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| author | Alex Beregszaszi <alex@rtfs.hu> | 2016-10-23 07:23:08 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2016-10-23 07:23:08 +0800 |
| commit | 6686ea6c03d80f11ef55352b917ef13a06dfd244 (patch) | |
| tree | eac2724a03940708530177380b119b976fae80c5 /libevmasm | |
| parent | 3e13e59ff96d92f18b972f10f4ef1da1ef249b32 (diff) | |
| download | dexon-solidity-6686ea6c03d80f11ef55352b917ef13a06dfd244.tar.gz dexon-solidity-6686ea6c03d80f11ef55352b917ef13a06dfd244.tar.zst dexon-solidity-6686ea6c03d80f11ef55352b917ef13a06dfd244.zip | |
Optimiser the PUSH 0, EQ case as ISZERO
Diffstat (limited to 'libevmasm')
| -rw-r--r-- | libevmasm/ExpressionClasses.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libevmasm/ExpressionClasses.cpp b/libevmasm/ExpressionClasses.cpp index 9d13a57a..cf5e6a0e 100644 --- a/libevmasm/ExpressionClasses.cpp +++ b/libevmasm/ExpressionClasses.cpp @@ -257,6 +257,7 @@ Rules::Rules() {{Instruction::MOD, {0, X}}, [=]{ return u256(0); }}, {{Instruction::AND, {X, 0}}, [=]{ return u256(0); }}, {{Instruction::OR, {X, ~u256(0)}}, [=]{ return ~u256(0); }}, + {{Instruction::EQ, {X, 0}}, [=]() -> Pattern { return {Instruction::ISZERO, {X}}; } }, // operations involving an expression and itself {{Instruction::AND, {X, X}}, [=]{ return X; }}, {{Instruction::OR, {X, X}}, [=]{ return X; }}, |