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[SVE][CodeGen] Legalisation of EXTRACT_VECTOR_ELT for scalable vectors

Authored by kmclaughlin on Aug 11 2020, 9:59 AM.



This patch changes SplitVecOp_EXTRACT_VECTOR_ELT to work correctly
for scalable vectors and also fixes an a bug in DAGCombiner where
the scalable property is dropped in visitTRUNCATE when attempting
to fold an extract + a truncate.

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Event Timeline

kmclaughlin created this revision.Aug 11 2020, 9:59 AM
kmclaughlin requested review of this revision.Aug 11 2020, 9:59 AM
This revision is now accepted and ready to land.Aug 11 2020, 1:39 PM
This revision was landed with ongoing or failed builds.Aug 13 2020, 4:33 AM
This revision was automatically updated to reflect the committed changes.