[all-commits] [llvm/llvm-project] 7155c1: [NVPTX] Allow compiling LLVM-IR without `-march` s...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7155c1ef658b66132f15bf1406e84e68eed3358f
      https://github.com/llvm/llvm-project/commit/7155c1ef658b66132f15bf1406e84e68eed3358f
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2024-01-30 (Tue, 30 Jan 2024)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticDriverKinds.td
    M clang/lib/Basic/Targets/NVPTX.cpp
    M clang/lib/Basic/Targets/NVPTX.h
    M clang/lib/Driver/ToolChains/Cuda.cpp
    M clang/test/Driver/cuda-cross-compiling.c
    M clang/test/Preprocessor/predefined-arch-macros.c

  Log Message:
  -----------
  [NVPTX] Allow compiling LLVM-IR without `-march` set (#79873)

Summary:
The NVPTX tools require an architecture to be used, however if we are
creating generic LLVM-IR we should be able to leave it unspecified. This
will result in the `target-cpu` attributes not being set on the
functions so it can be changed when linked into code. This allows the
standalone `--target=nvptx64-nvidia-cuda` toolchain to create LLVM-IR
simmilar to how CUDA's deviceRTL looks from C/C++