[all-commits] [llvm/llvm-project] 8d5bf0: [ms] [llvm-ml] Add support for attempted register ...

[Eric Astor via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 8d5bf0422bc3c8cc7017602375122f7bfea70dab
      https://github.com/llvm/llvm-project/commit/8d5bf0422bc3c8cc7017602375122f7bfea70dab
  Author: Eric Astor <epastor at google.com>
  Date:   2020-02-11 (Tue, 11 Feb 2020)

  Changed paths:
    M llvm/include/llvm/MC/MCParser/MCTargetAsmParser.h
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
    M llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
    M llvm/lib/Target/AVR/AsmParser/AVRAsmParser.cpp
    M llvm/lib/Target/BPF/AsmParser/BPFAsmParser.cpp
    M llvm/lib/Target/Hexagon/AsmParser/HexagonAsmParser.cpp
    M llvm/lib/Target/Lanai/AsmParser/LanaiAsmParser.cpp
    M llvm/lib/Target/MSP430/AsmParser/MSP430AsmParser.cpp
    M llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
    M llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
    M llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
    M llvm/lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
    M llvm/lib/Target/SystemZ/AsmParser/SystemZAsmParser.cpp
    M llvm/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
    M llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp

  Log Message:
  -----------
  [ms] [llvm-ml] Add support for attempted register parsing

Summary:
Add a new method (tryParseRegister) that attempts to parse a register specification.

MASM allows the use of IFDEF <register>, as well as IFDEF <symbol>. To accommodate this, we make it possible to check whether a register specification can be parsed at the current location, without failing the entire parse if it can't.

Reviewers: thakis

Reviewed By: thakis

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73486