[PATCH] D13556: AMDGPU/SI: Eliminate tbuffer_store_* instruction with an undef value

[Matt Arsenault via llvm-commits]

arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

LGTM, although I think this should be done in an IR pass though


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Comment at: lib/Target/AMDGPU/SIISelLowering.cpp:2015
@@ +2014,3 @@
+    // Delete undef stores
+    if (N->getOperand(2).getOpcode() == ISD::UNDEF)
+      return N->getOperand(0);
----------------
You can use isUndef()


http://reviews.llvm.org/D13556