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Small fixes wrt ReasoningBasedSimplifier.

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This commit is contained in:
chriseth
2020-09-16 18:08:54 +02:00
parent ef0760614d
commit 6e2d2feb10
3 changed files with 5 additions and 7 deletions
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libyul/optimiser/ReasoningBasedSimplifier.cpp
+2 -4
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@@ -176,12 +176,11 @@ smtutil::Expression ReasoningBasedSimplifier::encodeEVMBuiltin(
// No `wrap()` needed here, because -2**255 / -1 results
// in 2**255 which is "converted" to its two's complement
// representation 2**255 in `signedToUnsigned`
signedToUnsigned(smtutil::signedDivision(
signedToUnsigned(smtutil::signedDivisionEVM(
unsignedToSigned(arguments.at(0)),
unsignedToSigned(arguments.at(1))
))
);
break;
case evmasm::Instruction::MOD:
return smtutil::Expression::ite(
arguments.at(1) == constantValue(0),
@@ -192,12 +191,11 @@ smtutil::Expression ReasoningBasedSimplifier::encodeEVMBuiltin(
return smtutil::Expression::ite(
arguments.at(1) == constantValue(0),
constantValue(0),
signedToUnsigned(signedModulo(
signedToUnsigned(signedModuloEVM(
unsignedToSigned(arguments.at(0)),
unsignedToSigned(arguments.at(1))
))
);
break;
case evmasm::Instruction::LT:
return booleanValue(arguments.at(0) < arguments.at(1));
case evmasm::Instruction::SLT: