[PATCH] D149123: [AArch64][InlineAsm]Add Clang support for flag output constraints

[Mingming Liu via Phabricator via cfe-commits]

mingmingl created this revision.
Herald added subscribers: mstorsjo, kristof.beyls.
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mingmingl requested review of this revision.
Herald added a project: clang.
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Before:

- Clang emits 'invalid output constraint error' https://gcc.godbolt.org/z/jWKKr1vrv

After:

- Clang validates and parses flag output constraints to generate LLVM IR.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149123

Files:
  clang/lib/Basic/Targets/AArch64.cpp
  clang/lib/Basic/Targets/AArch64.h
  clang/test/CodeGen/inline-asm-aarch64-flag-output.c
  clang/test/Preprocessor/aarch64_asm_flag_output.c
  clang/test/Preprocessor/init-aarch64.c
  clang/test/Preprocessor/predefined-win-macros.c

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