[all-commits] [llvm/llvm-project] 3c6ea7: Remove 3DNow! from X86TargetParser. (#99352)

[James Y Knight via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3c6ea7b7168fdb4d4396bcf67ea0d69495a558b8
      https://github.com/llvm/llvm-project/commit/3c6ea7b7168fdb4d4396bcf67ea0d69495a558b8
  Author: James Y Knight <jyknight at google.com>
  Date:   2024-07-20 (Sat, 20 Jul 2024)

  Changed paths:
    M clang/lib/Headers/prfchwintrin.h
    M clang/test/CodeGen/attr-target-x86.c
    M compiler-rt/lib/builtins/cpu_model/x86.c
    M llvm/include/llvm/TargetParser/X86TargetParser.def
    M llvm/lib/TargetParser/X86TargetParser.cpp

  Log Message:
  -----------
  Remove 3DNow! from X86TargetParser. (#99352)

This addresses the spurious inclusion of (now unsupported) target
features '-3dnow' and '-3dnowa' when disabling mmx (when then caused log
output from `clang -mno-mmx`).

It should've been part of PR #96246, but was missed.

Also tweaks the warning in prfchwintrin.h to not recommend the
deprecated mm3dnow.h header.



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