[PATCH] D121491: [AMDGPU] Restrict machine copy propagation from creating unaligned classes

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:4774
+  const TargetRegisterClass *RC = RI.getRegClass(RCID);
+  if (RC && ST.needsAlignedVGPRs()) {
+    unsigned Size = RI.getRegSizeInBits(*RC);
----------------
Why can't you just select the aligned class above to begin with?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121491/new/

https://reviews.llvm.org/D121491