diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index 1cef8d956b7..e96e45e802a 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -2258,11 +2258,9 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { return II; } - // Try to simplify the underlying FMul. - if (Value *V = SimplifyFMulInst(II->getArgOperand(0), II->getArgOperand(1), - II->getFastMathFlags(), - SQ.getWithInstruction(II))) { - auto *FAdd = BinaryOperator::CreateFAdd(V, II->getArgOperand(2)); + // fma x, 1, z -> fadd x, z + if (match(Src1, m_FPOne())) { + auto *FAdd = BinaryOperator::CreateFAdd(Src0, II->getArgOperand(2)); FAdd->copyFastMathFlags(II); return FAdd; } |
