[PATCH] D34391: [RegisterCoalescer] Fix for SubRange join unreachable

[David Stuttard via Phabricator via llvm-commits]

dstuttard updated this revision to Diff 103439.
dstuttard added a comment.

Added in mising check on RmValNo for null


https://reviews.llvm.org/D34391

Files:
  lib/CodeGen/RegisterCoalescer.cpp
  test/CodeGen/AMDGPU/regcoal-subrange-join.ll

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