[PATCH] D48649: [ARM] [Assembler] Support negative immediates: cover few missing cases

[Volodymyr Turanskyy via Phabricator via llvm-commits]

voltur01 created this revision.
voltur01 added reviewers: olista01, john.brawn.
Herald added a reviewer: javed.absar.
Herald added subscribers: llvm-commits, chrib, kristof.beyls.

Support for negative immediates was implemented in 
https://reviews.llvm.org/rL298380, however few instruction options were missing.

This change adds negative immediates support and respective tests 
for the following:

  ADD
  ADDS
  ADDS.W
  AND.W
  ANDS
  BIC.W
  BICS
  BICS.W
  SUB
  SUBS
  SUBS.W


Repository:
  rL LLVM

https://reviews.llvm.org/D48649

Files:
  lib/Target/ARM/ARMInstrThumb2.td
  lib/Target/ARM/AsmParser/ARMAsmParser.cpp
  test/MC/ARM/negative-immediates.s

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