[PATCH] D68149: LiveIntervals: Fix handleMoveUp with subreg def moving across a def

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: qcolombet, MatzeB, tpr.
Herald added subscribers: nhaehnle, wdng, jvesely.

If a subregister def was moved across another subregister def and
another use, the main range was not correctly updated. The end point
of the moved interval ended too early and missed the use from theh
other lanes in the subreg def.


https://reviews.llvm.org/D68149

Files:
  lib/CodeGen/LiveIntervals.cpp
  test/CodeGen/AMDGPU/sched-handleMoveUp-subreg-def-across-subreg-def.mir
  unittests/MI/LiveIntervalTest.cpp

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