[PATCH] D109889: AMDGPU: Lower one copy from SCC early for SelectionDAG

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

> In SelectionDAG path, we are currently using -1/0 when copying from SCC.
> But in GlobalISel path, we are requesting 1/0 when copying from SCC.

Is there a good reason for that difference? Is it related to TargetLowering::setBooleanContents? We always set ZeroOrOneBooleanContent for GCN subtargets.


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  https://reviews.llvm.org/D109889/new/

https://reviews.llvm.org/D109889