[PATCH] D79716: [CodeGen] Fix bug in inline asm reserved register detection

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

We can't reasonably check whether the argument is undef; among other issues, it completely destroys the meaning of "undef", and the argument probably won't be undef at -O0.

If we want to do something here, we need to resolve it in clang somehow, so we aren't passing an argument at all.

(I think gcc prints an error for this case?)


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D79716/new/

https://reviews.llvm.org/D79716