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;
     }