9.10.2.4 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.