[PATCH] D29866: [PDSE] Add PDSE.

[bryant via Phabricator via llvm-commits]

bryant updated this revision to Diff 91132.
bryant added a comment.
Herald added a subscriber: mehdi_amini.

It runs faster than before.

- Reduced number of whole function traversals. All occurrence classes are now DSE-ed and renamed in a single post-dom pre-order traversal.

- Only call getModRefInfo when absolutely necessary, which is when a potential aliasing load is encountered.

- Cache between-class aliasing info.


Repository:
  rL LLVM

https://reviews.llvm.org/D29866

Files:
  include/llvm/LinkAllPasses.h
  include/llvm/Transforms/IPO/PassManagerBuilder.h
  include/llvm/Transforms/Scalar.h
  lib/Transforms/IPO/PassManagerBuilder.cpp
  lib/Transforms/Scalar/PDSE.cpp
  test/Transforms/DeadStoreElimination/pdse.ll

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