[PATCH] D52854: Use is.constant intrinsic for __builtin_constant_p

[Bill Wendling via Phabricator via cfe-commits]

void added a comment.

This is related to https://reviews.llvm.org/D4276, which I believe has been deleted. However, I believe that a modified version of that patch will work.

The idea of this patch is *not* to be fully compatible with gcc's implementation, but to expand clang's implementation of `__builtin_constant_p` without breaking existing code.

This has been tested by successfully building (and running) the Linux kernel for both ARM and X86.


Repository:
  rC Clang

https://reviews.llvm.org/D52854