I'm trying to ensure I get a conditional move if its available during
a saturating subtract operation. The saturating subtract clamps the
min value at 0.
Here's what it looks like in high level code:
// Perform a-b, clamp at 0
return (a > b) ? (a - b) : 0;
But based on this bug report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22568, I can't tell if
that's what I should be using.
What pattern should I use to get a CMOV?
Thanks in advance.
