[all-commits] [llvm/llvm-project] 765301: [AMDGPU] Always pass `-mcpu` to the `lld` linker

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 765301183f58a28af65b112db44218dc224b9fec
      https://github.com/llvm/llvm-project/commit/765301183f58a28af65b112db44218dc224b9fec
  Author: Joseph Huber <jhuber6 at vols.utk.edu>
  Date:   2023-06-28 (Wed, 28 Jun 2023)

  Changed paths:
    M clang/lib/Driver/ToolChains/AMDGPU.cpp
    M clang/test/Driver/amdgpu-toolchain.c

  Log Message:
  -----------
  [AMDGPU] Always pass `-mcpu` to the `lld` linker

Currently, AMDGPU more or less only supports linking with LTO. If the
user does not either pass `-flto` or `-Wl,-plugin-opt=mcpu=` manually
linking will fail because the architecture's aren't compatible. THis
patch simply passes `-mcpu` by default if it was specified. Should be a
no-op if it's not actually used.

Reviewed By: yaxunl

Differential Revision: https://reviews.llvm.org/D153909