diff options
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp index 2a9da59a6e9..6636f71a6d4 100644 --- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp @@ -1124,18 +1124,17 @@ Value *LibCallSimplifier::optimizeCAbs(CallInst *CI, IRBuilder<> &B) { Value *LibCallSimplifier::optimizeCos(CallInst *CI, IRBuilder<> &B) { Function *Callee = CI->getCalledFunction(); - Value *Ret = nullptr; StringRef Name = Callee->getName(); if (UnsafeFPShrink && Name == "cos" && hasFloatVersion(Name)) - Ret = optimizeUnaryDoubleFP(CI, B, true); + if (Value *V = optimizeUnaryDoubleFP(CI, B, true)) + return V; - // cos(-x) -> cos(x) - Value *Op1 = CI->getArgOperand(0); - if (BinaryOperator::isFNeg(Op1)) { - BinaryOperator *BinExpr = cast<BinaryOperator>(Op1); - return B.CreateCall(Callee, BinExpr->getOperand(1), "cos"); - } - return Ret; + // cos(-X) -> cos(X) + Value *X; + if (match(CI->getArgOperand(0), m_FNeg(m_Value(X)))) + return B.CreateCall(Callee, X, "cos"); + + return nullptr; } static Value *getPow(Value *InnerChain[33], unsigned Exp, IRBuilder<> &B) { |
