[PATCH] D72844: AMDGPU: Move permlane discard vdst_in optimization

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec accepted this revision.
rampitec added a comment.
This revision is now accepted and ready to land.

LGTM



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Comment at: llvm/lib/Target/AMDGPU/VOP3Instructions.td:682
+
+  def : PermlaneDiscardVDstIn<
+    BoundControlOrFetchInvalidPermlane<int_amdgcn_permlane16>,
----------------
arsenm wrote:
> rampitec wrote:
> > Don't you need added complexity here? The complexity of both patterns looks the same.
> No, I think the custom predicate boosts the complexity score
Right, found it here: https://github.com/llvm-mirror/llvm/blob/master/utils/TableGen/CodeGenDAGPatterns.cpp#L1357


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