Possible sat optimisation?

[jonathanrpace]

GLSL doesn't have a saturate function - so I'm using clamp( value, 0.0, 1.0 ) instead. Currently this is being compiled down to a pair of min/max instructions, and requires the use of an additional temporary register (Something I can't afford in complex shaders).

As AGAL supports sat, would it be possible to reduce this case down to a single instruction?