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

[Ivan Baev via llvm-commits]

ivanbaev created this revision.
ivanbaev added reviewers: eeckstein, igor-laevsky, reames.
ivanbaev added a subscriber: llvm-commits.

We extend the search for redundant stores to predecessor blocks that
unconditionally lead to the block BB with the current store instruction.
That also includes single-block loops that unconditionally lead to BB.


http://reviews.llvm.org/D13363

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

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