[PATCH] D69897: Add #pragma clang loop vectorize_assume_alignment(n)

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri added a comment.

To reword, if `vectorize_assume_alignment(32)` is *NOT* lowered
via `CodeGenFunction::EmitAlignmentAssumption()` in clang frontend,
but lowered into `LoopAttributes::VectorizeAssumeAlignment`,
then once  the alignment that was specified does not match reality,
there will be a miscompile instead of an UBSan error.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D69897/new/

https://reviews.llvm.org/D69897