[PATCH] D99075: [ARM] Handle debug instrs in ARM Low Overhead Loop pass

[Victor Campos via Phabricator via llvm-commits]

vhscampos created this revision.
Herald added subscribers: danielkiss, rogfer01, hiraditya, kristof.beyls.
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In function ConvertVPTBlocks(), it is assumed that every instruction
within a vector-predicated block is predicated. This is false for debug
instructions, used by LLVM.

Because of this, an assertion failure is reached when an input contains
debug instructions inside VPT blocks. In non-assert builds, an out of
bounds memory access took place.

The present patch properly covers the case of debug instructions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99075

Files:
  llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp
  llvm/test/CodeGen/Thumb2/LowOverheadLoops/skip-vpt-debug.mir

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