OpCodes.Beq_S 字段


如果两个值相等,则将控制转移到目标指令(短格式)。Transfers control to a target instruction (short form) if two values are equal.

public: static initonly System::Reflection::Emit::OpCode Beq_S;
public static readonly System.Reflection.Emit.OpCode Beq_S;
 staticval mutable Beq_S : System.Reflection.Emit.OpCode
Public Shared ReadOnly Beq_S As OpCode 



下表列出了指令的十六进制和 Microsoft 中间语言(MSIL)程序集格式以及简短的参考摘要:The following table lists the instruction's hexadecimal and Microsoft Intermediate Language (MSIL) assembly format, along with a brief reference summary:

格式Format 程序集格式Assembly Format 说明Description
2E < int8 >2E < int8 > beq targetbeq.s target 分支到目标指令,偏移量 target (如果相等)、短格式Branch to the target instruction at offset target if equal, short form

堆栈转换行为顺序如下:The stack transitional behavior, in sequential order, is:

  1. value1 推送到堆栈上。value1 is pushed onto the stack.

  2. value2 推送到堆栈上。value2 is pushed onto the stack.

  3. value2 和 @no__t 从堆栈中弹出;如果 value1 等于 value2,则执行分支操作。value2 and value1 are popped from the stack; if value1 is equal to value2, the branch operation is performed.

如果 value1 等于 value2,则 beq.s 指令将控制转移到指定的目标指令。The beq.s instruction transfers control to the specified target instruction if value1 is equal to value2. 其效果与执行 ceq 指令后跟特定目标指令的 brtrue 分支相同。The effect is the same as performing a ceq instruction followed by a brtrue branch to the specific target instruction. 目标指令表示为与当前指令后面的指令开头之间的1字节有符号偏移量。The target instruction is represented as a 1-byte signed offset from the beginning of the instruction following the current instruction.

可接受的操作数类型如下所示:The acceptable operand types are encapsulated below:

如果目标指令具有一个或多个前缀代码,则只能将控制转移到其中的第一个前缀。If the target instruction has one or more prefix codes, control can only be transferred to the first of these prefixes.

控制传入和传出 trycatchfilterfinally 块无法通过此指令执行(此类传输受到严格限制,因此必须改用 Leave 指令)。Control transfers into and out of try, catch, filter, and finally blocks cannot be performed by this instruction (such transfers are severely restricted and must use the Leave instruction instead).

以下 @no__t 0 方法重载可以使用 @no__t 操作码:The following Emit method overload can use the beq.s opcode:

  • ILGenerator (操作码、标签)ILGenerator.Emit(OpCode, Label)