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Merge pull request #6952 from ethereum/remove-redundant-optimizer-rule

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optimizer: Remove redundant rule from the optimizer rule list
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chriseth 2019-06-17 14:37:31 +02:00 committed by GitHub
commit e186dc061d
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libevmasm/RuleList.h
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@ -89,7 +89,6 @@ std::vector<SimplificationRule<Pattern>> simplificationRuleListPart1(
{{Instruction::BYTE, {A, B}}, [=]{ return A.d() >= 32 ? 0 : (B.d() >> unsigned(8 * (31 - A.d()))) & 0xff; }, false}, {{Instruction::BYTE, {A, B}}, [=]{ return A.d() >= 32 ? 0 : (B.d() >> unsigned(8 * (31 - A.d()))) & 0xff; }, false},
{{Instruction::ADDMOD, {A, B, C}}, [=]{ return C.d() == 0 ? 0 : u256((bigint(A.d()) + bigint(B.d())) % C.d()); }, false}, {{Instruction::ADDMOD, {A, B, C}}, [=]{ return C.d() == 0 ? 0 : u256((bigint(A.d()) + bigint(B.d())) % C.d()); }, false},
{{Instruction::MULMOD, {A, B, C}}, [=]{ return C.d() == 0 ? 0 : u256((bigint(A.d()) * bigint(B.d())) % C.d()); }, false}, {{Instruction::MULMOD, {A, B, C}}, [=]{ return C.d() == 0 ? 0 : u256((bigint(A.d()) * bigint(B.d())) % C.d()); }, false},
{{Instruction::MULMOD, {A, B, C}}, [=]{ return A.d() * B.d(); }, false},
{{Instruction::SIGNEXTEND, {A, B}}, [=]() -> u256 { {{Instruction::SIGNEXTEND, {A, B}}, [=]() -> u256 {
if (A.d() >= 31) if (A.d() >= 31)
return B.d(); return B.d();