[PATCH] D110660: [WIP][AsmParser] handle .align 0 per MCAsmInfo

[Nick Desaulniers via Phabricator via llvm-commits]

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While .align 0 may be converted for .align 1 for x86_64 elf, on THUMB2
it's converted to .align 2 (4B alignment).

(WIP: this sets the correct alignment, but doesn't yet insert the
correct amount of NOPs for padding...)

pr/51929.
Link: https://github.com/ClangBuiltLinux/linux/issues/1447


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D110660

Files:
  llvm/include/llvm/MC/MCAsmInfo.h
  llvm/lib/MC/MCAsmInfo.cpp
  llvm/lib/MC/MCParser/AsmParser.cpp
  llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
  llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
  llvm/test/MC/ARM/thumb-text-align0.s

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