55 lines
1.5 KiB
CMake
55 lines
1.5 KiB
CMake
# SoX Resampler Library Copyright (c) 2007-16 robs@users.sourceforge.net
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# Licence for this file: LGPL v2.1 See LICENCE for details.
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# - Finds SIMD32 support
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#
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# The following variables are set:
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# SIMD32_C_FLAGS - flags to add to the C compiler for this package.
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# SIMD32_FOUND - true if support for this package is found.
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if (DEFINED SIMD32_C_FLAGS)
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set (TRIAL_C_FLAGS)
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elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
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set (TRIAL_C_FLAGS
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# Gcc
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"-mfpu=neon-vfpv4 -mcpu=cortex-a7"
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"-mfpu=neon -mfloat-abi=hard"
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"-mfpu=neon -mfloat-abi=softfp"
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"-mfpu=neon -mfloat-abi=soft"
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)
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set (TEST_C_SOURCE "
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#include <arm_neon.h>
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int main(int c, char * * v) {
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float32x4_t a = vdupq_n_f32((float)c), b = vdupq_n_f32((float)!!v);
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return !vgetq_lane_u32(vceqq_f32(a,b),0);
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}
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")
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else ()
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if (WIN32) # Safety for when mixed lib/app compilers (but performance hit)
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set (GCC_WIN32_SIMD32_OPTS "-mincoming-stack-boundary=2")
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endif ()
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set (TRIAL_C_FLAGS
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# x64
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" "
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# MSVC x86
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"/arch:SSE /fp:fast -D__SSE__"
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# Gcc x86
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"-msse -mfpmath=sse ${GCC_WIN32_SIMD32_OPTS}"
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# Gcc x86 (old versions)
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"-msse -mfpmath=sse"
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)
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set (TEST_C_SOURCE "
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#include <xmmintrin.h>
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int main(int c, char * * v) {
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__m128 a = _mm_set_ss((float)c), b = _mm_set_ss((float)!!v);
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return _mm_comineq_ss(a,b);
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}
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")
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endif ()
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include (FindCFlags)
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FindCFlags ("SIMD32" "FLOAT-32 (single-precision) SIMD vectorization"
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"${TRIAL_C_FLAGS}" "${TEST_C_SOURCE}")
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