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| author | Alex Beregszaszi <alex@rtfs.hu> | 2018-04-03 22:58:11 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-04-03 22:58:11 +0800 |
| commit | 0edce4b570c157927933697b30f0f94cbdf173b2 (patch) | |
| tree | a7ec50f920090e529b435e878e4df8cedd1f0eb4 /libevmasm/Assembly.cpp | |
| parent | 7753249f646f239819c62ab6847438dc84b6e04b (diff) | |
| parent | deadff263fbf4d5da911d7c544821cc77081a6d3 (diff) | |
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Merge pull request #3693 from ethereum/optimizeMLOAD
Optimize across MLOAD if MSIZE is not used.
Diffstat (limited to 'libevmasm/Assembly.cpp')
| -rw-r--r-- | libevmasm/Assembly.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libevmasm/Assembly.cpp b/libevmasm/Assembly.cpp index bd4ebf59..b71bc80c 100644 --- a/libevmasm/Assembly.cpp +++ b/libevmasm/Assembly.cpp @@ -438,13 +438,15 @@ map<u256, u256> Assembly::optimiseInternal( // function types that can be stored in storage. AssemblyItems optimisedItems; + bool usesMSize = (find(m_items.begin(), m_items.end(), AssemblyItem(Instruction::MSIZE)) != m_items.end()); + auto iter = m_items.begin(); while (iter != m_items.end()) { KnownState emptyState; CommonSubexpressionEliminator eliminator(emptyState); auto orig = iter; - iter = eliminator.feedItems(iter, m_items.end()); + iter = eliminator.feedItems(iter, m_items.end(), usesMSize); bool shouldReplace = false; AssemblyItems optimisedChunk; try |