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| author | chriseth <chris@ethereum.org> | 2018-12-18 23:09:51 +0800 |
|---|---|---|
| committer | chriseth <chris@ethereum.org> | 2018-12-19 00:25:49 +0800 |
| commit | 27e4e25a99d32be439ad1db9516b1f9f7d80cd99 (patch) | |
| tree | 4b630e9945fa07d24de80dec619397f3c1f253be /libevmasm | |
| parent | 01249984f2b5cbabc9fe3d4fd98917c606f77931 (diff) | |
| download | dexon-solidity-27e4e25a99d32be439ad1db9516b1f9f7d80cd99.tar.gz dexon-solidity-27e4e25a99d32be439ad1db9516b1f9f7d80cd99.tar.zst dexon-solidity-27e4e25a99d32be439ad1db9516b1f9f7d80cd99.zip | |
Optimize some instruction comparisons.
Diffstat (limited to 'libevmasm')
| -rw-r--r-- | libevmasm/PeepholeOptimiser.cpp | 6 | ||||
| -rw-r--r-- | libevmasm/SemanticInformation.cpp | 2 |
2 files changed, 3 insertions, 5 deletions
diff --git a/libevmasm/PeepholeOptimiser.cpp b/libevmasm/PeepholeOptimiser.cpp index f3ae8cbf..e211026b 100644 --- a/libevmasm/PeepholeOptimiser.cpp +++ b/libevmasm/PeepholeOptimiser.cpp @@ -160,8 +160,7 @@ struct CommutativeSwap: SimplePeepholeOptimizerMethod<CommutativeSwap, 2> { // Remove SWAP1 if following instruction is commutative if ( - _swap.type() == Operation && - _swap.instruction() == Instruction::SWAP1 && + _swap == Instruction::SWAP1 && SemanticInformation::isCommutativeOperation(_op) ) { @@ -185,8 +184,7 @@ struct SwapComparison: SimplePeepholeOptimizerMethod<SwapComparison, 2> }; if ( - _swap.type() == Operation && - _swap.instruction() == Instruction::SWAP1 && + _swap == Instruction::SWAP1 && _op.type() == Operation && swappableOps.count(_op.instruction()) ) diff --git a/libevmasm/SemanticInformation.cpp b/libevmasm/SemanticInformation.cpp index 78f3c9c7..2a24a27e 100644 --- a/libevmasm/SemanticInformation.cpp +++ b/libevmasm/SemanticInformation.cpp @@ -108,7 +108,7 @@ bool SemanticInformation::isSwapInstruction(AssemblyItem const& _item) bool SemanticInformation::isJumpInstruction(AssemblyItem const& _item) { - return _item == AssemblyItem(Instruction::JUMP) || _item == AssemblyItem(Instruction::JUMPI); + return _item == Instruction::JUMP || _item == Instruction::JUMPI; } bool SemanticInformation::altersControlFlow(AssemblyItem const& _item) |