本文整理汇总了C#中CodeGeneration.CGenState.JZ方法的典型用法代码示例。如果您正苦于以下问题：C# CGenState.JZ方法的具体用法？C# CGenState.JZ怎么用？C# CGenState.JZ使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CodeGeneration.CGenState的用法示例。
在下文中一共展示了CGenState.JZ方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CGenValue
//
// test Cond
// jz false ---+
// true_expr |
// +------- jmp finish |
// | false: <--------+
// | false_expr
// +--> finish:
//
public override Reg CGenValue(CGenState state) {
Int32 stack_size = state.StackSize;
Reg ret = this.Cond.CGenValue(state);
state.CGenForceStackSizeTo(stack_size);
// test Cond
switch (ret) {
case Reg.EAX:
state.TESTL(Reg.EAX, Reg.EAX);
break;
case Reg.ST0:
/// Compare Expr with 0.0
/// < see cref = "BinaryComparisonOp.OperateFloat(CGenState)" />
state.FLDZ();
state.FUCOMIP();
state.FSTP(Reg.ST0);
break;
default:
throw new InvalidProgramException();
}
Int32 false_label = state.RequestLabel();
Int32 finish_label = state.RequestLabel();
state.JZ(false_label);
this.TrueExpr.CGenValue(state);
state.JMP(finish_label);
state.CGenLabel(false_label);
ret = this.FalseExpr.CGenValue(state);
state.CGenLabel(finish_label);
return ret;
}示例2: CGenValue
public override Reg CGenValue(CGenState state) {
Int32 label_reset = state.label_idx;
state.label_idx++;
Int32 label_finish = state.label_idx;
state.label_idx++;
Reg ret = this.Left.CGenValue(state);
switch (ret) {
case Reg.EAX:
state.TESTL(Reg.EAX, Reg.EAX);
state.JZ(label_reset);
break;
case Reg.ST0:
state.FLDZ();
state.FUCOMIP();
state.FSTP(Reg.ST0);
state.JZ(label_reset);
break;
default:
throw new InvalidProgramException();
}
ret = this.Right.CGenValue(state);
switch (ret) {
case Reg.EAX:
state.TESTL(Reg.EAX, Reg.EAX);
state.JZ(label_reset);
break;
case Reg.ST0:
state.FLDZ();
state.FUCOMIP();
state.FSTP(Reg.ST0);
state.JZ(label_reset);
break;
default:
throw new InvalidProgramException();
}
state.MOVL(1, Reg.EAX);
state.JMP(label_finish);
state.CGenLabel(label_reset);
state.MOVL(0, Reg.EAX);
state.CGenLabel(label_finish);
return Reg.EAX;
}示例3: CGenStmt
public override void CGenStmt(Env env, CGenState state) {
Reg ret = CGenExprStmt(env, this.Cond, state);
CGenTest(ret, state);
Int32 false_label = state.RequestLabel();
Int32 finish_label = state.RequestLabel();
state.JZ(false_label);
this.TrueStmt.CGenStmt(env, state);
state.JMP(finish_label);
state.CGenLabel(false_label);
this.FalseStmt.CGenStmt(env, state);
state.CGenLabel(finish_label);
}