[PATCH] D21291: [SimplifyCFG] Range reduce switches

[James Molloy via llvm-commits]

jmolloy updated this revision to Diff 60973.
jmolloy added a comment.

Hi Eli,

That rotate trick is, quite simply, brilliant.

New version uses SelectionDAG - I'll factor some of the machinery out at a later date when I implement this for lookup table formation too.

All comments should now be addressed.

Cheers,

James


Repository:
  rL LLVM

http://reviews.llvm.org/D21291

Files:
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
  test/CodeGen/ARM/rangereduce-switch.ll
  test/CodeGen/X86/switch-edge-weight.ll

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