[all-commits] [llvm/llvm-project] fd6fae: [Driver, CodeGen] Report error when enabling 64-bit...

[Shengchen Kan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fd6faee5b3b5a7c0e5e87aa0b5719a1a48159ea0
      https://github.com/llvm/llvm-project/commit/fd6faee5b3b5a7c0e5e87aa0b5719a1a48159ea0
  Author: Shengchen Kan <shengchen.kan at intel.com>
  Date:   2024-07-31 (Wed, 31 Jul 2024)

  Changed paths:
    M clang/lib/Driver/ToolChains/Arch/X86.cpp
    M clang/test/Driver/x86-target-features.c
    M llvm/lib/Target/X86/X86Subtarget.cpp
    A llvm/test/CodeGen/X86/apx/i386-ndd.ll

  Log Message:
  -----------
  [Driver,CodeGen] Report error when enabling 64-bit-only features on non-64-bit arch (#101151)

In front-end, now we detect for `-mapx-features=/-mapxf` and `-muintr`,
which is aligned with GCC

https://gcc.gnu.org/bugzilla/attachment.cgi?id=58698&action=diff

In backend, we just disable these 64-bit-only features silently, so that
there is no error for
`-march=native -m32` on APX-supported arch.

llvm-issue: https://github.com/llvm/llvm-project/issues/94810
GCC thread: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115978



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