4d7880129b
Summary: The changes made in https://github.com/llvm/llvm-project/pull/156057 allows the alignment value to be increased. We assert effectively infinite alignment when the pointer argument is invalid / null. The problem is that for whatever reason the masked load / store functions use i32 for their alignment value which means this gets truncated to zero. Add a special check for this, long term we probably want to just remove this argument entirely.