[all-commits] [llvm/llvm-project] 675278: [HIP] Do not use llvm-link/opt/llc for -fgpu-rdc

[Yaxun (Sam) Liu via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 6752786d657ae13ccccdf93e1fa45df5277052ab
      https://github.com/llvm/llvm-project/commit/6752786d657ae13ccccdf93e1fa45df5277052ab
  Author: Yaxun (Sam) Liu <yaxun.liu at amd.com>
  Date:   2020-06-15 (Mon, 15 Jun 2020)

  Changed paths:
    M clang/lib/Driver/Driver.cpp
    M clang/lib/Driver/ToolChains/AMDGPU.h
    M clang/lib/Driver/ToolChains/HIP.cpp
    M clang/lib/Driver/ToolChains/HIP.h
    M clang/test/Driver/amdgpu-toolchain.c
    M clang/test/Driver/hip-device-compile.hip
    A clang/test/Driver/hip-link-save-temps.hip
    M clang/test/Driver/hip-phases.hip
    M clang/test/Driver/hip-rdc-device-only.hip
    M clang/test/Driver/hip-save-temps.hip
    M clang/test/Driver/hip-toolchain-no-rdc.hip
    A clang/test/Driver/hip-toolchain-rdc-separate.hip
    M clang/test/Driver/hip-toolchain-rdc.hip

  Log Message:
  -----------
  [HIP] Do not use llvm-link/opt/llc for -fgpu-rdc

This patch is a follow up on https://reviews.llvm.org/D81627.

In addition to default -fno-gpu-rdc case, this patches let
HIP toolchain not use llvm-link/opt/llc to link device code
for -fgpu-rdc case. Instead, uses standard lto.

This will eliminate some redundant optimizations and speed
up the compilation/linking.

Differential Revision: https://reviews.llvm.org/D81861