[PATCH] D118603: [DAGCombine] Add simple folds for SSHLSAT/USHLSAT

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:9357
+  if (SDValue V = DAG.simplifyShift(N0, N1))
+    return V;
+
----------------
Do you have any test coverage for undef/poison/outofrangeamt operands - that's mainly what simplifyShift handles?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D118603/new/

https://reviews.llvm.org/D118603