[PATCH] D48558: [AMDGPU] fix for register coalescer

[Daniil Fukalov via Phabricator via llvm-commits]

dfukalov created this revision.
dfukalov added a reviewer: MatzeB.
dfukalov added a project: AMDGPU.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl, qcolombet.

Added ability to return from joinSubRegRanges() in case of mapping was changed after check in joinVirtRegs()


Repository:
  rL LLVM

https://reviews.llvm.org/D48558

Files:
  include/llvm/CodeGen/LiveInterval.h
  lib/CodeGen/LiveInterval.cpp
  lib/CodeGen/LiveRangeCalc.cpp
  lib/CodeGen/RegisterCoalescer.cpp
  lib/CodeGen/SplitKit.cpp
  test/CodeGen/AMDGPU/regcoal-subrange-join-crash.ll

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