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Fix mul implementation.

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This commit is contained in:
chriseth 2022-03-21 13:02:48 +01:00
parent 0966c77fa6
commit dd777baabf
1 changed files with 5 additions and 2 deletions
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5
libyul/optimiser/ReasoningBasedSimplifier.cpp
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@ -191,8 +191,11 @@ smtutil::Expression ReasoningBasedSimplifier::encodeEVMBuiltin(
return result;
}
case evmasm::Instruction::MUL:
// TODO this only works for multiplication by constants.
// TODO this only works will with the rematerializer.
if (holds_alternative<Literal>(_arguments.at(0)) || holds_alternative<Literal>(_arguments.at(1)))
return wrap(arguments.at(0) * arguments.at(1));
else
return newRestrictedVariable();
case evmasm::Instruction::SUB:
{
auto result = arguments.at(0) - arguments.at(1) + (bigint(1) << 256) * newZeroOneVariable();