[llvm] r292172 - SimplifyLibCalls: Replace fabs libcalls with intrinsics
Matt Arsenault via llvm-commits
llvm-commits at lists.llvm.org
Mon Jan 16 16:10:40 PST 2017
Author: arsenm
Date: Mon Jan 16 18:10:40 2017
New Revision: 292172
URL: http://llvm.org/viewvc/llvm-project?rev=292172&view=rev
Log:
SimplifyLibCalls: Replace fabs libcalls with intrinsics
Add missing fabs(fpext) optimzation that worked with the call,
and also fixes it creating a second fpext when there were multiple
uses.
Added:
llvm/trunk/test/Transforms/InstCombine/fabs-libcall.ll
Modified:
llvm/trunk/include/llvm/IR/PatternMatch.h
llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp
llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp
llvm/trunk/test/Transforms/InstCombine/double-float-shrink-2.ll
llvm/trunk/test/Transforms/InstCombine/fabs.ll
llvm/trunk/test/Transforms/InstCombine/float-shrink-compare.ll
llvm/trunk/test/Transforms/InstCombine/pow-1.ll
llvm/trunk/test/Transforms/InstCombine/win-math.ll
llvm/trunk/test/Transforms/InstCombine/zero-point-zero-add.ll
Modified: llvm/trunk/include/llvm/IR/PatternMatch.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/PatternMatch.h?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/PatternMatch.h (original)
+++ llvm/trunk/include/llvm/IR/PatternMatch.h Mon Jan 16 18:10:40 2017
@@ -826,6 +826,18 @@ inline CastClass_match<OpTy, Instruction
return CastClass_match<OpTy, Instruction::SIToFP>(Op);
}
+/// \brief Matches FPTrunc
+template <typename OpTy>
+inline CastClass_match<OpTy, Instruction::FPTrunc> m_FPTrunc(const OpTy &Op) {
+ return CastClass_match<OpTy, Instruction::FPTrunc>(Op);
+}
+
+/// \brief Matches FPExt
+template <typename OpTy>
+inline CastClass_match<OpTy, Instruction::FPExt> m_FPExt(const OpTy &Op) {
+ return CastClass_match<OpTy, Instruction::FPExt>(Op);
+}
+
//===----------------------------------------------------------------------===//
// Matchers for unary operators
//
Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp Mon Jan 16 18:10:40 2017
@@ -1631,6 +1631,18 @@ Instruction *InstCombiner::visitCallInst
return SelectInst::Create(Cond, Call0, Call1);
}
+ Value *ExtSrc;
+ if (match(II->getArgOperand(0), m_FPExt(m_Value(ExtSrc))) &&
+ II->getArgOperand(0)->hasOneUse()) {
+ // fabs (fpext x) -> fpext (fabs x)
+ Value *F = Intrinsic::getDeclaration(II->getModule(), Intrinsic::fabs,
+ { ExtSrc->getType() });
+ CallInst *NewFabs = Builder->CreateCall(F, ExtSrc);
+ NewFabs->copyFastMathFlags(II);
+ NewFabs->takeName(II);
+ return new FPExtInst(NewFabs, II->getType());
+ }
+
break;
}
case Intrinsic::cos:
Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp Mon Jan 16 18:10:40 2017
@@ -1392,21 +1392,24 @@ Instruction *InstCombiner::visitFPTrunc(
IntrinsicInst *II = dyn_cast<IntrinsicInst>(CI.getOperand(0));
if (II) {
switch (II->getIntrinsicID()) {
- default: break;
- case Intrinsic::fabs: {
- // (fptrunc (fabs x)) -> (fabs (fptrunc x))
- Value *InnerTrunc = Builder->CreateFPTrunc(II->getArgOperand(0),
- CI.getType());
- Type *IntrinsicType[] = { CI.getType() };
- Function *Overload = Intrinsic::getDeclaration(
- CI.getModule(), II->getIntrinsicID(), IntrinsicType);
+ default: break;
+ case Intrinsic::fabs: {
+ // (fptrunc (fabs x)) -> (fabs (fptrunc x))
+ Value *InnerTrunc = Builder->CreateFPTrunc(II->getArgOperand(0),
+ CI.getType());
+ Type *IntrinsicType[] = { CI.getType() };
+ Function *Overload = Intrinsic::getDeclaration(
+ CI.getModule(), II->getIntrinsicID(), IntrinsicType);
- SmallVector<OperandBundleDef, 1> OpBundles;
- II->getOperandBundlesAsDefs(OpBundles);
+ SmallVector<OperandBundleDef, 1> OpBundles;
+ II->getOperandBundlesAsDefs(OpBundles);
- Value *Args[] = { InnerTrunc };
- return CallInst::Create(Overload, Args, OpBundles, II->getName());
- }
+ Value *Args[] = { InnerTrunc };
+ CallInst *NewCI = CallInst::Create(Overload, Args,
+ OpBundles, II->getName());
+ NewCI->copyFastMathFlags(II);
+ return NewCI;
+ }
}
}
Modified: llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/SimplifyLibCalls.cpp Mon Jan 16 18:10:40 2017
@@ -1210,11 +1210,15 @@ Value *LibCallSimplifier::optimizeExp2(C
Value *LibCallSimplifier::optimizeFabs(CallInst *CI, IRBuilder<> &B) {
Function *Callee = CI->getCalledFunction();
- StringRef Name = Callee->getName();
- if (Name == "fabs" && hasFloatVersion(Name))
- return optimizeUnaryDoubleFP(CI, B, false);
+ IRBuilder<>::FastMathFlagGuard Guard(B);
+ B.setFastMathFlags(CI->getFastMathFlags());
- return nullptr;
+ // fabs/fabsf -> llvm.fabs.*
+ Value *F = Intrinsic::getDeclaration(Callee->getParent(), Intrinsic::fabs,
+ CI->getType());
+ Value *NewCall = B.CreateCall(F, { CI->getArgOperand(0) });
+ NewCall->takeName(CI);
+ return NewCall;
}
Value *LibCallSimplifier::optimizeFMinFMax(CallInst *CI, IRBuilder<> &B) {
@@ -2029,8 +2033,6 @@ Value *LibCallSimplifier::optimizeCall(C
return optimizePow(CI, Builder);
case Intrinsic::exp2:
return optimizeExp2(CI, Builder);
- case Intrinsic::fabs:
- return optimizeFabs(CI, Builder);
case Intrinsic::log:
return optimizeLog(CI, Builder);
case Intrinsic::sqrt:
Modified: llvm/trunk/test/Transforms/InstCombine/double-float-shrink-2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/double-float-shrink-2.ll?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/double-float-shrink-2.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/double-float-shrink-2.ll Mon Jan 16 18:10:40 2017
@@ -10,7 +10,8 @@
; DO-SIMPLIFY: call float @roundf(
; DO-SIMPLIFY: call float @nearbyintf(
; DO-SIMPLIFY: call float @truncf(
-; DO-SIMPLIFY: call float @fabsf(
+; DO-SIMPLIFY: call float @llvm.fabs.f32(
+; DO-SIMPLIFY: call fast float @llvm.fabs.f32(
; C89-SIMPLIFY: call float @floorf(
; C89-SIMPLIFY: call float @ceilf(
@@ -22,7 +23,10 @@
; DONT-SIMPLIFY: call double @round(
; DONT-SIMPLIFY: call double @nearbyint(
; DONT-SIMPLIFY: call double @trunc(
-; DONT-SIMPLIFY: call double @fabs(
+
+; This is replaced with the intrinsic, which does the right thing on
+; all platforms.
+; DONT-SIMPLIFY: call float @llvm.fabs.f32(
declare double @floor(double)
declare double @ceil(double)
@@ -30,6 +34,7 @@ declare double @round(double)
declare double @nearbyint(double)
declare double @trunc(double)
declare double @fabs(double)
+declare double @llvm.fabs.f64(double)
define float @test_floor(float %C) {
%D = fpext float %C to double
@@ -78,3 +83,12 @@ define float @test_fabs(float %C) {
%F = fptrunc double %E to float
ret float %F
}
+
+; Make sure fast math flags are preserved
+define float @test_fabs_fast(float %C) {
+ %D = fpext float %C to double
+ ; --> fabsf
+ %E = call fast double @fabs(double %D)
+ %F = fptrunc double %E to float
+ ret float %F
+}
Added: llvm/trunk/test/Transforms/InstCombine/fabs-libcall.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/fabs-libcall.ll?rev=292172&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/fabs-libcall.ll (added)
+++ llvm/trunk/test/Transforms/InstCombine/fabs-libcall.ll Mon Jan 16 18:10:40 2017
@@ -0,0 +1,21 @@
+; RUN: opt -S -mtriple=i686-apple-macosx -instcombine %s | FileCheck %s
+
+declare x86_fp80 @fabsl(x86_fp80)
+
+; CHECK-LABEL: @replace_fabs_call_f80(
+; CHECK-NEXT: %fabsl = call x86_fp80 @llvm.fabs.f80(x86_fp80 %x)
+; CHECK-NEXT: ret x86_fp80 %fabsl
+define x86_fp80 @replace_fabs_call_f80(x86_fp80 %x) {
+ %fabsl = tail call x86_fp80 @fabsl(x86_fp80 %x)
+ ret x86_fp80 %fabsl
+
+}
+
+; CHECK-LABEL: @fmf_replace_fabs_call_f80(
+; CHECK-NEXT: %fabsl = call nnan x86_fp80 @llvm.fabs.f80(x86_fp80 %x)
+; CHECK-NEXT: ret x86_fp80 %fabsl
+define x86_fp80 @fmf_replace_fabs_call_f80(x86_fp80 %x) {
+ %fabsl = tail call nnan x86_fp80 @fabsl(x86_fp80 %x)
+ ret x86_fp80 %fabsl
+}
+
Modified: llvm/trunk/test/Transforms/InstCombine/fabs.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/fabs.ll?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/fabs.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/fabs.ll Mon Jan 16 18:10:40 2017
@@ -1,6 +1,10 @@
-; RUN: opt < %s -instcombine -S | FileCheck %s
+; RUN: opt -mtriple=x86_64-unknown-linux-gnu < %s -instcombine -S | FileCheck %s
-; Make sure all library calls are eliminated when the input is known positive.
+; Make sure libcalls are replaced with intrinsic calls.
+
+declare float @llvm.fabs.f32(float)
+declare double @llvm.fabs.f64(double)
+declare fp128 @llvm.fabs.f128(fp128)
declare float @fabsf(float)
declare double @fabs(double)
@@ -8,46 +12,46 @@ declare fp128 @fabsl(fp128)
declare float @llvm.fma.f32(float, float, float)
declare float @llvm.fmuladd.f32(float, float, float)
-define float @square_fabs_call_f32(float %x) {
- %mul = fmul float %x, %x
- %fabsf = tail call float @fabsf(float %mul)
+define float @replace_fabs_call_f32(float %x) {
+ %fabsf = tail call float @fabsf(float %x)
ret float %fabsf
-; CHECK-LABEL: square_fabs_call_f32(
-; CHECK-NEXT: %mul = fmul float %x, %x
-; CHECK-NEXT: %fabsf = tail call float @fabsf(float %mul)
+; CHECK-LABEL: @replace_fabs_call_f32(
+; CHECK-NEXT: %fabsf = call float @llvm.fabs.f32(float %x)
; CHECK-NEXT: ret float %fabsf
}
-define double @square_fabs_call_f64(double %x) {
- %mul = fmul double %x, %x
- %fabs = tail call double @fabs(double %mul)
+define double @replace_fabs_call_f64(double %x) {
+ %fabs = tail call double @fabs(double %x)
ret double %fabs
-; CHECK-LABEL: square_fabs_call_f64(
-; CHECK-NEXT: %mul = fmul double %x, %x
-; CHECK-NEXT: %fabs = tail call double @fabs(double %mul)
+; CHECK-LABEL: @replace_fabs_call_f64(
+; CHECK-NEXT: %fabs = call double @llvm.fabs.f64(double %x)
; CHECK-NEXT: ret double %fabs
}
-define fp128 @square_fabs_call_f128(fp128 %x) {
- %mul = fmul fp128 %x, %x
- %fabsl = tail call fp128 @fabsl(fp128 %mul)
+define fp128 @replace_fabs_call_f128(fp128 %x) {
+ %fabsl = tail call fp128 @fabsl(fp128 %x)
ret fp128 %fabsl
-; CHECK-LABEL: square_fabs_call_f128(
-; CHECK-NEXT: %mul = fmul fp128 %x, %x
-; CHECK-NEXT: %fabsl = tail call fp128 @fabsl(fp128 %mul)
+; CHECK-LABEL: replace_fabs_call_f128(
+; CHECK-NEXT: %fabsl = call fp128 @llvm.fabs.f128(fp128 %x)
; CHECK-NEXT: ret fp128 %fabsl
}
+; Make sure fast math flags are preserved when replacing the libcall.
+define float @fmf_replace_fabs_call_f32(float %x) {
+ %fabsf = tail call nnan float @fabsf(float %x)
+ ret float %fabsf
+
+; CHECK-LABEL: @fmf_replace_fabs_call_f32(
+; CHECK-NEXT: %fabsf = call nnan float @llvm.fabs.f32(float %x)
+; CHECK-NEXT: ret float %fabsf
+}
+
; Make sure all intrinsic calls are eliminated when the input is known
; positive.
-declare float @llvm.fabs.f32(float)
-declare double @llvm.fabs.f64(double)
-declare fp128 @llvm.fabs.f128(fp128)
-
; The fabs cannot be eliminated because %x may be a NaN
define float @square_fabs_intrinsic_f32(float %x) {
%mul = fmul float %x, %x
@@ -102,10 +106,8 @@ define float @square_fabs_shrink_call1(f
ret float %trunc
; CHECK-LABEL: square_fabs_shrink_call1(
-; CHECK-NEXT: %ext = fpext float %x to double
-; CHECK-NEXT: %sq = fmul double %ext, %ext
-; CHECK-NEXT: call double @fabs(double %sq)
-; CHECK-NEXT: %trunc = fptrunc double %fabs to float
+; CHECK-NEXT: fmul float %x, %x
+; CHECK-NEXT: %trunc = call float @llvm.fabs.f32(float
; CHECK-NEXT: ret float %trunc
}
@@ -118,8 +120,8 @@ define float @square_fabs_shrink_call2(f
; CHECK-LABEL: square_fabs_shrink_call2(
; CHECK-NEXT: %sq = fmul float %x, %x
-; CHECK-NEXT: %fabsf = call float @fabsf(float %sq)
-; CHECK-NEXT: ret float %fabsf
+; CHECK-NEXT: %trunc = call float @llvm.fabs.f32(float %sq)
+; CHECK-NEXT: ret float %trunc
}
; CHECK-LABEL: @fabs_select_constant_negative_positive(
@@ -214,3 +216,16 @@ define float @square_nnan_fmuladd_fabs_i
; CHECK-NEXT: %fmuladd = call nnan float @llvm.fmuladd.f32(float %x, float %x, float 1.000000e+00)
; CHECK-NEXT: ret float %fmuladd
}
+
+; Don't introduce a second fpext
+; CHECK-LABEL: @multi_use_fabs_fpext(
+; CHECK: %fpext = fpext float %x to double
+; CHECK-NEXT: %fabs = call double @llvm.fabs.f64(double %fpext)
+; CHECK-NEXT: store volatile double %fpext, double* undef, align 8
+; CHECK-NEXT: ret double %fabs
+define double @multi_use_fabs_fpext(float %x) {
+ %fpext = fpext float %x to double
+ %fabs = call double @llvm.fabs.f64(double %fpext)
+ store volatile double %fpext, double* undef
+ ret double %fabs
+}
Modified: llvm/trunk/test/Transforms/InstCombine/float-shrink-compare.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/float-shrink-compare.ll?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/float-shrink-compare.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/float-shrink-compare.ll Mon Jan 16 18:10:40 2017
@@ -22,8 +22,20 @@ define i32 @test2(float %x, float %y) no
%5 = zext i1 %4 to i32
ret i32 %5
; CHECK-LABEL: @test2(
-; CHECK-NEXT: %fabsf = call float @fabsf(float %x)
-; CHECK-NEXT: fcmp oeq float %fabsf, %y
+; CHECK-NEXT: [[FABS:%[0-9]+]] = call float @llvm.fabs.f32(float %x)
+; CHECK-NEXT: fcmp oeq float [[FABS]], %y
+}
+
+define i32 @fmf_test2(float %x, float %y) nounwind uwtable {
+ %1 = fpext float %x to double
+ %2 = call nnan double @fabs(double %1) nounwind readnone
+ %3 = fpext float %y to double
+ %4 = fcmp oeq double %2, %3
+ %5 = zext i1 %4 to i32
+ ret i32 %5
+; CHECK-LABEL: @fmf_test2(
+; CHECK-NEXT: [[FABS:%[0-9]+]] = call nnan float @llvm.fabs.f32(float %x)
+; CHECK-NEXT: fcmp oeq float [[FABS]], %y
}
define i32 @test3(float %x, float %y) nounwind uwtable {
@@ -99,15 +111,15 @@ define i32 @test8(float %x, float %y) no
}
define i32 @test9(float %x, float %y) nounwind uwtable {
- %1 = fpext float %y to double
- %2 = fpext float %x to double
- %3 = call double @fabs(double %2) nounwind readnone
- %4 = fcmp oeq double %1, %3
- %5 = zext i1 %4 to i32
- ret i32 %5
+ %x.ext = fpext float %x to double
+ %y.ext = fpext float %y to double
+ %fabs = call double @fabs(double %x.ext) nounwind readnone
+ %cmp = fcmp oeq double %y.ext, %fabs
+ %cmp.ext = zext i1 %cmp to i32
+ ret i32 %cmp.ext
; CHECK-LABEL: @test9(
-; CHECK-NEXT: %fabsf = call float @fabsf(float %x)
-; CHECK-NEXT: fcmp oeq float %fabsf, %y
+; CHECK-NEXT: %fabs = call float @llvm.fabs.f32(float %x)
+; CHECK-NEXT: fcmp oeq float %fabs, %y
}
define i32 @test10(float %x, float %y) nounwind uwtable {
Modified: llvm/trunk/test/Transforms/InstCombine/pow-1.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/pow-1.ll?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/pow-1.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/pow-1.ll Mon Jan 16 18:10:40 2017
@@ -72,7 +72,7 @@ define float @test_simplify7(float %x) {
; CHECK-LABEL: @test_simplify7(
%retval = call float @powf(float %x, float 0.5)
; CHECK-NEXT: [[SQRTF:%[a-z0-9]+]] = call float @sqrtf(float %x) [[NUW_RO:#[0-9]+]]
-; CHECK-NEXT: [[FABSF:%[a-z0-9]+]] = call float @fabsf(float [[SQRTF]]) [[NUW_RO]]
+; CHECK-NEXT: [[FABSF:%[a-z0-9]+]] = call float @llvm.fabs.f32(float [[SQRTF]])
; CHECK-NEXT: [[FCMP:%[a-z0-9]+]] = fcmp oeq float %x, 0xFFF0000000000000
; CHECK-NEXT: [[SELECT:%[a-z0-9]+]] = select i1 [[FCMP]], float 0x7FF0000000000000, float [[FABSF]]
ret float %retval
@@ -83,7 +83,7 @@ define double @test_simplify8(double %x)
; CHECK-LABEL: @test_simplify8(
%retval = call double @pow(double %x, double 0.5)
; CHECK-NEXT: [[SQRT:%[a-z0-9]+]] = call double @sqrt(double %x) [[NUW_RO]]
-; CHECK-NEXT: [[FABS:%[a-z0-9]+]] = call double @fabs(double [[SQRT]]) [[NUW_RO]]
+; CHECK-NEXT: [[FABS:%[a-z0-9]+]] = call double @llvm.fabs.f64(double [[SQRT]])
; CHECK-NEXT: [[FCMP:%[a-z0-9]+]] = fcmp oeq double %x, 0xFFF0000000000000
; CHECK-NEXT: [[SELECT:%[a-z0-9]+]] = select i1 [[FCMP]], double 0x7FF0000000000000, double [[FABS]]
ret double %retval
@@ -163,7 +163,7 @@ define double @test_simplify17(double %x
; CHECK-LABEL: @test_simplify17(
%retval = call double @llvm.pow.f64(double %x, double 0.5)
; CHECK-NEXT: [[SQRT:%[a-z0-9]+]] = call double @sqrt(double %x)
-; CHECK-NEXT: [[FABS:%[a-z0-9]+]] = call double @fabs(double [[SQRT]])
+; CHECK-NEXT: [[FABS:%[a-z0-9]+]] = call double @llvm.fabs.f64(double [[SQRT]])
; CHECK-NEXT: [[FCMP:%[a-z0-9]+]] = fcmp oeq double %x, 0xFFF0000000000000
; CHECK-NEXT: [[SELECT:%[a-z0-9]+]] = select i1 [[FCMP]], double 0x7FF0000000000000, double [[FABS]]
ret double %retval
Modified: llvm/trunk/test/Transforms/InstCombine/win-math.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/win-math.ll?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/win-math.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/win-math.ll Mon Jan 16 18:10:40 2017
@@ -284,11 +284,11 @@ define float @float_powsqrt(float %x) no
; WIN64: float @powf
; MINGW32-LABEL: @float_powsqrt(
; MINGW32: float @sqrtf
-; MINGW32: float @fabsf
+; MINGW32: float @llvm.fabs.f32
; MINGW32-NOT: float @powf
; MINGW64-LABEL: @float_powsqrt(
; MINGW64: float @sqrtf
-; MINGW64: float @fabsf
+; MINGW64: float @llvm.fabs.f32(
; MINGW64-NOT: float @powf
%1 = call float @powf(float %x, float 0.5)
ret float %1
Modified: llvm/trunk/test/Transforms/InstCombine/zero-point-zero-add.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/zero-point-zero-add.ll?rev=292172&r1=292171&r2=292172&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/zero-point-zero-add.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/zero-point-zero-add.ll Mon Jan 16 18:10:40 2017
@@ -15,7 +15,7 @@ define double @test(double %X) {
define double @test1(double %X) {
; CHECK-LABEL: @test1(
-; CHECK-NEXT: [[Y:%.*]] = call double @fabs(double %X)
+; CHECK-NEXT: [[Y:%.*]] = call double @llvm.fabs.f64(double %X)
; CHECK-NEXT: ret double [[Y]]
;
%Y = call double @fabs(double %X)
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