[PATCH] D117450: [LoopInterchange] Support loop interchange with floating point reductions

[Congzhe Cao via Phabricator via llvm-commits]

congzhe created this revision.
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Enabled loop interchang support for floating point reductions if fastmath is enabled.

Previously when we encouter a floating point PHI node in the outer loop exit block, we bailed out since we could not detect floating point reductions in the early days. Now we remove this limiation since we are able to detect floating point reductions.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D117450

Files:
  llvm/lib/Transforms/Scalar/LoopInterchange.cpp
  llvm/test/Transforms/LoopInterchange/lcssa.ll
  llvm/test/Transforms/LoopInterchange/reductions-across-inner-and-outer-loop.ll

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