[PATCH] D34723: [AMDGPU] truncate left shift
Matt Arsenault via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jun 27 18:56:42 PDT 2017
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
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