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| author | Tim Renouf <tpr.llvm@botech.co.uk> | 2018-05-27 17:26:11 +0000 |
|---|---|---|
| committer | Tim Renouf <tpr.llvm@botech.co.uk> | 2018-05-27 17:26:11 +0000 |
| commit | 364edcd2e532a83a25223aeed778bf7a79b9c038 (patch) | |
| tree | 432fe86918b6bcc2be7d0436cf3622744bf2fe3f /llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp | |
| parent | 3c6595d65dec1df7db1016366ef0c0e34686c1c0 (diff) | |
| download | bcm5719-llvm-364edcd2e532a83a25223aeed778bf7a79b9c038.tar.gz bcm5719-llvm-364edcd2e532a83a25223aeed778bf7a79b9c038.zip | |
[AMDGPU] Fixed WWM bug in block otherwise entirely in WQM
Summary:
For a block with WQM on entry and exit and containing no exact mode
code, but containing some WWM code, the WQM pass forgot to process the
block at all and so did not insert code to enter and leave WWM.
This commit fixes that.
Subscribers: arsenm, kzhuravl, wdng, nhaehnle, yaxunl, dstuttard, t-tye, llvm-commits
Differential Revision: https://reviews.llvm.org/D47027
Change-Id: I044792eead1293bed4203fb26ce75f47878afeb6
llvm-svn: 333362
Diffstat (limited to 'llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp b/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp index eb99683a28a..4935a914a99 100644 --- a/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp +++ b/llvm/lib/Target/AMDGPU/SIWholeQuadMode.cpp @@ -453,6 +453,11 @@ void SIWholeQuadMode::propagateInstruction(MachineInstr &MI, if (II.Needs != 0) markInstructionUses(MI, II.Needs, Worklist); + + // Ensure we process a block containing WWM, even if it does not require any + // WQM transitions. + if (II.Needs & StateWWM) + BI.Needs |= StateWWM; } void SIWholeQuadMode::propagateBlock(MachineBasicBlock &MBB, |
