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| author | Karthik Bhat <kv.bhat@samsung.com> | 2014-03-06 05:32:52 +0000 |
|---|---|---|
| committer | Karthik Bhat <kv.bhat@samsung.com> | 2014-03-06 05:32:52 +0000 |
| commit | daa8cd10d9624f41882136e6c747af8d0d179de3 (patch) | |
| tree | d34e1a1102c28b74be8f0eba323b8a2f880e17ba /llvm/lib/Analysis/ConstantFolding.cpp | |
| parent | da1ebedeea4314d92e6688da36f0e6ea66eb3dd6 (diff) | |
| download | llvm-daa8cd10d9624f41882136e6c747af8d0d179de3.zip llvm-daa8cd10d9624f41882136e6c747af8d0d179de3.tar.gz llvm-daa8cd10d9624f41882136e6c747af8d0d179de3.tar.bz2 | |
Allow constant folding of copysign
llvm-svn: 203076
Diffstat (limited to 'llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index 08b6067..ff1124a 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -1195,6 +1195,7 @@ bool llvm::canConstantFoldCallTo(const Function *F) { case Intrinsic::cttz: case Intrinsic::fma: case Intrinsic::fmuladd: + case Intrinsic::copysign: case Intrinsic::sadd_with_overflow: case Intrinsic::uadd_with_overflow: case Intrinsic::ssub_with_overflow: @@ -1532,6 +1533,12 @@ static Constant *ConstantFoldScalarCall(StringRef Name, unsigned IntrinsicID, if (IntrinsicID == Intrinsic::pow) { return ConstantFoldBinaryFP(pow, Op1V, Op2V, Ty); } + if (IntrinsicID == Intrinsic::copysign) { + APFloat V1 = Op1->getValueAPF(); + APFloat V2 = Op2->getValueAPF(); + V1.copySign(V2); + return ConstantFP::get(Ty->getContext(), V1); + } if (!TLI) return 0; if (Name == "pow" && TLI->has(LibFunc::pow)) |