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Introduce JumpdestRemover optimisation step

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Alex Beregszaszi
2017-08-25 10:42:36 +01:00
parent de5c702cc6
commit 70e89a5dac
5 changed files with 147 additions and 10 deletions
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libevmasm/Assembly.h
+5 -3
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@@ -100,6 +100,7 @@ public:
struct OptimiserSettings
{
bool isCreation = false;
bool runJumpdestRemover = false;
bool runPeephole = false;
bool runDeduplicate = false;
bool runCSE = false;
@@ -110,7 +111,7 @@ public:
};
/// Execute optimisation passes as defined by @a _settings and return the optimised assembly.
Assembly& optimise(OptimiserSettings _settings);
Assembly& optimise(OptimiserSettings const& _settings);
/// Modify (if @a _enable is set) and return the current assembly such that creation and
/// execution gas usage is optimised. @a _isCreation should be true for the top-level assembly.
@@ -128,8 +129,9 @@ public:
protected:
/// Does the same operations as @a optimise, but should only be applied to a sub and
/// returns the replaced tags.
std::map<u256, u256> optimiseInternal(OptimiserSettings _settings);
/// returns the replaced tags. Also takes an argument containing the tags of this assembly
/// that are referenced in a super-assembly.
std::map<u256, u256> optimiseInternal(OptimiserSettings const& _settings, std::set<size_t> const& _tagsReferencedFromOutside);
unsigned bytesRequired(unsigned subTagSize) const;