diff options
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 82e70073e8..65548aff04 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -4539,6 +4539,10 @@ static bool isEliminableCastOfCast(const Type *SrcTy, const Type *MidTy, SrcTy->getPrimitiveSize() < MidTy->getPrimitiveSize()) return true; + // Packed type conversions don't modify bits. + if (isa<PackedType>(SrcTy) && isa<PackedType>(MidTy) &&isa<PackedType>(DstTy)) + return true; + return false; } |