COMPMID-3870: Create ActivationLayer SVE/SVE2

Adds support for ActivationLayer for SVE and SVE2.
Datatypes supported:
*FP32
*FP16
*QASYMM8
*QASYMM8_SIGNED
*QSYMM16

Change-Id: Ia3583891795cda4ca2f9fa27c440731a5c27710d
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4566
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/src/core/NEON/SVEMath.h b/src/core/NEON/SVEMath.h
new file mode 100644
index 0000000000..bdf2e894e2
--- /dev/null
+++ b/src/core/NEON/SVEMath.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2020 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef ARM_COMPUTE_SVEMATH_H
+#define ARM_COMPUTE_SVEMATH_H
+
+#if defined(__ARM_FEATURE_SVE)
+#include <arm_sve.h>
+#include <array>
+
+namespace arm_compute
+{
+/** Calculate exponent.
+ *
+ * @param[in] pg  Input reciprocal.
+ * @param[in] val Input vector value in F32 format.
+ *
+ * @return The calculated exponent.
+ */
+svfloat32_t svexp_f32_z(svbool_t pg, svfloat32_t val);
+
+/** Calculate reciprocal.
+ *
+ * @param[in] pg Input reciprocal.
+ * @param[in] x  Input value.
+ *
+ * @return The calculated reciprocal.
+ */
+svfloat32_t svinv_f32_z(svbool_t pg, svfloat32_t x);
+
+/** Calculate logarithm
+ *
+ * @param[in] pg Input reciprocal.
+ * @param[in] x  Input vector value in F32 format.
+ *
+ * @return The calculated logarithm.
+ */
+svfloat32_t svlog_f32_z(svbool_t pg, svfloat32_t x);
+
+/** Calculate hyperbolic tangent.
+ *
+ * tanh(x) = (e^2x - 1)/(e^2x + 1)
+ *
+ * @note We clamp x to [-5,5] to avoid overflowing issues.
+ *
+ * @param[in] pg  Input reciprocal.
+ * @param[in] val Input vector value in F32 format.
+ *
+ * @return The calculated Hyperbolic Tangent.
+ */
+svfloat32_t svtanh_f32_z(svbool_t pg, svfloat32_t val);
+
+/** Calculate hyperbolic tangent.
+ *
+ * tanh(x) = (e^2x - 1)/(e^2x + 1)
+ *
+ * @note We clamp x to [-5,5] to avoid overflowing issues.
+ *
+ * @param[in] pg  Input reciprocal.
+ * @param[in] val Input vector value in F16 format.
+ *
+ * @return The calculated Hyperbolic Tangent.
+ */
+svfloat16_t svtanh_f16_z(svbool_t pg, svfloat16_t val);
+
+/** Calculate exponential
+ *
+ * @param[in] pg Input reciprocal.
+ * @param[in] x  Input vector value in F16 format.
+ *
+ * @return The calculated exponent.
+ */
+svfloat16_t svexp_f16_z(svbool_t pg, svfloat16_t x);
+
+/** Calculate reciprocal.
+ *
+ * @param[in] pg Input reciprocal.
+ * @param[in] x  Input value.
+ *
+ * @return The calculated reciprocal.
+ */
+svfloat16_t svinv_f16_z(svbool_t pg, svfloat16_t x);
+
+/** Calculate logarithm
+ *
+ * @param[in] pg Input reciprocal.
+ * @param[in] x  Input vector value in F32 format.
+ *
+ * @return The calculated logarithm.
+ */
+svfloat16_t svlog_f16_z(svbool_t pg, svfloat16_t x);
+
+} // namespace arm_compute
+#include "src/core/NEON/SVEMath.inl"
+#endif /* defined(__ARM_FEATURE_SVE) */
+#endif /* ARM_COMPUTE_SVEMATH_H */
\ No newline at end of file