[all-commits] [llvm/llvm-project] a2a280: [OpenMP] Fix __builtin_return_address calls for SP...

[Rainer Orth via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a2a280e58c95f76185ab93c1b73cb1608318b699
      https://github.com/llvm/llvm-project/commit/a2a280e58c95f76185ab93c1b73cb1608318b699
  Author: Rainer Orth <ro at gcc.gnu.org>
  Date:   2025-05-14 (Wed, 14 May 2025)

  Changed paths:
    M openmp/runtime/src/ompt-internal.h
    M openmp/runtime/src/ompt-specific.h

  Log Message:
  -----------
  [OpenMP] Fix __builtin_return_address calls for SPARC (#138520)

`libomp` uses `__builtin_return_address` in two places. However, on some
targets those calls need to wrapped in `___builtin_extract_return_addr`
to get at the actual return address. SPARC is among those targets and
the only one where `clang` actually implements this, cf. [[clang][Sparc]
Fix __builtin_extract_return_addr
etc.](https://reviews.llvm.org/D91607). `compiler-rt` needed the same
adjustment, cf. [[sanitizer_common][test] Enable tests on
SPARC](https://reviews.llvm.org/D91608). On other targets, this is a
no-op. However, there are more targets that have the same issue and
`gcc`, unlike `clang`, correctly implements it, so there might be issues
when building `libomp` with `gcc`.

This patch adds the necessary calls.

Tested on `sparcv9-sun-solaris2.11`, `sparc64-unknown-linux-gnu`,
`amd64-pc-solaris2.11`, and `x86_64-pc-linux-gnu`.



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