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| author | Sanjay Patel <spatel@rotateright.com> | 2016-01-11 23:31:48 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2016-01-11 23:31:48 +0000 |
| commit | e896ede7f1e0592b55e824a6ef7fdbd63fa3d1e7 (patch) | |
| tree | 1ad1c9a272b2bce8a93258f277e4d6a49ef33ba5 /llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp | |
| parent | 7bf779859a2c90017796c55d18b53ff00c27c9bf (diff) | |
| download | llvm-e896ede7f1e0592b55e824a6ef7fdbd63fa3d1e7.zip llvm-e896ede7f1e0592b55e824a6ef7fdbd63fa3d1e7.tar.gz llvm-e896ede7f1e0592b55e824a6ef7fdbd63fa3d1e7.tar.bz2 | |
[LibCallSimplifier] use instruction-level fast-math-flags to transform log calls
Also, add tests to verify that we're checking 'fast' on both calls of each transform pair,
tighten the CHECK lines, and give the tests more meaningful names.
This is a continuation of:
http://reviews.llvm.org/rL255555
http://reviews.llvm.org/rL256871
http://reviews.llvm.org/rL256964
http://reviews.llvm.org/rL257400
http://reviews.llvm.org/rL257404
llvm-svn: 257414
Diffstat (limited to 'llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp index ef70049..2434546 100644 --- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp @@ -1354,11 +1354,13 @@ Value *LibCallSimplifier::optimizeLog(CallInst *CI, IRBuilder<> &B) { !FT->getParamType(0)->isFloatingPointTy()) return Ret; - if (!canUseUnsafeFPMath(CI->getParent()->getParent())) + if (!CI->hasUnsafeAlgebra()) return Ret; Value *Op1 = CI->getArgOperand(0); auto *OpC = dyn_cast<CallInst>(Op1); - if (!OpC) + + // The earlier call must also be unsafe in order to do these transforms. + if (!OpC || !OpC->hasUnsafeAlgebra()) return Ret; // log(pow(x,y)) -> y*log(x) |