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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42286 91177308-0d34-0410-b5e6-96231b3b80d8
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Owen Anderson 2007-09-25 02:10:58 +00:00
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commit 50fd00024f
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@ -98,9 +98,17 @@ optimizer, speeding it up and making it more aggressive</p>
<ul>
<li>Owen DSE and MemDep analysis</li>
<li>Owen GVN</li>
<li>Owen GVN-PRE, not in llvm-gcc</li>
<li>Owen Anderson wrote the new MemoryDependenceAnalysis pass, which provides
a lazy, caching layer on top of alias analysis. He then used it to rewrite
DeadStoreElimination which resulted in significantly better compile time in
common cases, </li>
<li>Owen implemented the new GVN pass, which is also based on
MemoryDependenceAnalysis. This pass replaces GCSE/LoadVN in the standard
set of passes, providing more aggressive optimization at a some-what
improved compile-time cost.</li>
<li>Owen implemented GVN-PRE, a partial redundancy elimination algorithm that
shares some details with the new GVN pass. It is still in need of compile
time tuning, and is not turned on by default.</li>
<li>Devang merged ETForest and DomTree into a single easier to use data
structure.</li>
<li>Nick Lewycky improved loop trip count analysis to handle many more common