[all-commits] [llvm/llvm-project] b7279e: [SystemZ][XRay] Make xray work with gcc (#126154)

[Kai Nacke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b7279ed5b3ae3e7b0fd61e0f08c86fb1958f0b6f
      https://github.com/llvm/llvm-project/commit/b7279ed5b3ae3e7b0fd61e0f08c86fb1958f0b6f
  Author: Kai Nacke <kai.peter.nacke at ibm.com>
  Date:   2025-02-06 (Thu, 06 Feb 2025)

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

  Log Message:
  -----------
  [SystemZ][XRay] Make xray work with gcc (#126154)

It seems that depending on the platform, gcc acceptts or does not accept
`-mvx` without specifying an architecture actually having vector
instructions. The solution which seems to work across different versions
of gcc and clang is to specify the least architecture which has vector
instructions.

In addition, initialization of the unused variable CPU prevents a
compiler warning from gcc.



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