FreddyLeaf wrote: > Should we add folding in X86InstrFMA3Info.cpp? yes, addressed in [b9e35f0](https://github.com/llvm/llvm-project/pull/101603/commits/b9e35f050d6319ebd8da3c0f4cf5399dd03b3915) https://github.com/llvm/llvm-project/pull/101603