[all-commits] [llvm/llvm-project] 631362: [AsmParser][SystemZ][z/OS] Support for emitting la...

[Anirudh Prasad via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 631362665c3b3271736fee070f6b553c099250d8
      https://github.com/llvm/llvm-project/commit/631362665c3b3271736fee070f6b553c099250d8
  Author: Anirudh Prasad <anirudh_prasad at hotmail.com>
  Date:   2021-06-24 (Thu, 24 Jun 2021)

  Changed paths:
    M llvm/include/llvm/MC/MCAsmInfo.h
    M llvm/lib/MC/MCParser/AsmParser.cpp
    M llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
    M llvm/unittests/MC/SystemZ/SystemZAsmLexerTest.cpp

  Log Message:
  -----------
  [AsmParser][SystemZ][z/OS] Support for emitting labels in upper case

- Currently, the emitting of labels in the parsePrimaryExpr function is case independent. It just takes the identifier and emits it.
- However, for HLASM the emitting of labels is case independent. We are emitting them in the upper case only, to enforce case independency. So we need to ensure that at the time of parsing the label we are emitting the upper case (in `parseAsHLASMLabel`), but also, when we are processing a PC-relative relocatable expression, we need to ensure we emit it in upper case (in `parsePrimaryExpr`)
- To achieve this a new MCAsmInfo attribute has been introduced which corresponding targets can override if needed.

Reviewed By: abhina.sreeskantharajan, uweigand

Differential Revision: https://reviews.llvm.org/D104715