[PATCH] D34723: [AMDGPU] truncate left shift

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: lib/CodeGen/SelectionDAG/DAGCombiner.cpp:8215
+    KnownBits Known;
+    DAG.computeKnownBits(Amt, Known);
+    unsigned Size = VT.getScalarSizeInBits();
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Will this regress the constant vector case?


https://reviews.llvm.org/D34723