[all-commits] [llvm/llvm-project] 0bbf3d: [Clang][LoongArch] Add GPR alias handling without ...

[Lu Weining via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0bbf3ddf5fea86e0eb0726142827e175aadaf53b
      https://github.com/llvm/llvm-project/commit/0bbf3ddf5fea86e0eb0726142827e175aadaf53b
  Author: Weining Lu <luweining at loongson.cn>
  Date:   2023-05-13 (Sat, 13 May 2023)

  Changed paths:
    M clang/lib/Basic/Targets/LoongArch.cpp
    M clang/test/CodeGen/LoongArch/inline-asm-gcc-regs-error.c
    M clang/test/CodeGen/LoongArch/inline-asm-gcc-regs.c

  Log Message:
  -----------
  [Clang][LoongArch] Add GPR alias handling without `$` prefix

Currenlty there is a mismatch between LoongArch gcc and clang about
handling register name in inlineasm, i.e. gcc allows both `$`-prefixed
and non-prefiexed names for GPRs while clang only allows `$`-prefixed
one. This patch fixes this mismatch by adding non-prefixed GPR names
in clang.

Take `$r4` for example. With this patch, clang accepts `$r4`, `r4`,
`$a0` and `a0` like what gcc does.

Reviewed By: xen0n

Differential Revision: https://reviews.llvm.org/D136436