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Commit 7ae9419d authored by Simon Pilgrim's avatar Simon Pilgrim
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[DAGCombiner] Add ComputeNumSignBits vector demanded elements support to ASHR... 

[DAGCombiner] Add ComputeNumSignBits vector demanded elements support to ASHR and INSERT_VECTOR_ELT (reapplied)

Reapplied r299221 after fix for nondeterminism in ThinLTO builder (rL301599), with extra check for implicit truncation of inserted element.

llvm-svn: 301644
parent baa9030d
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