[PATCH] D41723: Introduce the "retpoline" x86 mitigation technique for variant #2 of the speculative execution vulnerabilities disclosed today, specifically identified by CVE-2017-5715, "Branch Target Injection", and is one of the two halves to Spectre..

[Sam Kellett via Phabricator via llvm-commits]

samkellett added a comment.

@chandlerc is MacOS support omitted intentionally (ie. not implemented yet)? When I try using the `-mretpoline` flag on High Sierra I get the following:

  fatal error: error in backend: MachO doesn't support COMDATs, '__llvm_retpoline_r11' cannot be lowered.


Repository:
  rLLD LLVM Linker

https://reviews.llvm.org/D41723