[PATCH] D109385: [X86] Disable muloti4 libcalls for x86-64.

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers added a subscriber: rengolin.
nickdesaulniers added a comment.

The optimal would be IFF we know we are linking against a compiler runtime, then we really really would like to generate the libcall.  @rengolin summarizes this best here: https://github.com/ClangBuiltLinux/linux/issues/1438#issuecomment-907689836.  That said, I'm worried about how can we know whether that's the case or not, and can we still know under LTO?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109385/new/

https://reviews.llvm.org/D109385