[PATCH] D106471: [DAGCombiner][RISCV][AMDGPU] Call SimplifyDemandedBits at the end of visitMULHU to enable known bits contant folding.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:4582
+  // We don't have demanded bits support for MULHU so this just enables constant
+  // folding based on known bits.
+  if (SimplifyDemandedBits(SDValue(N, 0)))
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Out of interest, do we need MULHU support in SimplifyDemandedBits?


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  https://reviews.llvm.org/D106471/new/

https://reviews.llvm.org/D106471