COMPMID-2407: Add (logistic and tanh) activation support for QSYMM16 for NEON
Change-Id: Ib89c9cfe12975e51d1710af736c73ce79e667363
Signed-off-by: giuros01 <giuseppe.rossini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1412
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Manuel Bottini <manuel.bottini@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/arm_compute/core/NEON/NESymm.h b/arm_compute/core/NEON/NESymm.h
index 0479753..364a317 100644
--- a/arm_compute/core/NEON/NESymm.h
+++ b/arm_compute/core/NEON/NESymm.h
@@ -102,5 +102,52 @@
return out_s16;
}
+
+/** Dequantize a neon vector holding 8 16-bit quantized values.
+ *
+ * @param[in] qv Input values to be dequantized.
+ * @param[in] scale Quantization scale
+ *
+ * @return Dequantized values in a neon vector
+ */
+inline float32x4x2_t vdequantize_int16(const int16x8_t &qv, float scale)
+{
+ const float32x4_t vscale = vdupq_n_f32(scale);
+ const float32x4x2_t vdequantized_input =
+ {
+ {
+ vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_low_s16(qv))), vscale),
+ vmulq_f32(vcvtq_f32_s32(vmovl_s16(vget_high_s16(qv))), vscale)
+ }
+ };
+ return vdequantized_input;
+}
+
+/** Quantize a neon vector holding 8 floating point values.
+ *
+ * @param[in] qv Input values to be quantized.
+ * @param[in] scale Quantization scale
+ *
+ * @return A neon vector holding the quantized values
+ */
+inline int16x8_t vquantize_int16(const float32x4x2_t &qv, float scale)
+{
+ const float32x4_t vinvscale = vdupq_n_f32(1.f / scale);
+
+ const int32x4x2_t rf =
+ {
+ {
+#ifdef __aarch64__
+ vcvtnq_s32_f32(vmulq_f32(qv.val[0], vinvscale)),
+ vcvtnq_s32_f32(vmulq_f32(qv.val[1], vinvscale))
+#else //__aarch64__
+ vcvtq_s32_f32(vmulq_f32(qv.val[0], vinvscale)),
+ vcvtq_s32_f32(vmulq_f32(qv.val[1], vinvscale))
+#endif //__aarch64__
+ }
+ };
+ return vcombine_s16(vqmovn_s32(rf.val[0]), vqmovn_s32(rf.val[1]));
+}
+
} // namespace arm_compute
#endif // __ARM_COMPUTE_NESYMM_H__
diff --git a/arm_compute/core/NEON/kernels/NEActivationLayerKernel.h b/arm_compute/core/NEON/kernels/NEActivationLayerKernel.h
index 9381bea..5e87bd7 100644
--- a/arm_compute/core/NEON/kernels/NEActivationLayerKernel.h
+++ b/arm_compute/core/NEON/kernels/NEActivationLayerKernel.h
@@ -58,7 +58,7 @@
* @note If the output tensor is a nullptr, the activation function will be performed in-place
*
* @param[in, out] input Source tensor. In case of @p output tensor = nullptr, this tensor will store the result
- * of the activation function. Data types supported: QASYMM8/F16/F32.
+ * of the activation function. Data types supported: QASYMM8/QSYMM16/F16/F32.
* @param[out] output Destination tensor. Data type supported: same as @p input
* @param[in] activation_info Activation layer information.
*/
@@ -66,7 +66,7 @@
/** Static function to check if given info will lead to a valid configuration of @ref NEActivationLayerKernel
*
* @param[in] input Source tensor info. In case of @p output tensor info = nullptr, this tensor will store the result
- * of the activation function. Data types supported: QASYMM8/F16/F32.
+ * of the activation function. Data types supported: QASYMM8/QSYMM16/F16/F32.
* @param[in] output Destination tensor info. Data type supported: same as @p input
* @param[in] act_info Activation layer information.
*
@@ -97,6 +97,12 @@
*/
template <ActivationLayerInfo::ActivationFunction F, typename T>
typename std::enable_if<std::is_same<T, qasymm8_t>::value, void>::type activation(const Window &window);
+ /** Function to apply an activation function on a tensor.
+ *
+ * @param[in] window Region on which to execute the kernel
+ */
+ template <ActivationLayerInfo::ActivationFunction F, typename T>
+ typename std::enable_if<std::is_same<T, qsymm16_t>::value, void>::type activation(const Window &window);
private:
ITensor *_input;