SVE Imlementation

[Juliya32]

Hi
1)Is sve already implemented in fftw-3.3.10
i) If yes, is it implemented for all routines?
ii) If not , How can one implement for the remaining routines ( Where to make the changes in the code and any other
targeted file sve.
I have checked this (https://github.com/rdolbeau/fftw3/tree/arm-sve) and found only one program that uses
sve_width() (calculates width of sve vector) in simd-support/sve.h file.
2) If sve is not applied at all could you please guide me in applying sve to fftw library. I tried changing the given part of code
under kernel/planner.c usning intrinsics on arm.
for (i = 0; i < osiz; ++i)
ntab[i] = otab[i];
After making the changing i tried rebuilding the library, but it throws error that arm_sve is not supported.
(It cannot recognize any sve data types or routines like sv_bool, sv_float32, svld1 etc. )

I built the library using the following commands:
1)./configure --prefix=/home/../FFTW_SVE/fftw-3.3.10/build/ --enable-sve --enable-neon --enable-fma --enable-armv8-cntvct-e10 --enable-threads --enable-shared --enable-single CC=gcc CFLAGS="-O3 -gdwarf-4 -mtune=native -march=armv8.2-a+sve -msve-vector-bits=512" CXXFLAGS="-Ofast -march=armv8.2-a+sve -sve-vector-bits=512" FC=gfortran FFLAGS="-g -O3 -march=armv8.2-a+sve -msve-vector-bits=512"
2)make
3)make install
gcc --version 12.2.0

[rdolbeau]

see #315, yes it can be exploited in all plans (but will only be used if useful vs. scalar and NEON if using >= measure)