#### 9.12.2.4 Guarded Execution

`as` supports the full range of guarded execution directives for each instruction. Just append the directive after the instruction proper. The directives are:

‘`/tx`’

  Execute the instruction if flag f0 is true.

‘`/fx`’

  Execute the instruction if flag f0 is false.

‘`/xt`’

  Execute the instruction if flag f1 is true.

‘`/xf`’

  Execute the instruction if flag f1 is false.

‘`/tt`’

  Execute the instruction if both flags f0 and f1 are true.

‘`/tf`’

  Execute the instruction if flag f0 is true and flag f1 is false.