13.75 NOP

No Operation.

Syntax

NOP{cond}

where:

cond
is an optional condition code.

Usage

NOP does nothing. If NOP is not implemented as a specific instruction on your target architecture, the assembler treats it as a pseudo-instruction and generates an alternative instruction that does nothing, such as MOV r0, r0 (A32) or MOV r8, r8 (T32).

NOP is not necessarily a time-consuming NOP. The processor might remove it from the pipeline before it reaches the execution stage.

You can use NOP for padding, for example to place the following instruction on a 64-bit boundary in A32, or a 32-bit boundary in T32.

Architectures

This instruction is available in A32 and T32.

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