diff --git a/clang/test/CodeGen/fma-builtins-constrained.c b/clang/test/CodeGen/fma-builtins-constrained.c
--- a/clang/test/CodeGen/fma-builtins-constrained.c
+++ b/clang/test/CodeGen/fma-builtins-constrained.c
@@ -66,10 +66,10 @@
 
 __m128 test_mm_fmsub_ss(__m128 a, __m128 b, __m128 c) {
   // COMMON-LABEL: test_mm_fmsub_ss
-  // COMMONIR: [[NEG:%.+]] = fneg <4 x float> %{{.+}}
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
+  // COMMONIR: [[NEG:%.+]] = fneg float %{{.+}}
   // UNCONSTRAINED: call float @llvm.fma.f32(float %{{.*}}, float %{{.*}}, float %{{.*}})
   // CONSTRAINED: call float @llvm.experimental.constrained.fma.f32(float %{{.*}}, float %{{.*}}, float %{{.*}}, metadata !{{.*}})
   // CHECK-ASM: vfmsub213ss
@@ -79,10 +79,10 @@
 
 __m128d test_mm_fmsub_sd(__m128d a, __m128d b, __m128d c) {
   // COMMON-LABEL: test_mm_fmsub_sd
-  // COMMONIR: [[NEG:%.+]] = fneg <2 x double> %{{.+}}
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
+  // COMMONIR: [[NEG:%.+]] = fneg double %{{.+}}
   // UNCONSTRAINED: call double @llvm.fma.f64(double %{{.*}}, double %{{.*}}, double %{{.*}})
   // CONSTRAINED: call double @llvm.experimental.constrained.fma.f64(double %{{.*}}, double %{{.*}}, double %{{.*}}, metadata !{{.*}})
   // CHECK-ASM: vfmsub213sd
@@ -110,9 +110,9 @@
 
 __m128 test_mm_fnmadd_ss(__m128 a, __m128 b, __m128 c) {
   // COMMON-LABEL: test_mm_fnmadd_ss
-  // COMMONIR: [[NEG:%.+]] = fneg <4 x float> %{{.+}}
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
+  // COMMONIR: [[NEG:%.+]] = fneg float %{{.+}}
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
   // UNCONSTRAINED: call float @llvm.fma.f32(float %{{.*}}, float %{{.*}}, float %{{.*}})
   // CONSTRAINED: call float @llvm.experimental.constrained.fma.f32(float %{{.*}}, float %{{.*}}, float %{{.*}}, metadata !{{.*}})
@@ -123,9 +123,9 @@
 
 __m128d test_mm_fnmadd_sd(__m128d a, __m128d b, __m128d c) {
   // COMMON-LABEL: test_mm_fnmadd_sd
-  // COMMONIR: [[NEG:%.+]] = fneg <2 x double> %{{.+}}
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
+  // COMMONIR: [[NEG:%.+]] = fneg double %{{.+}}
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
   // UNCONSTRAINED: call double @llvm.fma.f64(double %{{.*}}, double %{{.*}}, double %{{.*}})
   // CONSTRAINED: call double @llvm.experimental.constrained.fma.f64(double %{{.*}}, double %{{.*}}, double %{{.*}}, metadata !{{.*}})
@@ -156,11 +156,11 @@
 
 __m128 test_mm_fnmsub_ss(__m128 a, __m128 b, __m128 c) {
   // COMMON-LABEL: test_mm_fnmsub_ss
-  // COMMONIR: [[NEG:%.+]] = fneg <4 x float> %{{.+}}
-  // COMMONIR: [[NEG2:%.+]] = fneg <4 x float> %{{.+}}
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
+  // COMMONIR: [[NEG:%.+]] = fneg float %{{.+}}
   // COMMONIR: extractelement <4 x float> %{{.*}}, i64 0
+  // COMMONIR: [[NEG2:%.+]] = fneg float %{{.+}}
   // UNCONSTRAINED: call float @llvm.fma.f32(float %{{.*}}, float %{{.*}}, float %{{.*}})
   // CONSTRAINED: call float @llvm.experimental.constrained.fma.f32(float %{{.*}}, float %{{.*}}, float %{{.*}}, metadata !{{.*}})
   // CHECK-ASM: vfnmsub213ss
@@ -170,11 +170,11 @@
 
 __m128d test_mm_fnmsub_sd(__m128d a, __m128d b, __m128d c) {
   // COMMON-LABEL: test_mm_fnmsub_sd
-  // COMMONIR: [[NEG:%.+]] = fneg <2 x double> %{{.+}}
-  // COMMONIR: [[NEG2:%.+]] = fneg <2 x double> %{{.+}}
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
+  // COMMONIR: [[NEG:%.+]] = fneg double %{{.+}}
   // COMMONIR: extractelement <2 x double> %{{.*}}, i64 0
+  // COMMONIR: [[NEG2:%.+]] = fneg double %{{.+}}
   // UNCONSTRAINED: call double @llvm.fma.f64(double %{{.*}}, double %{{.*}}, double %{{.*}})
   // CONSTRAINED: call double @llvm.experimental.constrained.fma.f64(double %{{.*}}, double %{{.*}}, double %{{.*}}, metadata !{{.*}})
   // CHECK-ASM: vfnmsub213sd
diff --git a/llvm/include/llvm/IR/PatternMatch.h b/llvm/include/llvm/IR/PatternMatch.h
--- a/llvm/include/llvm/IR/PatternMatch.h
+++ b/llvm/include/llvm/IR/PatternMatch.h
@@ -71,6 +71,11 @@
 /// Match an arbitrary value and ignore it.
 inline class_match<Value> m_Value() { return class_match<Value>(); }
 
+/// Match an arbitrary unary operation and ignore it.
+inline class_match<UnaryOperator> m_UnOp() {
+  return class_match<UnaryOperator>();
+}
+
 /// Match an arbitrary binary operation and ignore it.
 inline class_match<BinaryOperator> m_BinOp() {
   return class_match<BinaryOperator>();
@@ -614,6 +619,8 @@
 
 /// Match an instruction, capturing it if we match.
 inline bind_ty<Instruction> m_Instruction(Instruction *&I) { return I; }
+/// Match a unary operator, capturing it if we match.
+inline bind_ty<UnaryOperator> m_UnOp(UnaryOperator *&I) { return I; }
 /// Match a binary operator, capturing it if we match.
 inline bind_ty<BinaryOperator> m_BinOp(BinaryOperator *&I) { return I; }
 /// Match a with overflow intrinsic, capturing it if we match.
@@ -785,6 +792,26 @@
   return AnyBinaryOp_match<LHS, RHS>(L, R);
 }
 
+//===----------------------------------------------------------------------===//
+// Matcher for any unary operator.
+// TODO fuse unary, binary matcher into n-ary matcher
+//
+template <typename OP_t> struct AnyUnaryOp_match {
+  OP_t X;
+
+  AnyUnaryOp_match(const OP_t &X) : X(X) {}
+
+  template <typename OpTy> bool match(OpTy *V) {
+    if (auto *I = dyn_cast<UnaryOperator>(V))
+      return X.match(I->getOperand(0));
+    return false;
+  }
+};
+
+template <typename OP_t> inline AnyUnaryOp_match<OP_t> m_UnOp(const OP_t &X) {
+  return AnyUnaryOp_match<OP_t>(X);
+}
+
 //===----------------------------------------------------------------------===//
 // Matchers for specific binary operators.
 //
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
--- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
@@ -663,8 +663,7 @@
 }
 
 Value *FAddCombine::createFNeg(Value *V) {
-  Value *Zero = cast<Value>(ConstantFP::getZeroValueForNegation(V->getType()));
-  Value *NewV = createFSub(Zero, V);
+  Value *NewV = Builder.CreateFNeg(V);
   if (Instruction *I = dyn_cast<Instruction>(NewV))
     createInstPostProc(I, true); // fneg's don't receive instruction numbers.
   return NewV;
@@ -724,8 +723,6 @@
     if (!CE.isMinusOne() && !CE.isOne())
       InstrNeeded++;
   }
-  if (NegOpndNum == OpndNum)
-    InstrNeeded++;
   return InstrNeeded;
 }
 
@@ -2133,10 +2130,15 @@
     return X;
 
   // Subtraction from -0.0 is the canonical form of fneg.
-  // fsub nsz 0, X ==> fsub nsz -0.0, X
-  Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
-  if (I.hasNoSignedZeros() && match(Op0, m_PosZeroFP()))
-    return UnaryOperator::CreateFNegFMF(Op1, &I);
+  // fsub -0.0, X ==> fneg X
+  // fsub nsz 0.0, X ==> fneg nsz X
+  //
+  // FIXME This matcher does not respect FTZ or DAZ yet:
+  // fsub -0.0, Denorm ==> +-0
+  // fneg Denorm ==> -Denorm
+  Value *Op;
+  if (match(&I, m_FNeg(m_Value(Op))))
+    return UnaryOperator::CreateFNegFMF(Op, &I);
 
   if (Instruction *X = foldFNegIntoConstant(I))
     return X;
@@ -2147,6 +2149,7 @@
   Value *X, *Y;
   Constant *C;
 
+  Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
   // If Op0 is not -0.0 or we can ignore -0.0: Z - (X - Y) --> Z + (Y - X)
   // Canonicalize to fadd to make analysis easier.
   // This can also help codegen because fadd is commutative.
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
--- a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -1634,10 +1634,6 @@
     if (match(Op, m_FNeg(m_Value(X)))) {
       Value *InnerTrunc = Builder.CreateFPTrunc(X, Ty);
 
-      // FIXME: Once we're sure that unary FNeg optimizations are on par with
-      // binary FNeg, this should always return a unary operator.
-      if (isa<BinaryOperator>(Op))
-        return UnaryOperator::CreateFNegFMF(InnerTrunc, Op);
       return UnaryOperator::CreateFNegFMF(InnerTrunc, Op);
     }
 
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
--- a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp
@@ -338,11 +338,7 @@
   if (match(TI, m_FNeg(m_Value(X))) && match(FI, m_FNeg(m_Value(Y))) &&
       (TI->hasOneUse() || FI->hasOneUse())) {
     Value *NewSel = Builder.CreateSelect(Cond, X, Y, SI.getName() + ".v", &SI);
-    // TODO: Remove the hack for the binop form when the unary op is optimized
-    //       properly with all IR passes.
-    if (TI->getOpcode() != Instruction::FNeg)
-      return UnaryOperator::CreateFNegFMF(NewSel, cast<BinaryOperator>(TI));
-    return UnaryOperator::CreateFNeg(NewSel);
+    return UnaryOperator::CreateFNegFMF(NewSel, TI);
   }
 
   // Only handle binary operators (including two-operand getelementptr) with
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -63,6 +63,9 @@
   if (match(V, m_OneUse(m_Load(m_Value()))))
     return true;
 
+  if (match(V, m_OneUse(m_UnOp())))
+    return true;
+
   Value *V0, *V1;
   if (match(V, m_OneUse(m_BinOp(m_Value(V0), m_Value(V1)))))
     if (cheapToScalarize(V0, IsConstantExtractIndex) ||
@@ -373,6 +376,16 @@
         return ScalarPHI;
   }
 
+  // TODO come up with a n-ary matcher that subsumes both unary and
+  // binary matchers.
+  UnaryOperator *UO;
+  if (match(SrcVec, m_UnOp(UO)) && cheapToScalarize(SrcVec, IndexC)) {
+    // extelt (unop X), Index --> unop (extelt X, Index)
+    Value *X = UO->getOperand(0);
+    Value *E = Builder.CreateExtractElement(X, Index);
+    return UnaryOperator::CreateWithCopiedFlags(UO->getOpcode(), E, UO);
+  }
+
   BinaryOperator *BO;
   if (match(SrcVec, m_BinOp(BO)) && cheapToScalarize(SrcVec, IndexC)) {
     // extelt (binop X, Y), Index --> binop (extelt X, Index), (extelt Y, Index)
diff --git a/llvm/test/Transforms/InstCombine/X86/x86-avx512.ll b/llvm/test/Transforms/InstCombine/X86/x86-avx512.ll
--- a/llvm/test/Transforms/InstCombine/X86/x86-avx512.ll
+++ b/llvm/test/Transforms/InstCombine/X86/x86-avx512.ll
@@ -1345,7 +1345,7 @@
 ; 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:%.*]] = fsub float -0.000000e+00, [[TMP3]]
+; 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>
@@ -1378,7 +1378,7 @@
 ; 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:%.*]] = fsub float -0.000000e+00, [[TMP3]]
+; 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>
@@ -1450,7 +1450,7 @@
 ; 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:%.*]] = fsub double -0.000000e+00, [[TMP3]]
+; 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>
@@ -1479,7 +1479,7 @@
 ; 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:%.*]] = fsub double -0.000000e+00, [[TMP3]]
+; 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>
@@ -1543,10 +1543,10 @@
 define <4 x float> @test_mask3_vfnmsub_ss(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfnmsub_ss(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
-; CHECK-NEXT:    [[TMP2:%.*]] = fsub float -0.000000e+00, [[TMP1]]
+; 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:%.*]] = fsub float -0.000000e+00, [[TMP4]]
+; 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>
@@ -1578,10 +1578,10 @@
 define float @test_mask3_vfnmsub_ss_0(<4 x float> %a, <4 x float> %b, <4 x float> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfnmsub_ss_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <4 x float> [[A:%.*]], i64 0
-; CHECK-NEXT:    [[TMP2:%.*]] = fsub float -0.000000e+00, [[TMP1]]
+; 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:%.*]] = fsub float -0.000000e+00, [[TMP4]]
+; 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>
@@ -1654,10 +1654,10 @@
 define <2 x double> @test_mask3_vfnmsub_sd(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfnmsub_sd(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
-; CHECK-NEXT:    [[TMP2:%.*]] = fsub double -0.000000e+00, [[TMP1]]
+; 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:%.*]] = fsub double -0.000000e+00, [[TMP4]]
+; 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>
@@ -1685,10 +1685,10 @@
 define double @test_mask3_vfnmsub_sd_0(<2 x double> %a, <2 x double> %b, <2 x double> %c, i8 %mask) {
 ; CHECK-LABEL: @test_mask3_vfnmsub_sd_0(
 ; CHECK-NEXT:    [[TMP1:%.*]] = extractelement <2 x double> [[A:%.*]], i64 0
-; CHECK-NEXT:    [[TMP2:%.*]] = fsub double -0.000000e+00, [[TMP1]]
+; 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:%.*]] = fsub double -0.000000e+00, [[TMP4]]
+; 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>
diff --git a/llvm/test/Transforms/InstCombine/cos-1.ll b/llvm/test/Transforms/InstCombine/cos-1.ll
--- a/llvm/test/Transforms/InstCombine/cos-1.ll
+++ b/llvm/test/Transforms/InstCombine/cos-1.ll
@@ -151,7 +151,7 @@
 
 define double @sin_negated_arg_extra_use(double %x) {
 ; ANY-LABEL: @sin_negated_arg_extra_use(
-; ANY-NEXT:    [[NEG:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
+; ANY-NEXT:    [[NEG:%.*]] = fneg double [[X:%.*]]
 ; ANY-NEXT:    [[R:%.*]] = call double @sin(double [[NEG]])
 ; ANY-NEXT:    call void @use(double [[NEG]])
 ; ANY-NEXT:    ret double [[R]]
diff --git a/llvm/test/Transforms/InstCombine/fadd.ll b/llvm/test/Transforms/InstCombine/fadd.ll
--- a/llvm/test/Transforms/InstCombine/fadd.ll
+++ b/llvm/test/Transforms/InstCombine/fadd.ll
@@ -165,7 +165,7 @@
 define float @fdiv_fneg1_extra_use(float %x, float %y, float %pz) {
 ; CHECK-LABEL: @fdiv_fneg1_extra_use(
 ; CHECK-NEXT:    [[Z:%.*]] = frem float 4.200000e+01, [[PZ:%.*]]
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
 ; CHECK-NEXT:    [[R:%.*]] = fadd float [[Z]], [[DIV]]
@@ -185,7 +185,7 @@
 ; CHECK-LABEL: @fdiv_fneg2_extra_use(
 ; CHECK-NEXT:    [[Y:%.*]] = frem float -4.200000e+01, [[PY:%.*]]
 ; CHECK-NEXT:    [[Z:%.*]] = frem float 4.200000e+01, [[PZ:%.*]]
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[Y]], [[NEG]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
 ; CHECK-NEXT:    [[R:%.*]] = fadd float [[Z]], [[DIV]]
@@ -205,7 +205,7 @@
 define <2 x float> @fmul_fneg1_extra_use(<2 x float> %x, <2 x float> %y, <2 x float> %pz) {
 ; CHECK-LABEL: @fmul_fneg1_extra_use(
 ; CHECK-NEXT:    [[Z:%.*]] = frem <2 x float> <float 4.200000e+01, float -1.000000e+00>, [[PZ:%.*]]
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul <2 x float> [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[MUL]])
 ; CHECK-NEXT:    [[R:%.*]] = fadd <2 x float> [[Z]], [[MUL]]
@@ -225,7 +225,7 @@
 ; CHECK-LABEL: @fmul_fneg2_extra_use(
 ; CHECK-NEXT:    [[Y:%.*]] = frem float -4.200000e+01, [[PY:%.*]]
 ; CHECK-NEXT:    [[Z:%.*]] = frem float 4.200000e+01, [[PZ:%.*]]
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[Y]], [[NEG]]
 ; CHECK-NEXT:    call void @use(float [[MUL]])
 ; CHECK-NEXT:    [[R:%.*]] = fadd float [[Z]], [[MUL]]
@@ -244,7 +244,7 @@
 
 define float @fdiv_fneg1_extra_use2(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fdiv_fneg1_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fdiv float [[X]], [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = fsub float [[Z:%.*]], [[TMP1]]
@@ -261,7 +261,7 @@
 
 define float @fdiv_fneg2_extra_use2(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fdiv_fneg2_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fdiv float [[Y:%.*]], [[X]]
 ; CHECK-NEXT:    [[R:%.*]] = fsub float [[Z:%.*]], [[TMP1]]
@@ -278,7 +278,7 @@
 
 define <2 x float> @fmul_fneg1_extra_use2(<2 x float> %x, <2 x float> %y, <2 x float> %z) {
 ; CHECK-LABEL: @fmul_fneg1_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fmul <2 x float> [[X]], [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = fsub <2 x float> [[Z:%.*]], [[TMP1]]
@@ -296,7 +296,7 @@
 define float @fmul_fneg2_extra_use2(float %x, float %py, float %z) {
 ; CHECK-LABEL: @fmul_fneg2_extra_use2(
 ; CHECK-NEXT:    [[Y:%.*]] = frem float -4.200000e+01, [[PY:%.*]]
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fmul float [[Y]], [[X]]
 ; CHECK-NEXT:    [[R:%.*]] = fsub float [[Z:%.*]], [[TMP1]]
@@ -314,7 +314,7 @@
 
 define float @fdiv_fneg1_extra_use3(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fdiv_fneg1_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
@@ -333,7 +333,7 @@
 
 define float @fdiv_fneg2_extra_use3(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fdiv_fneg2_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[Y:%.*]], [[NEG]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
@@ -352,7 +352,7 @@
 
 define <2 x float> @fmul_fneg1_extra_use3(<2 x float> %x, <2 x float> %y, <2 x float> %z) {
 ; CHECK-LABEL: @fmul_fneg1_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[NEG]])
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul <2 x float> [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[MUL]])
@@ -372,7 +372,7 @@
 define float @fmul_fneg2_extra_use3(float %x, float %py, float %z) {
 ; CHECK-LABEL: @fmul_fneg2_extra_use3(
 ; CHECK-NEXT:    [[Y:%.*]] = frem float -4.200000e+01, [[PY:%.*]]
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[Y]], [[NEG]]
 ; CHECK-NEXT:    call void @use(float [[MUL]])
diff --git a/llvm/test/Transforms/InstCombine/fast-math.ll b/llvm/test/Transforms/InstCombine/fast-math.ll
--- a/llvm/test/Transforms/InstCombine/fast-math.ll
+++ b/llvm/test/Transforms/InstCombine/fast-math.ll
@@ -429,7 +429,7 @@
 define double @fail2(double %f1, double %f2) {
 ; CHECK-LABEL: @fail2(
 ; CHECK-NEXT:    [[TMP1:%.*]] = fadd fast double [[F2:%.*]], [[F2]]
-; CHECK-NEXT:    [[TMP2:%.*]] = fsub fast double -0.000000e+00, [[TMP1]]
+; CHECK-NEXT:    [[TMP2:%.*]] = fneg fast double [[TMP1]]
 ; CHECK-NEXT:    ret double [[TMP2]]
 ;
   %t1 = fsub fast double %f1, %f2
diff --git a/llvm/test/Transforms/InstCombine/fdiv.ll b/llvm/test/Transforms/InstCombine/fdiv.ll
--- a/llvm/test/Transforms/InstCombine/fdiv.ll
+++ b/llvm/test/Transforms/InstCombine/fdiv.ll
@@ -516,7 +516,7 @@
 
 define double @fdiv_fneg1(double %x, double %y) {
 ; CHECK-LABEL: @fdiv_fneg1(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg double [[X:%.*]]
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv double [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    ret double [[DIV]]
 ;
@@ -538,7 +538,7 @@
 
 define <2 x float> @fdiv_fneg2(<2 x float> %x, <2 x float> %y) {
 ; CHECK-LABEL: @fdiv_fneg2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv <2 x float> [[Y:%.*]], [[NEG]]
 ; CHECK-NEXT:    ret <2 x float> [[DIV]]
 ;
@@ -560,7 +560,7 @@
 
 define float @fdiv_fneg1_extra_use(float %x, float %y) {
 ; CHECK-LABEL: @fdiv_fneg1_extra_use(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use_f32(float [[NEG]])
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    ret float [[DIV]]
diff --git a/llvm/test/Transforms/InstCombine/fmul.ll b/llvm/test/Transforms/InstCombine/fmul.ll
--- a/llvm/test/Transforms/InstCombine/fmul.ll
+++ b/llvm/test/Transforms/InstCombine/fmul.ll
@@ -211,8 +211,8 @@
 
 define float @neg_neg_multi_use(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_multi_use(
-; CHECK-NEXT:    [[NX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
-; CHECK-NEXT:    [[NY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NX:%.*]] = fneg float [[X:%.*]]
+; CHECK-NEXT:    [[NY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul afn float [[X]], [[Y]]
 ; CHECK-NEXT:    call void @use_f32(float [[NX]])
 ; CHECK-NEXT:    call void @use_f32(float [[NY]])
@@ -246,7 +246,7 @@
 define float @unary_neg_neg_multi_use(float %x, float %y) {
 ; CHECK-LABEL: @unary_neg_neg_multi_use(
 ; CHECK-NEXT:    [[NX:%.*]] = fneg float [[X:%.*]]
-; CHECK-NEXT:    [[NY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul afn float [[X]], [[Y]]
 ; CHECK-NEXT:    call void @use_f32(float [[NX]])
 ; CHECK-NEXT:    call void @use_f32(float [[NY]])
@@ -262,7 +262,7 @@
 
 define float @neg_unary_neg_multi_use(float %x, float %y) {
 ; CHECK-LABEL: @neg_unary_neg_multi_use(
-; CHECK-NEXT:    [[NX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NX:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[NY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul afn float [[X]], [[Y]]
 ; CHECK-NEXT:    call void @use_f32(float [[NX]])
@@ -280,7 +280,7 @@
 ; (-0.0 - X) * Y
 define float @neg_mul(float %x, float %y) {
 ; CHECK-LABEL: @neg_mul(
-; CHECK-NEXT:    [[SUB:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[SUB]], [[Y:%.*]]
 ; CHECK-NEXT:    ret float [[MUL]]
 ;
@@ -302,7 +302,7 @@
 
 define <2 x float> @neg_mul_vec(<2 x float> %x, <2 x float> %y) {
 ; CHECK-LABEL: @neg_mul_vec(
-; CHECK-NEXT:    [[SUB:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul <2 x float> [[SUB]], [[Y:%.*]]
 ; CHECK-NEXT:    ret <2 x float> [[MUL]]
 ;
@@ -324,7 +324,7 @@
 
 define <2 x float> @neg_mul_vec_undef(<2 x float> %x, <2 x float> %y) {
 ; CHECK-LABEL: @neg_mul_vec_undef(
-; CHECK-NEXT:    [[SUB:%.*]] = fsub <2 x float> <float undef, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul <2 x float> [[SUB]], [[Y:%.*]]
 ; CHECK-NEXT:    ret <2 x float> [[MUL]]
 ;
@@ -347,7 +347,7 @@
 
 define float @neg_sink_multi_use(float %x, float %y) {
 ; CHECK-LABEL: @neg_sink_multi_use(
-; CHECK-NEXT:    [[SUB1:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[SUB1:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[SUB1]], [[Y:%.*]]
 ; CHECK-NEXT:    [[MUL2:%.*]] = fmul float [[MUL]], [[SUB1]]
 ; CHECK-NEXT:    ret float [[MUL2]]
diff --git a/llvm/test/Transforms/InstCombine/fneg.ll b/llvm/test/Transforms/InstCombine/fneg.ll
--- a/llvm/test/Transforms/InstCombine/fneg.ll
+++ b/llvm/test/Transforms/InstCombine/fneg.ll
@@ -62,7 +62,7 @@
 define float @fmul_fsub_extra_use(float %x) {
 ; CHECK-LABEL: @fmul_fsub_extra_use(
 ; CHECK-NEXT:    [[M:%.*]] = fmul float [[X:%.*]], 4.200000e+01
-; CHECK-NEXT:    [[R:%.*]] = fsub float -0.000000e+00, [[M]]
+; CHECK-NEXT:    [[R:%.*]] = fneg float [[M]]
 ; CHECK-NEXT:    call void @use(float [[M]])
 ; CHECK-NEXT:    ret float [[R]]
 ;
@@ -156,7 +156,7 @@
 define float @fdiv_op1_constant_fsub_extra_use(float %x) {
 ; CHECK-LABEL: @fdiv_op1_constant_fsub_extra_use(
 ; CHECK-NEXT:    [[D:%.*]] = fdiv float [[X:%.*]], 4.200000e+01
-; CHECK-NEXT:    [[R:%.*]] = fsub float -0.000000e+00, [[D]]
+; CHECK-NEXT:    [[R:%.*]] = fneg float [[D]]
 ; CHECK-NEXT:    call void @use(float [[D]])
 ; CHECK-NEXT:    ret float [[R]]
 ;
@@ -250,7 +250,7 @@
 define float @fdiv_op0_constant_fsub_extra_use(float %x) {
 ; CHECK-LABEL: @fdiv_op0_constant_fsub_extra_use(
 ; CHECK-NEXT:    [[D:%.*]] = fdiv float -4.200000e+01, [[X:%.*]]
-; CHECK-NEXT:    [[R:%.*]] = fsub float -0.000000e+00, [[D]]
+; CHECK-NEXT:    [[R:%.*]] = fneg float [[D]]
 ; CHECK-NEXT:    call void @use(float [[D]])
 ; CHECK-NEXT:    ret float [[R]]
 ;
@@ -346,7 +346,7 @@
 
 define float @fsub_fsub_sel_extra_use1(float %x, float %y, i1 %cond) {
 ; CHECK-LABEL: @fsub_fsub_sel_extra_use1(
-; CHECK-NEXT:    [[N1:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[N1:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[N1]])
 ; CHECK-NEXT:    [[SEL_V:%.*]] = select i1 [[COND:%.*]], float [[X]], float [[Y:%.*]]
 ; CHECK-NEXT:    [[SEL:%.*]] = fneg float [[SEL_V]]
@@ -396,7 +396,7 @@
 define float @fake_nsz_fadd_constant(float %x) {
 ; CHECK-LABEL: @fake_nsz_fadd_constant(
 ; CHECK-NEXT:    [[A:%.*]] = fadd float [[X:%.*]], 4.200000e+01
-; CHECK-NEXT:    [[R:%.*]] = fsub float -0.000000e+00, [[A]]
+; CHECK-NEXT:    [[R:%.*]] = fneg float [[A]]
 ; CHECK-NEXT:    ret float [[R]]
 ;
   %a = fadd float %x, 42.0
@@ -449,7 +449,7 @@
 ; CHECK-LABEL: @fake_fneg_nsz_fadd_constant_extra_use(
 ; CHECK-NEXT:    [[A:%.*]] = fadd float [[X:%.*]], 4.200000e+01
 ; CHECK-NEXT:    call void @use(float [[A]])
-; CHECK-NEXT:    [[R:%.*]] = fsub fast float -0.000000e+00, [[A]]
+; CHECK-NEXT:    [[R:%.*]] = fneg fast float [[A]]
 ; CHECK-NEXT:    ret float [[R]]
 ;
   %a = fadd float %x, 42.0
diff --git a/llvm/test/Transforms/InstCombine/fpextend.ll b/llvm/test/Transforms/InstCombine/fpextend.ll
--- a/llvm/test/Transforms/InstCombine/fpextend.ll
+++ b/llvm/test/Transforms/InstCombine/fpextend.ll
@@ -38,7 +38,7 @@
 
 define float @test4(float %x) nounwind  {
 ; CHECK-LABEL: @test4(
-; CHECK-NEXT:    [[T34:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[T34:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    ret float [[T34]]
 ;
   %t1 = fpext float %x to double
diff --git a/llvm/test/Transforms/InstCombine/fsub.ll b/llvm/test/Transforms/InstCombine/fsub.ll
--- a/llvm/test/Transforms/InstCombine/fsub.ll
+++ b/llvm/test/Transforms/InstCombine/fsub.ll
@@ -6,7 +6,7 @@
 define float @test1(float %x, float %y) {
 ; CHECK-LABEL: @test1(
 ; CHECK-NEXT:    [[T1:%.*]] = fsub float [[X:%.*]], [[Y:%.*]]
-; CHECK-NEXT:    [[T2:%.*]] = fsub float -0.000000e+00, [[T1]]
+; CHECK-NEXT:    [[T2:%.*]] = fneg float [[T1]]
 ; CHECK-NEXT:    ret float [[T2]]
 ;
   %t1 = fsub float %x, %y
@@ -58,7 +58,7 @@
 define float @neg_sub_nsz_extra_use(float %x, float %y) {
 ; CHECK-LABEL: @neg_sub_nsz_extra_use(
 ; CHECK-NEXT:    [[T1:%.*]] = fsub float [[X:%.*]], [[Y:%.*]]
-; CHECK-NEXT:    [[T2:%.*]] = fsub nsz float -0.000000e+00, [[T1]]
+; CHECK-NEXT:    [[T2:%.*]] = fneg nsz float [[T1]]
 ; CHECK-NEXT:    call void @use(float [[T1]])
 ; CHECK-NEXT:    ret float [[T2]]
 ;
@@ -296,7 +296,7 @@
 
 define float @neg_ext_op1_extra_use(half %a, float %b) {
 ; CHECK-LABEL: @neg_ext_op1_extra_use(
-; CHECK-NEXT:    [[T1:%.*]] = fsub half 0xH8000, [[A:%.*]]
+; CHECK-NEXT:    [[T1:%.*]] = fneg half [[A:%.*]]
 ; CHECK-NEXT:    [[T2:%.*]] = fpext half [[T1]] to float
 ; CHECK-NEXT:    [[T3:%.*]] = fsub float [[B:%.*]], [[T2]]
 ; CHECK-NEXT:    call void @use(float [[T2]])
@@ -362,7 +362,7 @@
 
 define float @neg_trunc_op1_extra_uses(double %a, float %b) {
 ; CHECK-LABEL: @neg_trunc_op1_extra_uses(
-; CHECK-NEXT:    [[T1:%.*]] = fsub double -0.000000e+00, [[A:%.*]]
+; CHECK-NEXT:    [[T1:%.*]] = fneg double [[A:%.*]]
 ; CHECK-NEXT:    [[T2:%.*]] = fptrunc double [[T1]] to float
 ; CHECK-NEXT:    [[T3:%.*]] = fsub float [[B:%.*]], [[T2]]
 ; CHECK-NEXT:    call void @use2(float [[T2]], double [[T1]])
@@ -454,7 +454,7 @@
 
 define float @fsub_fdiv_fneg1_extra_use(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fdiv_fneg1_extra_use(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
 ; CHECK-NEXT:    [[R:%.*]] = fsub float [[Z:%.*]], [[DIV]]
@@ -469,7 +469,7 @@
 
 define float @fsub_fdiv_fneg2_extra_use(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fdiv_fneg2_extra_use(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[Y:%.*]], [[NEG]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
 ; CHECK-NEXT:    [[R:%.*]] = fsub float [[Z:%.*]], [[DIV]]
@@ -486,7 +486,7 @@
 
 define <2 x float> @fsub_fmul_fneg1_extra_use(<2 x float> %x, <2 x float> %y, <2 x float> %z) {
 ; CHECK-LABEL: @fsub_fmul_fneg1_extra_use(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul <2 x float> [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[MUL]])
 ; CHECK-NEXT:    [[R:%.*]] = fsub <2 x float> [[Z:%.*]], [[MUL]]
@@ -501,7 +501,7 @@
 
 define float @fsub_fmul_fneg2_extra_use(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fmul_fneg2_extra_use(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use(float [[MUL]])
 ; CHECK-NEXT:    [[R:%.*]] = fsub float [[Z:%.*]], [[MUL]]
@@ -516,7 +516,7 @@
 
 define float @fsub_fdiv_fneg1_extra_use2(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fdiv_fneg1_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fdiv float [[X]], [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = fadd float [[TMP1]], [[Z:%.*]]
@@ -531,7 +531,7 @@
 
 define float @fsub_fdiv_fneg2_extra_use2(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fdiv_fneg2_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fdiv float [[Y:%.*]], [[X]]
 ; CHECK-NEXT:    [[R:%.*]] = fadd float [[TMP1]], [[Z:%.*]]
@@ -546,7 +546,7 @@
 
 define <2 x float> @fsub_fmul_fneg1_extra_use2(<2 x float> %x, <2 x float> %y, <2 x float> %z) {
 ; CHECK-LABEL: @fsub_fmul_fneg1_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fmul <2 x float> [[X]], [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = fadd <2 x float> [[TMP1]], [[Z:%.*]]
@@ -561,7 +561,7 @@
 
 define float @fsub_fmul_fneg2_extra_use2(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fmul_fneg2_extra_use2(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = fmul float [[X]], [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = fadd float [[TMP1]], [[Z:%.*]]
@@ -576,7 +576,7 @@
 
 define float @fsub_fdiv_fneg1_extra_use3(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fdiv_fneg1_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
@@ -593,7 +593,7 @@
 
 define float @fsub_fdiv_fneg2_extra_use3(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fdiv_fneg2_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[DIV:%.*]] = fdiv float [[Y:%.*]], [[NEG]]
 ; CHECK-NEXT:    call void @use(float [[DIV]])
@@ -610,7 +610,7 @@
 
 define <2 x float> @fsub_fmul_fneg1_extra_use3(<2 x float> %x, <2 x float> %y, <2 x float> %z) {
 ; CHECK-LABEL: @fsub_fmul_fneg1_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[NEG]])
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul <2 x float> [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[MUL]])
@@ -627,7 +627,7 @@
 
 define float @fsub_fmul_fneg2_extra_use3(float %x, float %y, float %z) {
 ; CHECK-LABEL: @fsub_fmul_fneg2_extra_use3(
-; CHECK-NEXT:    [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEG:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEG]])
 ; CHECK-NEXT:    [[MUL:%.*]] = fmul float [[NEG]], [[Y:%.*]]
 ; CHECK-NEXT:    call void @use(float [[MUL]])
@@ -753,9 +753,9 @@
 
 define float @fake_fneg_fsub_fast_extra_use(float %x, float %y) {
 ; CHECK-LABEL: @fake_fneg_fsub_fast_extra_use(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    call void @use(float [[NEGX]])
-; CHECK-NEXT:    [[SUB:%.*]] = fsub fast float [[NEGX]], [[Y:%.*]]
+; CHECK-NEXT:    [[SUB:%.*]] = fsub fast float [[NEGX:%.*]], [[Y:%.*]]
 ; CHECK-NEXT:    ret float [[SUB]]
 ;
   %negx = fsub float -0.0, %x
diff --git a/llvm/test/Transforms/InstCombine/maximum.ll b/llvm/test/Transforms/InstCombine/maximum.ll
--- a/llvm/test/Transforms/InstCombine/maximum.ll
+++ b/llvm/test/Transforms/InstCombine/maximum.ll
@@ -270,7 +270,7 @@
 declare void @use(float)
 define float @neg_neg_extra_use_x(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call float @llvm.minimum.f32(float [[X]], float [[Y:%.*]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    call void @use(float [[NEGX]])
@@ -300,7 +300,7 @@
 
 define float @neg_neg_extra_use_y(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_y(
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call float @llvm.minimum.f32(float [[X:%.*]], float [[Y]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    call void @use(float [[NEGY]])
@@ -330,8 +330,8 @@
 
 define float @neg_neg_extra_use_x_and_y(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x_and_y(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg float [[X:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = call float @llvm.maximum.f32(float [[NEGX]], float [[NEGY]])
 ; CHECK-NEXT:    call void @use(float [[NEGX]])
 ; CHECK-NEXT:    call void @use(float [[NEGY]])
diff --git a/llvm/test/Transforms/InstCombine/maxnum.ll b/llvm/test/Transforms/InstCombine/maxnum.ll
--- a/llvm/test/Transforms/InstCombine/maxnum.ll
+++ b/llvm/test/Transforms/InstCombine/maxnum.ll
@@ -264,7 +264,7 @@
 declare void @use(float)
 define float @neg_neg_extra_use_x(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg float [[X:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call float @llvm.minnum.f32(float [[X]], float [[Y:%.*]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    call void @use(float [[NEGX]])
@@ -294,7 +294,7 @@
 
 define float @neg_neg_extra_use_y(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_y(
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call float @llvm.minnum.f32(float [[X:%.*]], float [[Y]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg float [[TMP1]]
 ; CHECK-NEXT:    call void @use(float [[NEGY]])
@@ -324,8 +324,8 @@
 
 define float @neg_neg_extra_use_x_and_y(float %x, float %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x_and_y(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub float -0.000000e+00, [[X:%.*]]
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub float -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg float [[X:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg float [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = call float @llvm.maxnum.f32(float [[NEGX]], float [[NEGY]])
 ; CHECK-NEXT:    call void @use(float [[NEGX]])
 ; CHECK-NEXT:    call void @use(float [[NEGY]])
diff --git a/llvm/test/Transforms/InstCombine/minimum.ll b/llvm/test/Transforms/InstCombine/minimum.ll
--- a/llvm/test/Transforms/InstCombine/minimum.ll
+++ b/llvm/test/Transforms/InstCombine/minimum.ll
@@ -295,7 +295,7 @@
 declare void @use(double)
 define double @neg_neg_extra_use_x(double %x, double %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg double [[X:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call double @llvm.maximum.f64(double [[X]], double [[Y:%.*]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    call void @use(double [[NEGX]])
@@ -325,7 +325,7 @@
 
 define double @neg_neg_extra_use_y(double %x, double %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_y(
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub double -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg double [[Y:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call double @llvm.maximum.f64(double [[X:%.*]], double [[Y]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    call void @use(double [[NEGY]])
@@ -355,8 +355,8 @@
 
 define double @neg_neg_extra_use_x_and_y(double %x, double %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x_and_y(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub double -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg double [[X:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg double [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = call double @llvm.minimum.f64(double [[NEGX]], double [[NEGY]])
 ; CHECK-NEXT:    call void @use(double [[NEGX]])
 ; CHECK-NEXT:    call void @use(double [[NEGY]])
diff --git a/llvm/test/Transforms/InstCombine/minnum.ll b/llvm/test/Transforms/InstCombine/minnum.ll
--- a/llvm/test/Transforms/InstCombine/minnum.ll
+++ b/llvm/test/Transforms/InstCombine/minnum.ll
@@ -301,7 +301,7 @@
 declare void @use(double)
 define double @neg_neg_extra_use_x(double %x, double %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg double [[X:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call double @llvm.maxnum.f64(double [[X]], double [[Y:%.*]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    call void @use(double [[NEGX]])
@@ -331,7 +331,7 @@
 
 define double @neg_neg_extra_use_y(double %x, double %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_y(
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub double -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg double [[Y:%.*]]
 ; CHECK-NEXT:    [[TMP1:%.*]] = call double @llvm.maxnum.f64(double [[X:%.*]], double [[Y]])
 ; CHECK-NEXT:    [[R:%.*]] = fneg double [[TMP1]]
 ; CHECK-NEXT:    call void @use(double [[NEGY]])
@@ -361,8 +361,8 @@
 
 define double @neg_neg_extra_use_x_and_y(double %x, double %y) {
 ; CHECK-LABEL: @neg_neg_extra_use_x_and_y(
-; CHECK-NEXT:    [[NEGX:%.*]] = fsub double -0.000000e+00, [[X:%.*]]
-; CHECK-NEXT:    [[NEGY:%.*]] = fsub double -0.000000e+00, [[Y:%.*]]
+; CHECK-NEXT:    [[NEGX:%.*]] = fneg double [[X:%.*]]
+; CHECK-NEXT:    [[NEGY:%.*]] = fneg double [[Y:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = call double @llvm.minnum.f64(double [[NEGX]], double [[NEGY]])
 ; CHECK-NEXT:    call void @use(double [[NEGX]])
 ; CHECK-NEXT:    call void @use(double [[NEGY]])
diff --git a/llvm/test/Transforms/InstCombine/operand-complexity.ll b/llvm/test/Transforms/InstCombine/operand-complexity.ll
--- a/llvm/test/Transforms/InstCombine/operand-complexity.ll
+++ b/llvm/test/Transforms/InstCombine/operand-complexity.ll
@@ -92,7 +92,7 @@
 define float @fneg(float %x) {
 ; CHECK-LABEL: @fneg(
 ; CHECK-NEXT:    [[BO:%.*]] = fdiv float [[X:%.*]], 4.200000e+01
-; CHECK-NEXT:    [[FNEGX:%.*]] = fsub float -0.000000e+00, [[X]]
+; CHECK-NEXT:    [[FNEGX:%.*]] = fneg float [[X]]
 ; CHECK-NEXT:    [[R:%.*]] = fmul float [[BO]], [[FNEGX]]
 ; CHECK-NEXT:    call void @use(float [[FNEGX]])
 ; CHECK-NEXT:    ret float [[R]]
@@ -122,7 +122,7 @@
 define <2 x float> @fneg_vec(<2 x float> %x) {
 ; CHECK-LABEL: @fneg_vec(
 ; CHECK-NEXT:    [[BO:%.*]] = fdiv <2 x float> [[X:%.*]], <float 4.200000e+01, float -4.200000e+01>
-; CHECK-NEXT:    [[FNEGX:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[X]]
+; CHECK-NEXT:    [[FNEGX:%.*]] = fneg <2 x float> [[X]]
 ; CHECK-NEXT:    [[R:%.*]] = fmul <2 x float> [[BO]], [[FNEGX]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[FNEGX]])
 ; CHECK-NEXT:    ret <2 x float> [[R]]
@@ -137,7 +137,7 @@
 define <2 x float> @fneg_vec_undef(<2 x float> %x) {
 ; CHECK-LABEL: @fneg_vec_undef(
 ; CHECK-NEXT:    [[BO:%.*]] = fdiv <2 x float> [[X:%.*]], <float 4.200000e+01, float -4.200000e+01>
-; CHECK-NEXT:    [[FNEGX:%.*]] = fsub <2 x float> <float -0.000000e+00, float undef>, [[X]]
+; CHECK-NEXT:    [[FNEGX:%.*]] = fneg <2 x float> [[X]]
 ; CHECK-NEXT:    [[R:%.*]] = fmul <2 x float> [[BO]], [[FNEGX]]
 ; CHECK-NEXT:    call void @use_vec(<2 x float> [[FNEGX]])
 ; CHECK-NEXT:    ret <2 x float> [[R]]
diff --git a/llvm/test/Transforms/InstCombine/vec_shuffle.ll b/llvm/test/Transforms/InstCombine/vec_shuffle.ll
--- a/llvm/test/Transforms/InstCombine/vec_shuffle.ll
+++ b/llvm/test/Transforms/InstCombine/vec_shuffle.ll
@@ -1263,7 +1263,7 @@
 
 define <2 x float> @fneg(<2 x float> %x) {
 ; CHECK-LABEL: @fneg(
-; CHECK-NEXT:    [[TMP1:%.*]] = fsub <2 x float> <float -0.000000e+00, float undef>, [[X:%.*]]
+; CHECK-NEXT:    [[TMP1:%.*]] = fneg <2 x float> [[X:%.*]]
 ; CHECK-NEXT:    [[R:%.*]] = shufflevector <2 x float> [[TMP1]], <2 x float> undef, <2 x i32> zeroinitializer
 ; CHECK-NEXT:    ret <2 x float> [[R]]
 ;