[all-commits] [llvm/llvm-project] d905c7: [XRay][SystemZ] Use stckf for non-clang compilers ...

[Kai Nacke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d905c7e316b941afcef32e28073b3e77c536407c
      https://github.com/llvm/llvm-project/commit/d905c7e316b941afcef32e28073b3e77c536407c
  Author: Kai Nacke <kai.peter.nacke at ibm.com>
  Date:   2025-02-06 (Thu, 06 Feb 2025)

  Changed paths:
    M compiler-rt/lib/xray/xray_tsc.h

  Log Message:
  -----------
  [XRay][SystemZ] Use stckf for non-clang compilers (#125289)

Turns out there are users who use gcc to compile compiler-rt. Using the
clang-specific builtin function `__builtin_readcyclecounter()` does not
work in this case.
Solution is to use inline assembly using the stckf instruction in case
the compiler is not clang.



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