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[DSE]Enhance shorthening MemIntrinsic based on OverlapIntervals
authorJun Bum Lim <junbuml@codeaurora.org>
Fri, 15 Jul 2016 16:14:34 +0000 (16:14 +0000)
committerJun Bum Lim <junbuml@codeaurora.org>
Fri, 15 Jul 2016 16:14:34 +0000 (16:14 +0000)
commit2ca934ea314a0a494a77d0bb695c65aeda3f934c
treef355da89587d8defd5f46e550c253a25b4ea1721tree | snapshot
parent733cec8f05f298a02e1d0af531801b89dd4402e7commit | diff
[DSE]Enhance shorthening MemIntrinsic based on OverlapIntervals

Summary:
This change use the overlap interval map built from partial overwrite tracking to perform shortening MemIntrinsics.
Add test cases which was missing opportunities before.

Reviewers: hfinkel, eeckstein, mcrosier

Subscribers: mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D21909

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275571 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/DeadStoreElimination.cpp diff | blob | history
test/Transforms/DeadStoreElimination/OverwriteStoreBegin.ll diff | blob | history
test/Transforms/DeadStoreElimination/OverwriteStoreEnd.ll diff | blob | history
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