[PATCH] D13363: [DeadStoreElimination] Add support for DSE across blocks

[Ivan Baev via llvm-commits]

ivanbaev updated the summary for this revision.
ivanbaev updated this revision to Diff 37712.
ivanbaev added a comment.

The new version now handles a redundant store in the if-block in if-then-else - based on a suggestion by Mitch. We use SafeBlocks set, which is initialized and updated in  DSE::HandleNonLocalDependency() and used in helper FindSafePreds(). SafeBlocks keeps track of all predecessor blocks that are safe to search through. A new test - ifthenelse.ll - has been added.


http://reviews.llvm.org/D13363

Files:
  lib/Transforms/Scalar/DeadStoreElimination.cpp
  test/Transforms/DeadStoreElimination/cycle.ll
  test/Transforms/DeadStoreElimination/ifthen.ll
  test/Transforms/DeadStoreElimination/ifthenelse.ll
  test/Transforms/DeadStoreElimination/loop.ll

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