Performance improvements

intel / ARM_NEON_2_x86_SSE

The platform independent header allowing to compile any C/C++ code containing ARM NEON intrinsic functions for x86 target systems using SIMD up to AVX2 intrinsic functions

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Performance improvements #17

Closed Bizonu closed 6 years ago

Bizonu commented 6 years ago

Fixed the indentation of certain macros.
Added const and static const to initialized structures, to avoid pushing those values on the stack. It was necessary to add a new macro (_NEON2SSESTORAGE) that specify if the functions are static or not.
Added a new check for the macro NEON2SSE_DISABLE_PERFORMANCE_WARNING. If this macro is defined, then the performance warnings are disabled.

Zvictoria commented 6 years ago

Bizonu, thanks a lot for this input. Everything looks reasonable to me. However prior to merging I need to test your changes in my environment, it will take some time, so please be patient :)