[PATCH] D34300: [AMDGPU] simplify add x, *ext (setcc) => addc|subb x, 0, setcc

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added inline comments.


================
Comment at: lib/Target/AMDGPU/SIISelLowering.cpp:473
   }
 
+  setTargetDAGCombine(ISD::ADD);
----------------
arsenm wrote:
> ADDCARRY/SUBCARRY should be marked as legal so more combines work on them
Done, but I do not see any visible difference.


Repository:
  rL LLVM

https://reviews.llvm.org/D34300