llvm-project

0663710a - [X86] narrowBitOpRMW/combineTruncate - don't retain pointer info for unknown offset load/stores (#166752)

[X86] narrowBitOpRMW/combineTruncate - don't retain pointer info for unknown offset load/stores (#166752) #166337 replaces large (illegal type) loads/stores with a smaller i32 load/store based off the demanded shifted bits. As these shifts are non-constant we can't regenerate the PointerInfo data with a fixed offset, so we need to discard the data entirely. Fixes #166744 - post-ra has to reconstruct dependencies after the chains have been stripped and uses pointer info instead - which resulted in some loads being rescheduled earlier than the dependent store as it was thought they didn't alias