[PATCH] D88712: [CGBuiltin] Respect asm labels and redefine_extname for builtins with specialized emitting

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

In D88712#2411841 <https://reviews.llvm.org/D88712#2411841>, @venkataramanan.kumar.llvm wrote:

> 

For your example:

  extern double log (double) asm ("" "log_finite") __attribute__ ((nothrow));
  
  double mylog (double d) { return log(d); }

The intention is to emit `log_finite`, no matter the `-ffast-math`. Both GCC and Clang (after this patch) emit `jmp log_finite`.

The previous behavior (according to your comment, with an older glibc) was undesired. So I think the right suggestion is to upgrade glibc.


Repository:
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  https://reviews.llvm.org/D88712/new/

https://reviews.llvm.org/D88712