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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2017-01-17 00:30:31 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2017-01-17 00:30:31 +0000 |
| commit | b948b4d8df9d82786cc1782c8274febc527710c4 (patch) | |
| tree | b2a37ea327142b789ebfbdce1721018471820c3e /llvm/lib/Transforms | |
| parent | 0d7d9c20a531d843e7081154c96e84890b746131 (diff) | |
| download | bcm5719-llvm-b948b4d8df9d82786cc1782c8274febc527710c4.tar.gz bcm5719-llvm-b948b4d8df9d82786cc1782c8274febc527710c4.zip | |
SimplifyLibCalls: Remove checks for fabs
Use the intrinsic instead of emitting the libcall which
will be replaced by the intrinsic.
llvm-svn: 292176
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp index 945814e3a86..979aea2e1e1 100644 --- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp @@ -1094,9 +1094,7 @@ Value *LibCallSimplifier::optimizePow(CallInst *CI, IRBuilder<> &B) { if (Op2C->isExactlyValue(0.5) && hasUnaryFloatFn(TLI, Op2->getType(), LibFunc::sqrt, LibFunc::sqrtf, - LibFunc::sqrtl) && - hasUnaryFloatFn(TLI, Op2->getType(), LibFunc::fabs, LibFunc::fabsf, - LibFunc::fabsl)) { + LibFunc::sqrtl)) { // In -ffast-math, pow(x, 0.5) -> sqrt(x). if (CI->hasUnsafeAlgebra()) { @@ -1116,8 +1114,12 @@ Value *LibCallSimplifier::optimizePow(CallInst *CI, IRBuilder<> &B) { Value *Inf = ConstantFP::getInfinity(CI->getType()); Value *NegInf = ConstantFP::getInfinity(CI->getType(), true); Value *Sqrt = emitUnaryFloatFnCall(Op1, "sqrt", B, Callee->getAttributes()); - Value *FAbs = - emitUnaryFloatFnCall(Sqrt, "fabs", B, Callee->getAttributes()); + + Module *M = Callee->getParent(); + Function *FabsF = Intrinsic::getDeclaration(M, Intrinsic::fabs, + CI->getType()); + Value *FAbs = B.CreateCall(FabsF, Sqrt); + Value *FCmp = B.CreateFCmpOEQ(Op1, NegInf); Value *Sel = B.CreateSelect(FCmp, Inf, FAbs); return Sel; |
