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| author | chriseth <chris@ethereum.org> | 2017-09-26 21:27:03 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2018-03-06 22:30:18 +0800 |
| commit | b467116ea85383d5c8492e7f21ea16ce7c70ebc9 (patch) | |
| tree | b0bd8c7482d2f8c7b3716b11830990bd8a6fa110 /libsolidity/codegen | |
| parent | 0df4c64884d1b8d3695dd59de5f828ba5298b313 (diff) | |
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Use STATICCALL for pure function calls if EVM version supports it and 0.5.0 is activated.
Diffstat (limited to 'libsolidity/codegen')
| -rw-r--r-- | libsolidity/codegen/ExpressionCompiler.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libsolidity/codegen/ExpressionCompiler.cpp b/libsolidity/codegen/ExpressionCompiler.cpp index d27af7db..7162cb0d 100644 --- a/libsolidity/codegen/ExpressionCompiler.cpp +++ b/libsolidity/codegen/ExpressionCompiler.cpp @@ -1610,6 +1610,10 @@ void ExpressionCompiler::appendExternalFunctionCall( bool returnSuccessCondition = funKind == FunctionType::Kind::BareCall || funKind == FunctionType::Kind::BareCallCode || funKind == FunctionType::Kind::BareDelegateCall; bool isCallCode = funKind == FunctionType::Kind::BareCallCode || funKind == FunctionType::Kind::CallCode; bool isDelegateCall = funKind == FunctionType::Kind::BareDelegateCall || funKind == FunctionType::Kind::DelegateCall; + bool useStaticCall = + _functionType.stateMutability() <= StateMutability::View && + m_context.experimentalFeatureActive(ExperimentalFeature::V050) && + m_context.evmVersion().hasStaticCall(); unsigned retSize = 0; if (returnSuccessCondition) @@ -1738,6 +1742,8 @@ void ExpressionCompiler::appendExternalFunctionCall( // [value,] addr, gas (stack top) if (isDelegateCall) solAssert(!_functionType.valueSet(), "Value set for delegatecall"); + else if (useStaticCall) + solAssert(!_functionType.valueSet(), "Value set for staticcall"); else if (_functionType.valueSet()) m_context << dupInstruction(m_context.baseToCurrentStackOffset(valueStackPos)); else @@ -1769,10 +1775,13 @@ void ExpressionCompiler::appendExternalFunctionCall( gasNeededByCaller += eth::GasCosts::callNewAccountGas; // we never know m_context << gasNeededByCaller << Instruction::GAS << Instruction::SUB; } + // Order is important here, STATICCALL might overlap with DELEGATECALL. if (isDelegateCall) m_context << Instruction::DELEGATECALL; else if (isCallCode) m_context << Instruction::CALLCODE; + else if (useStaticCall) + m_context << Instruction::STATICCALL; else m_context << Instruction::CALL; |