[all-commits] [llvm/llvm-project] 61fee6: [Clang][Driver] Handle LoongArch multiarch tuples

[WÁNG Xuěruì via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 61fee67cd77aedcb6f172ee0cfb0a0e5fa3c9c0d
      https://github.com/llvm/llvm-project/commit/61fee67cd77aedcb6f172ee0cfb0a0e5fa3c9c0d
  Author: WANG Xuerui <git at xen0n.name>
  Date:   2023-04-24 (Mon, 24 Apr 2023)

  Changed paths:
    M clang/lib/Driver/ToolChains/Arch/LoongArch.cpp
    M clang/lib/Driver/ToolChains/Linux.cpp
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/include/c++/13/backward/.keep
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/include/loongarch64-linux-gnu/c++/.keep
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/lib/gcc/loongarch64-linux-gnu/13/crtbegin.o
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/lib/gcc/loongarch64-linux-gnu/13/crtend.o
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/lib/gcc/loongarch64-linux-gnu/13/include/.keep
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/lib/loongarch64-linux-gnu/crt1.o
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/lib/loongarch64-linux-gnu/crti.o
    A clang/test/Driver/Inputs/debian_loong64_tree/usr/lib/loongarch64-linux-gnu/crtn.o
    M clang/test/Driver/linux-header-search.cpp
    M clang/test/Driver/linux-ld.c
    M clang/test/Driver/loongarch-abi.c

  Log Message:
  -----------
  [Clang][Driver] Handle LoongArch multiarch tuples

This follows v1.00 of the [[ https://loongson.github.io/LoongArch-Documentation/LoongArch-toolchain-conventions-EN.html | LoongArch Toolchain Conventions ]],
but notably with [[ https://github.com/loongson/LoongArch-Documentation/pull/80 | this patch ]]
applied (a proper version bump to v2.00 was not done, so it is
indistinguishable from the "original" but now incompatible v1.00
otherwise).

Only `loongarch64` is implemented in `Linux::getMultiarchTriple`
because support for LA32 and ILP32* ABIs are incomplete right now.

The Debian sysroot layout is based on Han Gao's recent porting effort,
specifically the ghcr.io/rabenda/beige:loong64-v23-preview-20230330
container image.

Reviewed By: SixWeining

Differential Revision: https://reviews.llvm.org/D142688