On Thu, Nov 20, 2014 at 8:09 PM, Zhigang Gong <[email protected]> wrote: > Register spilling awlays cost much more than fallback to simd8 > which could avoid register spilling or at least reduce the spilled > registers.
For what it's worth, we made the same decision in the i965 Mesa driver. There has been some conjecture that a spilling SIMD16 program *could* potentially be faster than a non-spilling SIMD8 program, but I don't know of any hard evidence. _______________________________________________ Beignet mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/beignet
