private void CGBinOpExp(FuncInfo funcInfo, DoubleOperationExpNode node, int a)
{
switch (node.OpType)
{
case TokenType.And:
case TokenType.Or:
{
int b = funcInfo.AllocReg();
CGExp(funcInfo, node.Exp1, b, 1);
funcInfo.FreeReg();
if (node.OpType == TokenType.And)
{
funcInfo.EmitTestSet(a, b, 0);
}
else
{
funcInfo.EmitTestSet(a, b, 1);
}
int jmpPC = funcInfo.EmitJMP(0, 0);
int c = funcInfo.AllocReg();
CGExp(funcInfo, node.Exp2, c, 1);
funcInfo.FreeReg();
funcInfo.EmitMove(a, c);
funcInfo.FixSBX(jmpPC, funcInfo.PC() - jmpPC);
break;
}
default:
{
int b = funcInfo.AllocReg();
CGExp(funcInfo, node.Exp1, b, 1);
int c = funcInfo.AllocReg();
CGExp(funcInfo, node.Exp2, c, 1);
funcInfo.EmitDoubleOperator(a, b, c, node.OpType);
funcInfo.FreeRegs(2);
break;
}
}
}
