Fix an issue where fast math flags were dropped during scalarization.

Most portions of InstCombine properly propagate fast math flags, but
apparently the vector scalarization section was overlooked.

llvm-svn: 262376

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/include/llvm/IR/InstrTypes.h b/llvm/include/llvm/IR/InstrTypes.h
index 5091bb40783..ef86eba8135 100644
--- a/llvm/include/llvm/IR/InstrTypes.h
+++ b/llvm/include/llvm/IR/InstrTypes.h
@@ -386,6 +386,15 @@ public:
   }
 #include "llvm/IR/Instruction.def"
 
+  static BinaryOperator *CreateWithCopiedFlags(BinaryOps Opc,
+                                               Value *V1, Value *V2,
+                                               BinaryOperator *CopyBO,
+                                               const Twine &Name = "") {
+    BinaryOperator *BO = Create(Opc, V1, V2, Name);
+    BO->copyIRFlags(CopyBO);
+    return BO;
+  }
+
   static BinaryOperator *CreateNSW(BinaryOps Opc, Value *V1, Value *V2,
                                    const Twine &Name = "") {
     BinaryOperator *BO = Create(Opc, V1, V2, Name);