[PATCH] D89482: ScheduleDAGInstrs: Skip debug instructions at end of scheduling region

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: rampitec, foad, kerbowa, steven.zhang, greened, vpykhtin.
Herald added subscribers: hiraditya, nhaehnle, jvesely, MatzeB.
Herald added a project: LLVM.
arsenm requested review of this revision.
Herald added a subscriber: wdng.

If the end instruction of the scheduling region was a DBG_VALUE, the
uses of the debug instruction were tracked as if they were real
uses. This would then hit the deadDefHasNoUse assertion in
addVRegDefDeps if the only use was the debug instruction.


https://reviews.llvm.org/D89482

Files:
  llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
  llvm/test/CodeGen/AMDGPU/dbg-value-ends-sched-region.mir

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D89482.298403.patch
Type: text/x-patch
Size: 7746 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20201015/806a7e4c/attachment.bin>