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build-sys: meson: check if NEON code can be compiled on arm

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When Meson SIMD module returns HAVE_NEON=1 on arm host, do extra compile check
to verify compiler can actually handle NEON code.

Related Meson issue #6361 https://github.com/mesonbuild/meson/issues/6361

Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/574>
This commit is contained in:
garrison 2021-06-04 22:13:02 +00:00 • committed by PulseAudio Marge Bot
parent e0d9231bf4
commit 6d2a49a6a1
1 changed files with 31 additions and 10 deletions
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33
src/pulsecore/meson.build
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@ -172,16 +172,37 @@ endif
# FIXME: SIMD support (ORC) # FIXME: SIMD support (ORC)
simd = import('unstable-simd') simd = import('unstable-simd')
libpulsecore_simd = simd.check('libpulsecore_simd', simd_variants = [
mmx : ['remap_mmx.c', 'svolume_mmx.c'], { 'mmx' : ['remap_mmx.c', 'svolume_mmx.c'] },
sse : ['remap_sse.c', 'sconv_sse.c', 'svolume_sse.c'], { 'sse' : ['remap_sse.c', 'sconv_sse.c', 'svolume_sse.c'] },
neon : ['remap_neon.c', 'sconv_neon.c', 'mix_neon.c'], { 'neon' : ['remap_neon.c', 'sconv_neon.c', 'mix_neon.c'] },
]
libpulsecore_simd_lib = []
foreach simd_kwargs : simd_variants
if host_machine.cpu_family() == 'arm' and 'neon' in simd_kwargs
if not cc.compiles('''
#include <arm_neon.h>
int main() {
return sizeof(uint8x8_t) + sizeof(int32x4_t) + sizeof(float32x4_t);
}
''', name : 'neon code')
continue
endif
endif
libpulsecore_simd = simd.check('libpulsecore_simd',
kwargs : simd_kwargs,
c_args : [pa_c_args], c_args : [pa_c_args],
include_directories : [configinc, topinc], include_directories : [configinc, topinc],
implicit_include_directories : false, implicit_include_directories : false,
compiler : cc) compiler : cc)
libpulsecore_simd_lib = libpulsecore_simd[0]
cdata.merge_from(libpulsecore_simd[1]) libpulsecore_simd_lib += libpulsecore_simd[0]
cdata.merge_from(libpulsecore_simd[1])
endforeach
if host_machine.system() == 'windows' if host_machine.system() == 'windows'
libpulsecore_sources += ['mutex-win32.c', libpulsecore_sources += ['mutex-win32.c',