[PATCH] D72742: Don't assume promotable integers are zero/sign-extended already in x86-64 ABI.

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri added a comment.

> Sign-extension is not guaranteed by the ABI, and thus the callee cannot assume it.

This is a bit too vague.
Can you quote specific parts of the appropriate standard/document?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D72742/new/

https://reviews.llvm.org/D72742