When I implemented these built-ins couple of years ago, I thought there must be a neat way to optimize them. I tried a couple of things with the different vector immediates i965 provides, but the V/UV types are too small to represent the appropriate shift values, and shift instructions can't shift by a floating-point source (if using the vector float imm).
Curro pointed out that I could actually load the integer shift values with VF immediate just by doing a type converting move. How simple. So anyway, these optimizations are of pretty negligible value, except for maybe demonstrating that VF works. I've had them sitting on a branch for months, so time for them to live somewhere else. At least we can disassemble VF immediates now. I hope to have some more uses of VF immediates soon too. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
