[all-commits] [llvm/llvm-project] c7572a: [X86][AVX10] Re-target mavx10.1 and emit warning f...

[Phoebe Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c7572ae213d215d54a10c8a03db75cc01f6291bd
      https://github.com/llvm/llvm-project/commit/c7572ae213d215d54a10c8a03db75cc01f6291bd
  Author: Phoebe Wang <phoebe.wang at intel.com>
  Date:   2025-03-31 (Mon, 31 Mar 2025)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Driver/Options.td
    M clang/lib/Driver/ToolChains/Arch/X86.cpp
    M clang/test/Driver/x86-target-features.c

  Log Message:
  -----------
  [X86][AVX10] Re-target mavx10.1 and emit warning for mavx10.x-256/512 and m[no-]evex512 (#132542)

The 256-bit maximum vector register size control was removed from AVX10
whitepaper, ref: https://cdrdv2.intel.com/v1/dl/getContent/784343

- Re-target m[no-]avx10.1 to enable AVX10.1 with 512-bit maximum vector
register size;
- Emit warning for mavx10.x-256, noting AVX10/256 is not supported;
- Emit warning for mavx10.x-512, noting to use m[no-]avx10.x instead;
- Emit warning for m[no-]evex512, noting AVX10/256 is not supported;

This patch only changes Clang driver behavior. The features
avx10.x-256/512 keep unchanged and will be removed in the next release.



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