[PATCH] D28897: [PM] Simplify the new PM interface to the loop unroller and expose two factory functions for the two modes the loop unroller is actually used in in-tree: simplified full-unrolling and the entire thing including partial unrolling.

[Chandler Carruth via Phabricator via llvm-commits]

chandlerc created this revision.
Herald added subscribers: mzolotukhin, mcrosier.

I've also wired these up to nice names so you can express both of these
being in a pipeline easily. This is a precursor to actually enabling
these parts of the https://reviews.llvm.org/owners/package/2/ pipeline.

I'm happy to consider alternative names here. I'm not a huge fan of
"simple" but it is what we were using.

Depends on https://reviews.llvm.org/D28848.


https://reviews.llvm.org/D28897

Files:
  include/llvm/Transforms/Scalar/LoopUnrollPass.h
  lib/Passes/PassRegistry.def
  lib/Transforms/Scalar/LoopUnrollPass.cpp
  test/Transforms/LoopUnroll/full-unroll-bad-cost.ll
  test/Transforms/LoopUnroll/full-unroll-crashers.ll
  test/Transforms/LoopUnroll/full-unroll-heuristics-2.ll
  test/Transforms/LoopUnroll/full-unroll-heuristics-cmp.ll
  test/Transforms/LoopUnroll/full-unroll-heuristics-dce.ll
  test/Transforms/LoopUnroll/full-unroll-heuristics-geps.ll
  test/Transforms/LoopUnroll/full-unroll-heuristics-phi-prop.ll
  test/Transforms/LoopUnroll/full-unroll-heuristics.ll
  test/Transforms/LoopUnroll/full-unroll-keep-first-exit.ll

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