;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_add_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_add_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fadd float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.add.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_add_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_add_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fadd double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.add.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_add_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_add_sd_mask_round(
;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_sub_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_sub_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fsub float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.sub.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_sub_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_sub_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fsub double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.sub.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_sub_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_sub_sd_mask_round(
;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_mul_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mul_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fmul float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.mul.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_mul_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mul_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fmul double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.mul.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_mul_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mul_sd_mask_round(
;
   ret <4 x float> %4
 }
 
 define <4 x float> @test_div_ss_mask(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_div_ss_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fdiv float [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], float [[TMP3]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP5]], float [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = tail call <4 x float> @llvm.x86.avx512.mask.div.ss.round(<4 x float> %a, <4 x float> %b, <4 x float> %3, i8 %mask, i32 4)
   ret <4 x float> %4
 }
 
;
   ret <2 x double> %2
 }
 
 define <2 x double> @test_div_sd_mask(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_div_sd_mask(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = fdiv double [[TMP1]], [[TMP2]]
-; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i64 0
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP5]], double [[TMP3]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP4:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP4]], 0
+; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP5]], double [[TMP3]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = tail call <2 x double> @llvm.x86.avx512.mask.div.sd.round(<2 x double> %a, <2 x double> %b, <2 x double> %1, i8 %mask, i32 4)
   ret <2 x double> %2
 }
 
 define <2 x double> @test_div_sd_mask_round(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_div_sd_mask_round(

 declare float @llvm.fma.f32(float, float, float) #1
 
 define <4 x float> @test_mask_vfmadd_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP1]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP1]], float [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %b, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %c, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = extractelement <4 x float> %a, i64 0
   %8 = extractelement <4 x float> %3, i64 0
   %9 = extractelement <4 x float> %6, i64 0
   %10 = call float @llvm.fma.f32(float %7, float %8, float %9)
   %11 = bitcast i8 %mask to <8 x i1>
   %12 = extractelement <8 x i1> %11, i64 0
   %13 = select i1 %12, float %10, float %7
   %14 = insertelement <4 x float> %a, float %13, i64 0
   ret <4 x float> %14
 }
 
 define float @test_mask_vfmadd_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP1]]
-; CHECK-NEXT:    ret float [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP1]], float [[TMP4]]
+; CHECK-NEXT:    ret float [[TMP6]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = extractelement <4 x float> %3, i64 0
   %5 = extractelement <4 x float> %b, i64 0
   %6 = extractelement <4 x float> %c, i64 0
   %7 = call float @llvm.fma.f32(float %4, float %5, float %6)

 declare double @llvm.fma.f64(double, double, double) #1
 
 define <2 x double> @test_mask_vfmadd_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP1]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP1]], double [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %b, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %c, double 2.000000e+00, i32 1
   %3 = extractelement <2 x double> %a, i64 0
   %4 = extractelement <2 x double> %1, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = bitcast i8 %mask to <8 x i1>
   %8 = extractelement <8 x i1> %7, i64 0
   %9 = select i1 %8, double %6, double %3
   %10 = insertelement <2 x double> %a, double %9, i64 0
   ret <2 x double> %10
 }
 
 define double @test_mask_vfmadd_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask_vfmadd_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP1]]
-; CHECK-NEXT:    ret double [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP1]], double [[TMP4]]
+; CHECK-NEXT:    ret double [[TMP6]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = extractelement <2 x double> %1, i64 0
   %3 = extractelement <2 x double> %b, i64 0
   %4 = extractelement <2 x double> %c, i64 0
   %5 = call double @llvm.fma.f64(double %2, double %3, double %4)
   %6 = bitcast i8 %mask to <8 x i1>
   %7 = extractelement <8 x i1> %6, i64 0

 }
 
 define <4 x float> @test_maskz_vfmadd_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float 0.000000e+00
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[A]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float 0.000000e+00, float [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[A]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %b, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %c, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = extractelement <4 x float> %a, i64 0
   %8 = extractelement <4 x float> %3, i64 0
   %9 = extractelement <4 x float> %6, i64 0
   %10 = call float @llvm.fma.f32(float %7, float %8, float %9)
   %11 = bitcast i8 %mask to <8 x i1>
   %12 = extractelement <8 x i1> %11, i64 0
   %13 = select i1 %12, float %10, float 0.000000e+00
   %14 = insertelement <4 x float> %a, float %13, i64 0
   ret <4 x float> %14
 }
 
 define float @test_maskz_vfmadd_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float 0.000000e+00
-; CHECK-NEXT:    ret float [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float 0.000000e+00, float [[TMP4]]
+; CHECK-NEXT:    ret float [[TMP6]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = extractelement <4 x float> %3, i64 0
   %5 = extractelement <4 x float> %b, i64 0
   %6 = extractelement <4 x float> %c, i64 0
   %7 = call float @llvm.fma.f32(float %4, float %5, float %6)

 }
 
 define <2 x double> @test_maskz_vfmadd_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double 0.000000e+00
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[A]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double 0.000000e+00, double [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[A]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %b, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %c, double 2.000000e+00, i32 1
   %3 = extractelement <2 x double> %a, i64 0
   %4 = extractelement <2 x double> %1, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = bitcast i8 %mask to <8 x i1>
   %8 = extractelement <8 x i1> %7, i64 0
   %9 = select i1 %8, double %6, double 0.000000e+00
   %10 = insertelement <2 x double> %a, double %9, i64 0
   ret <2 x double> %10
 }
 
 define double @test_maskz_vfmadd_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_maskz_vfmadd_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double 0.000000e+00
-; CHECK-NEXT:    ret double [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double 0.000000e+00, double [[TMP4]]
+; CHECK-NEXT:    ret double [[TMP6]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = extractelement <2 x double> %1, i64 0
   %3 = extractelement <2 x double> %b, i64 0
   %4 = extractelement <2 x double> %c, i64 0
   %5 = call double @llvm.fma.f64(double %2, double %3, double %4)
   %6 = bitcast i8 %mask to <8 x i1>
   %7 = extractelement <8 x i1> %6, i64 0

 }
 
 define <4 x float> @test_mask3_vfmadd_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP3]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x float> [[C]], float [[TMP7]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP3]], float [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <4 x float> [[C]], float [[TMP6]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP7]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %b, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = extractelement <4 x float> %3, i64 0
   %8 = extractelement <4 x float> %6, i64 0
   %9 = extractelement <4 x float> %c, i64 0
   %10 = call float @llvm.fma.f32(float %7, float %8, float %9)
   %11 = bitcast i8 %mask to <8 x i1>
   %12 = extractelement <8 x i1> %11, i64 0
   %13 = select i1 %12, float %10, float %9
   %14 = insertelement <4 x float> %c, float %13, i64 0
   ret <4 x float> %14
 }
 
 define float @test_mask3_vfmadd_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], float [[TMP4]], float [[TMP3]]
-; CHECK-NEXT:    ret float [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], float [[TMP3]], float [[TMP4]]
+; CHECK-NEXT:    ret float [[TMP6]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = extractelement <4 x float> %a, i64 0
   %5 = extractelement <4 x float> %b, i64 0
   %6 = extractelement <4 x float> %3, i64 0
   %7 = call float @llvm.fma.f32(float %4, float %5, float %6)

 }
 
 define <2 x double> @test_mask3_vfmadd_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP3]]
-; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <2 x double> [[C]], double [[TMP7]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP8]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP3]], double [[TMP4]]
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x double> [[C]], double [[TMP6]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP7]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %b, double 2.000000e+00, i32 1
   %3 = extractelement <2 x double> %1, i64 0
   %4 = extractelement <2 x double> %2, i64 0
   %5 = extractelement <2 x double> %c, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = bitcast i8 %mask to <8 x i1>
   %8 = extractelement <8 x i1> %7, i64 0
   %9 = select i1 %8, double %6, double %5
   %10 = insertelement <2 x double> %c, double %9, i64 0
   ret <2 x double> %10
 }
 
 define double @test_mask3_vfmadd_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmadd_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP3]])
-; CHECK-NEXT:    [[TMP5:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i1> [[TMP5]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = select i1 [[TMP6]], double [[TMP4]], double [[TMP3]]
-; CHECK-NEXT:    ret double [[TMP7]]
+; CHECK-NEXT:    [[TMP5:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
+; CHECK-NEXT:    [[TMP6:%.*]] = select i1 [[DOTNOT]], double [[TMP3]], double [[TMP4]]
+; CHECK-NEXT:    ret double [[TMP6]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = extractelement <2 x double> %a, i64 0
   %3 = extractelement <2 x double> %b, i64 0
   %4 = extractelement <2 x double> %1, i64 0
   %5 = call double @llvm.fma.f64(double %2, double %3, double %4)
   %6 = bitcast i8 %mask to <8 x i1>
   %7 = extractelement <8 x i1> %6, i64 0

 define <4 x float> @test_mask3_vfmsub_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg float [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], float [[TMP5]], float [[TMP6]]
-; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <4 x float> [[C]], float [[TMP9]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP10]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], float [[TMP6]], float [[TMP5]]
+; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <4 x float> [[C]], float [[TMP8]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP9]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %b, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %c

 define float @test_mask3_vfmsub_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[C:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg float [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call float @llvm.fma.f32(float [[TMP1]], float [[TMP2]], float [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <4 x float> [[C]], i32 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], float [[TMP5]], float [[TMP6]]
-; CHECK-NEXT:    ret float [[TMP9]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], float [[TMP6]], float [[TMP5]]
+; CHECK-NEXT:    ret float [[TMP8]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %3
   %5 = extractelement <4 x float> %a, i64 0
   %6 = extractelement <4 x float> %b, i64 0
   %7 = extractelement <4 x float> %4, i64 0

 define <2 x double> @test_mask3_vfmsub_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg double [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], double [[TMP5]], double [[TMP6]]
-; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <2 x double> [[C]], double [[TMP9]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP10]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], double [[TMP6]], double [[TMP5]]
+; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <2 x double> [[C]], double [[TMP8]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP9]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %b, double 2.000000e+00, i32 1
   %3 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %c
   %4 = extractelement <2 x double> %1, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = extractelement <2 x double> %3, i64 0
   %7 = call double @llvm.fma.f64(double %4, double %5, double %6)
   %8 = extractelement <2 x double> %c, i64 0
   %9 = bitcast i8 %mask to <8 x i1>
   %10 = extractelement <8 x i1> %9, i64 0
   %11 = select i1 %10, double %7, double %8
   %12 = insertelement <2 x double> %c, double %11, i64 0
   ret <2 x double> %12
 }
 
 define double @test_mask3_vfmsub_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfmsub_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = fneg double [[TMP3]]
 ; CHECK-NEXT:    [[TMP5:%.*]] = call double @llvm.fma.f64(double [[TMP1]], double [[TMP2]], double [[TMP4]])
 ; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP7:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i1> [[TMP7]], i64 0
-; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[TMP8]], double [[TMP5]], double [[TMP6]]
-; CHECK-NEXT:    ret double [[TMP9]]
+; CHECK-NEXT:    [[TMP7:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP7]], 0
+; CHECK-NEXT:    [[TMP8:%.*]] = select i1 [[DOTNOT]], double [[TMP6]], double [[TMP5]]
+; CHECK-NEXT:    ret double [[TMP8]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %1
   %3 = extractelement <2 x double> %a, i64 0
   %4 = extractelement <2 x double> %b, i64 0
   %5 = extractelement <2 x double> %2, i64 0
   %6 = call double @llvm.fma.f64(double %3, double %4, double %5)
   %7 = extractelement <2 x double> %1, i64 0

 ; CHECK-LABEL: @test_mask3_vfnmsub_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg float [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call float @llvm.fma.f32(float [[TMP2]], float [[TMP3]], float [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <4 x float> [[C]], i64 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], float [[TMP6]], float [[TMP7]]
-; CHECK-NEXT:    [[TMP11:%.*]] = insertelement <4 x float> [[C]], float [[TMP10]], i64 0
-; CHECK-NEXT:    ret <4 x float> [[TMP11]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], float [[TMP7]], float [[TMP6]]
+; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <4 x float> [[C]], float [[TMP9]], i64 0
+; CHECK-NEXT:    ret <4 x float> [[TMP10]]
 ;
   %1 = insertelement <4 x float> %a, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = insertelement <4 x float> %b, float 4.000000e+00, i32 1
   %5 = insertelement <4 x float> %4, float 5.000000e+00, i32 2
   %6 = insertelement <4 x float> %5, float 6.000000e+00, i32 3
   %7 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %3

 ; CHECK-LABEL: @test_mask3_vfnmsub_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <4 x float> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <4 x float> [[C:%.*]], i32 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg float [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call float @llvm.fma.f32(float [[TMP2]], float [[TMP3]], float [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <4 x float> [[C]], i32 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], float [[TMP6]], float [[TMP7]]
-; CHECK-NEXT:    ret float [[TMP10]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], float [[TMP7]], float [[TMP6]]
+; CHECK-NEXT:    ret float [[TMP9]]
 ;
   %1 = insertelement <4 x float> %c, float 1.000000e+00, i32 1
   %2 = insertelement <4 x float> %1, float 2.000000e+00, i32 2
   %3 = insertelement <4 x float> %2, float 3.000000e+00, i32 3
   %4 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %a
   %5 = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %3
   %6 = extractelement <4 x float> %4, i64 0
   %7 = extractelement <4 x float> %b, i64 0

 ; CHECK-LABEL: @test_mask3_vfnmsub_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg double [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call double @llvm.fma.f64(double [[TMP2]], double [[TMP3]], double [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], double [[TMP6]], double [[TMP7]]
-; CHECK-NEXT:    [[TMP11:%.*]] = insertelement <2 x double> [[C]], double [[TMP10]], i64 0
-; CHECK-NEXT:    ret <2 x double> [[TMP11]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], double [[TMP7]], double [[TMP6]]
+; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <2 x double> [[C]], double [[TMP9]], i64 0
+; CHECK-NEXT:    ret <2 x double> [[TMP10]]
 ;
   %1 = insertelement <2 x double> %a, double 1.000000e+00, i32 1
   %2 = insertelement <2 x double> %b, double 2.000000e+00, i32 1
   %3 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %1
   %4 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %c
   %5 = extractelement <2 x double> %3, i64 0
   %6 = extractelement <2 x double> %2, i64 0
   %7 = extractelement <2 x double> %4, i64 0

 ; CHECK-LABEL: @test_mask3_vfnmsub_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP2:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <2 x double> [[B:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <2 x double> [[C:%.*]], i64 0
 ; CHECK-NEXT:    [[TMP5:%.*]] = fneg double [[TMP4]]
 ; CHECK-NEXT:    [[TMP6:%.*]] = call double @llvm.fma.f64(double [[TMP2]], double [[TMP3]], double [[TMP5]])
 ; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <2 x double> [[C]], i64 0
-; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8 [[MASK:%.*]] to <8 x i1>
-; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i1> [[TMP8]], i64 0
-; CHECK-NEXT:    [[TMP10:%.*]] = select i1 [[TMP9]], double [[TMP6]], double [[TMP7]]
-; CHECK-NEXT:    ret double [[TMP10]]
+; CHECK-NEXT:    [[TMP8:%.*]] = and i8 [[MASK:%.*]], 1
+; CHECK-NEXT:    [[DOTNOT:%.*]] = icmp eq i8 [[TMP8]], 0
+; CHECK-NEXT:    [[TMP9:%.*]] = select i1 [[DOTNOT]], double [[TMP7]], double [[TMP6]]
+; CHECK-NEXT:    ret double [[TMP9]]
 ;
   %1 = insertelement <2 x double> %c, double 1.000000e+00, i32 1
   %2 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %a
   %3 = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %1
   %4 = extractelement <2 x double> %2, i64 0
   %5 = extractelement <2 x double> %b, i64 0
   %6 = extractelement <2 x double> %3, i64 0
   %7 = call double @llvm.fma.f64(double %4, double %5, double %6)

llvm/test/Transforms/InstCombine/extractelement.ll

;
   %t4 = insertelement <4 x double> %b, double %t3, i32 2
   %e = extractelement <4 x double> %t4, i32 1
   store double %e, double* %p
   %e1 = extractelement <2 x double> %a, i32 4 ; invalid index
   %r = insertelement <4 x double> %t4, double %e1, i64 0
   ret <4 x double> %r
 }
 
+; i32 is a desirable/supported type independent of data layout.
+
 define i8 @bitcast_scalar_supported_type_index0(i32 %x) {
-; ANY-LABEL: @bitcast_scalar_supported_type_index0(
-; ANY-NEXT:    [[V:%.*]] = bitcast i32 [[X:%.*]] to <4 x i8>
-; ANY-NEXT:    [[R:%.*]] = extractelement <4 x i8> [[V]], i8 0
-; ANY-NEXT:    ret i8 [[R]]
+; LE-LABEL: @bitcast_scalar_supported_type_index0(
+; LE-NEXT:    [[R:%.*]] = trunc i32 [[X:%.*]] to i8
+; LE-NEXT:    ret i8 [[R]]
+;
+; BE-LABEL: @bitcast_scalar_supported_type_index0(
+; BE-NEXT:    [[EXTELT_OFFSET:%.*]] = lshr i32 [[X:%.*]], 24
+; BE-NEXT:    [[R:%.*]] = trunc i32 [[EXTELT_OFFSET]] to i8
+; BE-NEXT:    ret i8 [[R]]
 ;
   %v = bitcast i32 %x to <4 x i8>
   %r = extractelement <4 x i8> %v, i8 0
   ret i8 %r
 }
 
 define i8 @bitcast_scalar_supported_type_index2(i32 %x) {
-; ANY-LABEL: @bitcast_scalar_supported_type_index2(
-; ANY-NEXT:    [[V:%.*]] = bitcast i32 [[X:%.*]] to <4 x i8>
-; ANY-NEXT:    [[R:%.*]] = extractelement <4 x i8> [[V]], i64 2
-; ANY-NEXT:    ret i8 [[R]]
+; LE-LABEL: @bitcast_scalar_supported_type_index2(
+; LE-NEXT:    [[EXTELT_OFFSET:%.*]] = lshr i32 [[X:%.*]], 16
+; LE-NEXT:    [[R:%.*]] = trunc i32 [[EXTELT_OFFSET]] to i8
+; LE-NEXT:    ret i8 [[R]]
+;
+; BE-LABEL: @bitcast_scalar_supported_type_index2(
+; BE-NEXT:    [[EXTELT_OFFSET:%.*]] = lshr i32 [[X:%.*]], 8
+; BE-NEXT:    [[R:%.*]] = trunc i32 [[EXTELT_OFFSET]] to i8
+; BE-NEXT:    ret i8 [[R]]
 ;
   %v = bitcast i32 %x to <4 x i8>
   %r = extractelement <4 x i8> %v, i64 2
   ret i8 %r
 }
 
+; i64 is legal based on data layout.
+
 define i4 @bitcast_scalar_legal_type_index3(i64 %x) {
-; ANY-LABEL: @bitcast_scalar_legal_type_index3(
-; ANY-NEXT:    [[V:%.*]] = bitcast i64 [[X:%.*]] to <16 x i4>
-; ANY-NEXT:    [[R:%.*]] = extractelement <16 x i4> [[V]], i64 3
-; ANY-NEXT:    ret i4 [[R]]
+; LE-LABEL: @bitcast_scalar_legal_type_index3(
+; LE-NEXT:    [[EXTELT_OFFSET:%.*]] = lshr i64 [[X:%.*]], 12
+; LE-NEXT:    [[R:%.*]] = trunc i64 [[EXTELT_OFFSET]] to i4
+; LE-NEXT:    ret i4 [[R]]
+;
+; BE-LABEL: @bitcast_scalar_legal_type_index3(
+; BE-NEXT:    [[EXTELT_OFFSET:%.*]] = lshr i64 [[X:%.*]], 48
+; BE-NEXT:    [[R:%.*]] = trunc i64 [[EXTELT_OFFSET]] to i4
+; BE-NEXT:    ret i4 [[R]]
 ;
   %v = bitcast i64 %x to <16 x i4>
   %r = extractelement <16 x i4> %v, i64 3
   ret i4 %r
 }
 
+; negative test - don't create a shift for an illegal type.
+
 define i8 @bitcast_scalar_illegal_type_index1(i128 %x) {
 ; ANY-LABEL: @bitcast_scalar_illegal_type_index1(
 ; ANY-NEXT:    [[V:%.*]] = bitcast i128 [[X:%.*]] to <16 x i8>
 ; ANY-NEXT:    [[R:%.*]] = extractelement <16 x i8> [[V]], i64 1
 ; ANY-NEXT:    ret i8 [[R]]
 ;
   %v = bitcast i128 %x to <16 x i8>
   %r = extractelement <16 x i8> %v, i64 1
   ret i8 %r
 }
 
+; negative test - can't use shift/trunc on FP
+
 define i8 @bitcast_fp_index0(float %x) {
 ; ANY-LABEL: @bitcast_fp_index0(
 ; ANY-NEXT:    [[V:%.*]] = bitcast float [[X:%.*]] to <4 x i8>
 ; ANY-NEXT:    [[R:%.*]] = extractelement <4 x i8> [[V]], i8 0
 ; ANY-NEXT:    ret i8 [[R]]
 ;
   %v = bitcast float %x to <4 x i8>
   %r = extractelement <4 x i8> %v, i8 0
   ret i8 %r
 }
 
+; negative test - can't have FP dest type without a cast
+
 define half @bitcast_fpvec_index0(i32 %x) {
 ; ANY-LABEL: @bitcast_fpvec_index0(
 ; ANY-NEXT:    [[V:%.*]] = bitcast i32 [[X:%.*]] to <2 x half>
 ; ANY-NEXT:    [[R:%.*]] = extractelement <2 x half> [[V]], i8 0
 ; ANY-NEXT:    ret half [[R]]
 ;
   %v = bitcast i32 %x to <2 x half>
   %r = extractelement <2 x half> %v, i8 0
   ret half %r
 }
 
+; negative test - need constant index
+
 define i8 @bitcast_scalar_index_variable(i32 %x, i64 %y) {
 ; ANY-LABEL: @bitcast_scalar_index_variable(
 ; ANY-NEXT:    [[V:%.*]] = bitcast i32 [[X:%.*]] to <4 x i8>
 ; ANY-NEXT:    [[R:%.*]] = extractelement <4 x i8> [[V]], i64 [[Y:%.*]]
 ; ANY-NEXT:    ret i8 [[R]]
 ;
   %v = bitcast i32 %x to <4 x i8>
   %r = extractelement <4 x i8> %v, i64 %y
   ret i8 %r
 }
 
+; negative test - no extra uses
+
 define i8 @bitcast_scalar_index0_use(i64 %x) {
 ; ANY-LABEL: @bitcast_scalar_index0_use(
 ; ANY-NEXT:    [[V:%.*]] = bitcast i64 [[X:%.*]] to <8 x i8>
 ; ANY-NEXT:    call void @use(<8 x i8> [[V]])
 ; ANY-NEXT:    [[R:%.*]] = extractelement <8 x i8> [[V]], i64 0
 ; ANY-NEXT:    ret i8 [[R]]
 ;
   %v = bitcast i64 %x to <8 x i8>
   call void @use(<8 x i8> %v)
   %r = extractelement <8 x i8> %v, i64 0
   ret i8 %r
 }