Audio: Optimize saturation inline functions in format.h #4978
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This patch adds two included header files format_generic.h and format_hifi3.h. The latter contains intrinsics operations optimized versions of 16, 24, and 32 bit saturations. Generic header contains the previous C versions those will be used for anything else but xt-xcc HiFi3 compatible build. Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
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dbaluta
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Nov 11, 2021
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Do you have any performance numbers. How much better is the performance with this patch? Not a blocking matter though. |
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It shaved from stereo 2 in 1 out mixer processing time about 1 us, so about 0.4 MCPS. But if more saturations in some C algorithm the gain could be a lot more. |
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lgirdwood
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Nov 11, 2021
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This patch adds two included header files format_generic.h and
format_hifi3.h. The latter contains intrinsics operations
optimized versions of 16, 24, and 32 bit saturations. Generic
header contains the previous C versions those will be used
for anything else but xt-xcc HiFi3 compatible build.
Signed-off-by: Seppo Ingalsuo seppo.ingalsuo@linux.intel.com