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| author | Dmitry Venikov <quolyk@gmail.com> | 2018-01-11 06:33:00 +0000 |
|---|---|---|
| committer | Dmitry Venikov <quolyk@gmail.com> | 2018-01-11 06:33:00 +0000 |
| commit | e5fbf591a7fde1e019944746d0cbc75c6cb131e4 (patch) | |
| tree | 9fcd5478022fc8f171777efcb1abb0812fa228c3 /llvm/lib/Transforms/Utils/BuildLibCalls.cpp | |
| parent | 0b59034b15e8b7c88b70a2523f02df045b2cc834 (diff) | |
| download | llvm-e5fbf591a7fde1e019944746d0cbc75c6cb131e4.zip llvm-e5fbf591a7fde1e019944746d0cbc75c6cb131e4.tar.gz llvm-e5fbf591a7fde1e019944746d0cbc75c6cb131e4.tar.bz2 | |
[InstCombine] Missed optimization in math expression: sin(x) / cos(x) => tan(x)
Summary: This patch enables folding sin(x) / cos(x) -> tan(x), cos(x) / sin(x) -> 1 / tan(x) under -ffast-math flag
Reviewers: hfinkel, spatel
Reviewed By: spatel
Subscribers: andrew.w.kaylor, efriedma, scanon, llvm-commits
Differential Revision: https://reviews.llvm.org/D41286
llvm-svn: 322255
Diffstat (limited to 'llvm/lib/Transforms/Utils/BuildLibCalls.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/BuildLibCalls.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp index b60dfb4..d4cf03c 100644 --- a/llvm/lib/Transforms/Utils/BuildLibCalls.cpp +++ b/llvm/lib/Transforms/Utils/BuildLibCalls.cpp @@ -709,6 +709,19 @@ bool llvm::inferLibFuncAttributes(Function &F, const TargetLibraryInfo &TLI) { } } +bool llvm::hasUnaryFloatFn(const TargetLibraryInfo *TLI, Type *Ty, + LibFunc DoubleFn, LibFunc FloatFn, + LibFunc LongDoubleFn) { + switch (Ty->getTypeID()) { + case Type::FloatTyID: + return TLI->has(FloatFn); + case Type::DoubleTyID: + return TLI->has(DoubleFn); + default: + return TLI->has(LongDoubleFn); + } +} + //- Emit LibCalls ------------------------------------------------------------// Value *llvm::castToCStr(Value *V, IRBuilder<> &B) { |