[all-commits] [llvm/llvm-project] 73ac95: [RISCV][compiler-rt] Small fixes for __riscv_featu...

[Piyou Chen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 73ac9536268f21149e29601da31e3415725b0a17
      https://github.com/llvm/llvm-project/commit/73ac9536268f21149e29601da31e3415725b0a17
  Author: Piyou Chen <piyou.chen at sifive.com>
  Date:   2024-07-24 (Wed, 24 Jul 2024)

  Changed paths:
    M compiler-rt/lib/builtins/CMakeLists.txt
    A compiler-rt/lib/builtins/cpu_model/riscv.c
    R compiler-rt/lib/builtins/riscv/feature_bits.c

  Log Message:
  -----------
  [RISCV][compiler-rt] Small fixes for __riscv_feature_bits (#100158)

Changes included:

- Adding CONSTRUCTOR_ATTRIBUTE so that the static data is setup early on
in process lifetime. This is required by gcc docs for
__builtin_cpu_supports which we hope to implement in terms of this.
- Move the length initialization outside of the #if defined(linux) block
so that the length field always reflects the size of the structures even
if non of the feature bits are non-zero.
- Change the __riscv_vendor_feature_bits.length field to match the
length of the actual structure.

Note: Copy from https://github.com/llvm/llvm-project/pull/99958

---------

Co-authored-by: Philip Reames <preames at rivosinc.com>



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