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Author SHA1 Message Date
Krzysztof Parzyszek 4719502941 Add more rotate tests, including ORs of rotates 
This is a part of https://reviews.llvm.org/D47735.

llvm-svn: 356683
 2019-03-21 17:14:22 +00:00
Krzysztof Parzyszek 30c42e2ab6 [Hexagon] Add patterns for funnel shifts 
llvm-svn: 349770
 2018-12-20 16:39:20 +00:00
Krzysztof Parzyszek 3d671248ab [SelectionDAG] Provide default expansion for rotates 
Implement default legalization of rotates: either in terms of the rotation
in the opposite direction (if legal), or in terms of shifts and ors.

Implement generating of rotate instructions for Hexagon. Hexagon only
supports rotates by an immediate value, so implement custom lowering of
ROTL/ROTR on Hexagon. If a rotate is not legal, use the default expansion.

Differential Revision: https://reviews.llvm.org/D47725

llvm-svn: 334497
 2018-06-12 12:49:36 +00:00