[PATCH] D54882: [AMDGPU] Add sdwa support for ADD|SUB U64 decomposed Pseudos

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added inline comments.


================
Comment at: lib/Target/AMDGPU/SIPeepholeSDWA.cpp:913
+    return;
+  Liveness = MBB.computeRegisterLiveness(TRI, AMDGPU::VCC, MISucc, 25);
+  if (Liveness != MachineBasicBlock::LQR_Dead)
----------------
The fact ut dead at the MISucc does not give anything. It can be defined and killed in between of two instructions.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D54882/new/

https://reviews.llvm.org/D54882