[PATCH] D30398: [ARM] Diagnose PC-writing instructions in IT blocks

[Oliver Stannard via Phabricator via llvm-commits]

olista01 created this revision.
Herald added a subscriber: aemerson.

In Thumb2, instructions which write to the PC are UNPREDICTABLE if they are in an IT block but not the last instruction in the block.

      

Previously, we only diagnosed this for LDM instructions, this patch extends the diagnostic to cover all of the relevant instructions.


Repository:
  rL LLVM

https://reviews.llvm.org/D30398

Files:
  lib/Target/ARM/AsmParser/ARMAsmParser.cpp
  test/MC/ARM/arm-thumb-trustzone.s
  test/MC/ARM/basic-thumb2-instructions.s
  test/MC/ARM/unpred-control-flow-in-it-block.s

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