simd.h improvements #2621
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simd.h improvements #2621
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SIMD improvements for emulating 8-wide on 4-wide HW: for many methods
on 8-wide SIMD types when running on 4-wide hardware, it's better (as
revealed by benchmarks) to implement as two 4-wide ops rather than
falling back to a purely scalar path.
Add operator*(vfloat{4,6,16}, float). On SSE, it hardly matters, no
better than letting the float be promoted to vfloat. But NEON has
vec*float.
Add NEON implementation of blend, min, max, reduce_add.
Signed-off-by: Larry Gritz <lg@larrygritz.com>
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SIMD improvements for emulating 8-wide on 4-wide HW: for many methods
on 8-wide SIMD types when running on 4-wide hardware, it's better (as
revealed by benchmarks) to implement as two 4-wide ops rather than
falling back to a purely scalar path.
Add operator*(vfloat{4,6,16}, float). On SSE, it hardly matters, no
better than letting the float be promoted to vfloat. But NEON has
vec*float.
Add NEON implementation of blend, min, max, reduce_add.
Signed-off-by: Larry Gritz lg@larrygritz.com