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NEG->BNOT change

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This commit is contained in:
Christian 2014-10-29 00:29:07 +01:00
parent 413b315a03
commit 01224287f5
1 changed files with 4 additions and 8 deletions
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12
Compiler.cpp
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@ -111,13 +111,7 @@ void ExpressionCompiler::endVisit(UnaryOperation& _unaryOperation)
append(eth::Instruction::NOT); append(eth::Instruction::NOT);
break; break;
case Token::BIT_NOT: // ~ case Token::BIT_NOT: // ~
// ~a modeled as "a xor (0 - 1)" for now append(eth::Instruction::BNOT);
append(eth::Instruction::PUSH1);
append(1);
append(eth::Instruction::PUSH1);
append(0);
append(eth::Instruction::SUB);
append(eth::Instruction::XOR);
break; break;
case Token::DELETE: // delete case Token::DELETE: // delete
// a -> a xor a (= 0). // a -> a xor a (= 0).
@ -149,7 +143,9 @@ void ExpressionCompiler::endVisit(UnaryOperation& _unaryOperation)
// unary add, so basically no-op // unary add, so basically no-op
break; break;
case Token::SUB: // - case Token::SUB: // -
append(eth::Instruction::NEG); append(eth::Instruction::PUSH1);
append(0);
append(eth::Instruction::SUB);
break; break;
default: default:
assert(false); // invalid operation assert(false); // invalid operation