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| author | Sang-Hoon Park <sang-hoon.park@arm.com> | 2019-12-04 09:46:28 +0000 |
|---|---|---|
| committer | Michele Di Giorgio <michele.digiorgio@arm.com> | 2019-12-20 09:56:36 +0000 |
| commit | d817647a4fabc8eccd0e64f54465e378a4239b32 (patch) | |
| tree | 361ba03c78d83974cf7396510c85feb6dd3159e6 /arm_compute | |
| parent | e7be8a072967f9ae547468a7625e11477ea32221 (diff) | |
| download | ComputeLibrary-d817647a4fabc8eccd0e64f54465e378a4239b32.tar.gz | |
COMPMID-2767 [NEON] add support for QASYMM8_SIGNED to DequantizationLayer
Change-Id: If5b21d1e656b21baf39346c2fd74e8edc75007f5
Signed-off-by: Sang-Hoon Park <sang-hoon.park@arm.com>
Reviewed-on: https://review.mlplatform.org/c/2429
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Diffstat (limited to 'arm_compute')
| -rw-r--r-- | arm_compute/core/NEON/NEAsymm.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arm_compute/core/NEON/NEAsymm.h b/arm_compute/core/NEON/NEAsymm.h index 234d48882c..67adcef9b1 100644 --- a/arm_compute/core/NEON/NEAsymm.h +++ b/arm_compute/core/NEON/NEAsymm.h @@ -451,6 +451,30 @@ inline float32x4x4_t vdequantize(const uint8x16_t &qv, float scale, int32_t offs return vdequantized_input; } +/** Dequantize a vector of 16 values stored as signed asymmetric. + * + * @param[in] qv Input values to be dequantized. + * @param[in] scale Quantization scaling factor. + * @param[in] offset Zero quantization offset. + * + * @return Dequantized values in a neon vector + */ +inline float32x4x4_t vdequantize(const int8x16_t &qv, float scale, int32_t offset) +{ + const int32x4_t voffset = vdupq_n_s32(offset); + const float32x4_t vscale = vdupq_n_f32(scale); + const float32x4x4_t vdequantized_input = + { + { + vmulq_f32(vcvtq_f32_s32(vsubq_s32(vmovl_s16(vget_low_s16(vmovl_s8(vget_low_s8(qv)))), voffset)), vscale), + vmulq_f32(vcvtq_f32_s32(vsubq_s32(vmovl_s16(vget_high_s16(vmovl_s8(vget_low_s8(qv)))), voffset)), vscale), + vmulq_f32(vcvtq_f32_s32(vsubq_s32(vmovl_s16(vget_low_s16(vmovl_s8(vget_high_s8(qv)))), voffset)), vscale), + vmulq_f32(vcvtq_f32_s32(vsubq_s32(vmovl_s16(vget_high_s16(vmovl_s8(vget_high_s8(qv)))), voffset)), vscale), + } + }; + return vdequantized_input; +} + /** Dequantize following symmetric quantization scheme a neon vector holding 16 quantized values. * * @param[in] qv Input values to be dequantized. |