[all-commits] [llvm/llvm-project] a4d854: [HIP] fix stack marking for -fgpu-rdc (#72782)

[Yaxun (Sam) Liu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a4d85490e029e797d22881b37d476c2050d0d6a2
      https://github.com/llvm/llvm-project/commit/a4d85490e029e797d22881b37d476c2050d0d6a2
  Author: Yaxun (Sam) Liu <yaxun.liu at amd.com>
  Date:   2023-12-01 (Fri, 01 Dec 2023)

  Changed paths:
    M clang/lib/Driver/ToolChains/HIPUtility.cpp
    M clang/test/Driver/hip-toolchain-rdc.hip

  Log Message:
  -----------
  [HIP] fix stack marking for -fgpu-rdc (#72782)

HIP toolchain uses llvm-mc to generate a host object embedding device
binary for -fgpu-rdc. Due to lack of .note.GNU-stack section, the
generated relocatable has executable stack marking, which disables
protection from executable stack for any HIP programs compiled with
-fgpu-rdc.

This patch adds .note.GNU-stack section to the input to llvm-mc to fix
the executable stack marking.

Fixes: https://github.com/llvm/llvm-project/issues/71711