[PATCH] D48705: [CodeGenPrepare] Reverse LICM pass for shift and rotate patterns.

[Tomasz Krupa via Phabricator via llvm-commits]

tkrupa created this revision.
tkrupa added a reviewer: craig.topper.
Herald added a subscriber: llvm-commits.

This patch fetches back parts of shift and rotate patterns which were hoisted out of the loop in LICM pass (which prevented the patterns from combining). This resolves https://bugs.llvm.org/show_bug.cgi?id=37417 and enables https://reviews.llvm.org/D46946 and https://reviews.llvm.org/D47019 to proceed.


Repository:
  rL LLVM

https://reviews.llvm.org/D48705

Files:
  lib/CodeGen/CodeGenPrepare.cpp
  test/Transforms/CodeGenPrepare/reverse-licm.ll

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