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Fix warning about potentially unused hsum_8x32b

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There's a lot of alternative options available, such as making it
globally visible with a kvz_ prefix, force inlining it, or anything.
This could be good too, hope it won't be compiled at all to translation
units where it's not used.
This commit is contained in:
Pauli Oikkonen 2020-04-02 16:27:39 +03:00
parent e3ba0bfb8c
commit addc1c3ede
2 changed files with 15 additions and 21 deletions
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15
src/strategies/avx2/avx2_common_functions.h
View file

@ -15,6 +15,16 @@
#define FIX_W32 #define FIX_W32
#endif #endif
// Non-inline functions defined in this header are likely to trigger a
// warning for each module including this header that does NOT use them,
// at least on unix-ish platforms (GCC/Clang both on native Unix and MinGW).
// Tell 'em we actually want to do that, it's not an accident.
#if defined __GNUC__ || defined __clang__ || defined __MINGW32__ || defined __MINGW64__
#define FIX_UNUSED __attribute__((unused))
#endif
#define FIX_NOINLINE FIX_W32 FIX_UNUSED
/* /*
* Reorder coefficients from raster to scan order * Reorder coefficients from raster to scan order
* Fun fact: Once upon a time, doing this in a loop looked like this: * Fun fact: Once upon a time, doing this in a loop looked like this:
@ -123,8 +133,7 @@ static INLINE void get_first_last_nz_int16(__m256i ints, int32_t *first, int32_t
*last = (31 - (int32_t)_lzcnt_u32(nonzero_bytes)) >> 1; *last = (31 - (int32_t)_lzcnt_u32(nonzero_bytes)) >> 1;
} }
/* MOVED TO SAO-AVX2.C WHERE THIS IS USED static int32_t FIX_NOINLINE hsum_8x32b(const __m256i v)
int32_t FIX_W32 kvz_hsum_8x32b(const __m256i v)
{ {
__m256i sum1 = v; __m256i sum1 = v;
__m256i sum2 = _mm256_permute4x64_epi64(sum1, _MM_SHUFFLE(1, 0, 3, 2)); __m256i sum2 = _mm256_permute4x64_epi64(sum1, _MM_SHUFFLE(1, 0, 3, 2));
@ -138,5 +147,5 @@ int32_t FIX_W32 kvz_hsum_8x32b(const __m256i v)
int32_t sum9 = _mm_cvtsi128_si32 (sum8); int32_t sum9 = _mm_cvtsi128_si32 (sum8);
return sum9; return sum9;
} }
*/
#endif #endif

21
src/strategies/avx2/sao-avx2.c
View file

@ -271,21 +271,6 @@ static INLINE __m256i FIX_W32 do_one_edge_ymm(const __m256i a,
return calc_diff_off_delta(diff_lo, diff_hi, offset, orig); return calc_diff_off_delta(diff_lo, diff_hi, offset, orig);
} }
int32_t FIX_W32 kvz_hsum_8x32b(const __m256i v)
{
__m256i sum1 = v;
__m256i sum2 = _mm256_permute4x64_epi64(sum1, _MM_SHUFFLE(1, 0, 3, 2));
__m256i sum3 = _mm256_add_epi32(sum1, sum2);
__m256i sum4 = _mm256_shuffle_epi32(sum3, _MM_SHUFFLE(1, 0, 3, 2));
__m256i sum5 = _mm256_add_epi32(sum3, sum4);
__m256i sum6 = _mm256_shuffle_epi32(sum5, _MM_SHUFFLE(2, 3, 0, 1));
__m256i sum7 = _mm256_add_epi32(sum5, sum6);
__m128i sum8 = _mm256_castsi256_si128(sum7);
int32_t sum9 = _mm_cvtsi128_si32(sum8);
return sum9;
}
static int32_t sao_edge_ddistortion_avx2(const kvz_pixel *orig_data, static int32_t sao_edge_ddistortion_avx2(const kvz_pixel *orig_data,
const kvz_pixel *rec_data, const kvz_pixel *rec_data,
int32_t block_width, int32_t block_width,
@ -384,7 +369,7 @@ static int32_t sao_edge_ddistortion_avx2(const kvz_pixel *orig_data,
sum = _mm256_add_epi32(sum, curr); sum = _mm256_add_epi32(sum, curr);
} }
} }
return kvz_hsum_8x32b(sum); return hsum_8x32b(sum);
} }
static void FIX_W32 calc_edge_dir_one_ymm(const __m256i a, static void FIX_W32 calc_edge_dir_one_ymm(const __m256i a,
@ -499,7 +484,7 @@ static void calc_sao_edge_dir_avx2(const kvz_pixel *orig_data,
} }
} }
for (uint32_t i = 0; i < 5; i++) { for (uint32_t i = 0; i < 5; i++) {
int32_t sum = kvz_hsum_8x32b(diff_accum[i]); int32_t sum = hsum_8x32b(diff_accum[i]);
diff_sum[i] += sum; diff_sum[i] += sum;
} }
} }
@ -892,7 +877,7 @@ static int32_t sao_band_ddistortion_avx2(const encoder_state_t *state,
sum = _mm256_add_epi32 (sum, curr_sum); sum = _mm256_add_epi32 (sum, curr_sum);
} }
} }
return kvz_hsum_8x32b(sum); return hsum_8x32b(sum);
use_generic: use_generic:
return sao_band_ddistortion_generic(state, orig_data, rec_data, block_width, return sao_band_ddistortion_generic(state, orig_data, rec_data, block_width,