[PATCH] D55747: [SelectionDAGBuilder] Enable funnel shift building to custom rotates

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: spatel, efriedma, atanasyan, hfinkel, uweigand, kparzysz, echristo, arsenm, t.p.northover, tra, asb, craig.topper.
Herald added a subscriber: wdng.

This patch enables funnel shift -> rotate building for all ROTL/ROTR custom/legal operations.

AFAICT X86 was the last target that was missing modulo support (PR38243), but I've tried to CC stakeholders for every target that has ROTL/ROTR custom handling for their final OK.


Repository:
  rL LLVM

https://reviews.llvm.org/D55747

Files:
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  test/CodeGen/X86/funnel-shift-rot.ll

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