[PATCH] D102111: [AMDGPU] Update SCC defs to VCC when uses are changed to VCC

Thu May 13 18:22:31 PDT 2021

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

This isn't great but I also don't think it's worth putting real effort into improving SIFixSGPRCopies at this point

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Comment at: llvm/test/CodeGen/AMDGPU/urem-change-scc-to-scc.ll:12
+  %0 = load i64, i64* undef, align 8
+  %rem = urem i64 %0, 2147483563
+  store i64 %rem, i64* undef, align 8
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This isn't particularly enlightening. Something in the giant urem expansion triggered this. Can you come up with some IR approximating the situation in the middle?

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https://reviews.llvm.org/D102111