[PATCH] D93548: [AMDGPU][MC][NFC] Parser refactoring

[Dmitry Preobrazhensky via Phabricator via llvm-commits]

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Minimized use of Parser.Lex() by using higher-level parse functions.
For example, a commonly used pattern

  if (getLexer().isNot(Tok)) { return err; } Parser.Lex();

may be replaced with the following code:

  if (!trySkipToken(Tok)) { return err; }


https://reviews.llvm.org/D93548

Files:
  llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp

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