[PATCH] D48246: [AMDGPU] setcc (select cc, CT, CF), CF, eq | ne -> xor cc, -1 | cc

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec created this revision.
rampitec added a reviewer: msearles.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl, arsenm.

This is the common case in the BE when we serialize condition and then rematerialize it. Use either original or inverted condition.


https://reviews.llvm.org/D48246

Files:
  lib/Target/AMDGPU/SIISelLowering.cpp
  test/CodeGen/AMDGPU/dagcombine-setcc-select.ll

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