[PATCH] D82370: [AMDGPU] Rework SCC copy

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:674-675
+
+    // We only care about the low bit here.
+    if (AMDGPU::SReg_64RegClass.contains(SrcReg)) {
+      SrcReg = RI.getSubReg(SrcReg, AMDGPU::sub0);
----------------
I think you should never end up in this situation to begin with. Maybe this should be a verifier error instead?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D82370/new/

https://reviews.llvm.org/D82370