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| author | Johann <johann.koenig@duck.com> | 2018-11-12 11:30:03 -0800 |
|---|---|---|
| committer | Johann <johann.koenig@duck.com> | 2018-11-12 11:47:29 -0800 |
| commit | 43a30d3a1a6b627fa05ba63f4c51414ced781ccb (patch) | |
| tree | e320e59da20c1a3fecef24485de73cb9e03c980b /vpx_dsp/arm | |
| parent | 4a8c248744500f9caf00588ca312efce5659e45e (diff) | |
| download | libvpx-43a30d3a1a6b627fa05ba63f4c51414ced781ccb.tar libvpx-43a30d3a1a6b627fa05ba63f4c51414ced781ccb.tar.gz libvpx-43a30d3a1a6b627fa05ba63f4c51414ced781ccb.tar.bz2 libvpx-43a30d3a1a6b627fa05ba63f4c51414ced781ccb.zip | |
quantize: use aarch64 vmaxv
Simplify max value calculation on aarch64 by using vmaxv. Much
faster for 4x4 but diminishing returns as the block size grows.
Only the vp9 quantize has a speed test hooked up. Anticipate
similar results for the other quantize versions.
Before:
[ RUN ] NEON/VP9QuantizeTest.DISABLED_Speed/2
[ BENCH ] Bypass calculations 4x4 31.6 ms ( ±0.0 ms )
[ BENCH ] Full calculations 4x4 31.6 ms ( ±0.0 ms )
[ BENCH ] Bypass calculations 8x8 17.7 ms ( ±0.0 ms )
[ BENCH ] Full calculations 8x8 17.7 ms ( ±0.0 ms )
[ BENCH ] Bypass calculations 16x16 14.2 ms ( ±0.0 ms )
[ BENCH ] Full calculations 16x16 14.2 ms ( ±0.0 ms )
[ OK ] NEON/VP9QuantizeTest.DISABLED_Speed/2 (1906 ms)
[ RUN ] NEON/VP9QuantizeTest.DISABLED_Speed/3
[ BENCH ] Bypass calculations 32x32 18.6 ms ( ±0.0 ms )
[ BENCH ] Full calculations 32x32 18.6 ms ( ±0.0 ms )
After:
[ RUN ] NEON/VP9QuantizeTest.DISABLED_Speed/2
[ BENCH ] Bypass calculations 4x4 29.1 ms ( ±0.0 ms )
[ BENCH ] Full calculations 4x4 29.1 ms ( ±0.0 ms )
[ BENCH ] Bypass calculations 8x8 16.9 ms ( ±0.0 ms )
[ BENCH ] Full calculations 8x8 16.9 ms ( ±0.0 ms )
[ BENCH ] Bypass calculations 16x16 14.1 ms ( ±0.0 ms )
[ BENCH ] Full calculations 16x16 14.1 ms ( ±0.0 ms )
[ OK ] NEON/VP9QuantizeTest.DISABLED_Speed/2 (1803 ms)
[ RUN ] NEON/VP9QuantizeTest.DISABLED_Speed/3
[ BENCH ] Bypass calculations 32x32 18.6 ms ( ±0.0 ms )
[ BENCH ] Full calculations 32x32 18.6 ms ( ±0.0 ms )
Change-Id: Ic95812b3fdbd4e47b4dcb8ed46c68a9617de38d2
Diffstat (limited to 'vpx_dsp/arm')
| -rw-r--r-- | vpx_dsp/arm/quantize_neon.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/vpx_dsp/arm/quantize_neon.c b/vpx_dsp/arm/quantize_neon.c index 1e338516f..b5d1e7ecb 100644 --- a/vpx_dsp/arm/quantize_neon.c +++ b/vpx_dsp/arm/quantize_neon.c @@ -135,6 +135,9 @@ void vpx_quantize_b_neon(const tran_low_t *coeff_ptr, intptr_t n_coeffs, } while (n_coeffs > 0); } +#ifdef __aarch64__ + *eob_ptr = vmaxvq_u16(eob_max); +#else { const uint16x4_t eob_max_0 = vmax_u16(vget_low_u16(eob_max), vget_high_u16(eob_max)); @@ -142,6 +145,7 @@ void vpx_quantize_b_neon(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const uint16x4_t eob_max_2 = vpmax_u16(eob_max_1, eob_max_1); vst1_lane_u16(eob_ptr, eob_max_2, 0); } +#endif // __aarch64__ } static INLINE int32x4_t extract_sign_bit(int32x4_t a) { @@ -288,6 +292,9 @@ void vpx_quantize_b_32x32_neon(const tran_low_t *coeff_ptr, intptr_t n_coeffs, } } +#ifdef __aarch64__ + *eob_ptr = vmaxvq_u16(eob_max); +#else { const uint16x4_t eob_max_0 = vmax_u16(vget_low_u16(eob_max), vget_high_u16(eob_max)); @@ -295,4 +302,5 @@ void vpx_quantize_b_32x32_neon(const tran_low_t *coeff_ptr, intptr_t n_coeffs, const uint16x4_t eob_max_2 = vpmax_u16(eob_max_1, eob_max_1); vst1_lane_u16(eob_ptr, eob_max_2, 0); } +#endif // __aarch64__ } |