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[AArch64][GlobalISel] Add isel support for vector G_ICMP and G_ASHR & G_LSR

Authored by aemerson on Apr 8 2019, 6:39 PM.



The selection for G_ICMP is unfortunately not currently importable from SDAG due to the use of custom SDNodes. To support this, this selection method has an opcode table which has been generated by a script, indexed by various instruction properties. Ideally in future we will have a GISel native selection patterns that we can write in tablegen to improve on this.

For selection of some types we also need support for G_ASHR and G_LSR which are generated as a result of legalization. This patch also adds support for them, generating the same code as SelectionDAG currently does.

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Event Timeline

aemerson created this revision.Apr 8 2019, 6:39 PM
paquette accepted this revision.Apr 9 2019, 9:34 AM


This revision is now accepted and ready to land.Apr 9 2019, 9:34 AM
This revision was automatically updated to reflect the committed changes.