COMPMID-1767: NEON: Implement Where/Select

Change-Id: If8a1ab6d6a029a5c547b726e0692eecef9a2e97d
Reviewed-on: https://review.mlplatform.org/415
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/arm_compute/core/NEON/wrapper/intrinsics/bitselect.h b/arm_compute/core/NEON/wrapper/intrinsics/bitselect.h
new file mode 100644
index 0000000000..8223f6d463
--- /dev/null
+++ b/arm_compute/core/NEON/wrapper/intrinsics/bitselect.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2018 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 SELECT 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_WRAPPER_BITSELECT_H__
+#define __ARM_COMPUTE_WRAPPER_BITSELECT_H__
+
+#include <arm_neon.h>
+
+namespace arm_compute
+{
+namespace wrapper
+{
+#define VBITSELECT_IMPL(stype, vtype, ctype, prefix, postfix)               \
+    inline vtype vbitselect(const ctype &a, const vtype &b, const vtype &c) \
+    {                                                                       \
+        return prefix##_##postfix(a, b, c);                                 \
+    }
+
+VBITSELECT_IMPL(uint8_t, uint8x8_t, uint8x8_t, vbsl, u8)
+VBITSELECT_IMPL(int8_t, int8x8_t, uint8x8_t, vbsl, s8)
+VBITSELECT_IMPL(uint16_t, uint16x4_t, uint16x4_t, vbsl, u16)
+VBITSELECT_IMPL(int16_t, int16x4_t, uint16x4_t, vbsl, s16)
+VBITSELECT_IMPL(uint32_t, uint32x2_t, uint32x2_t, vbsl, u32)
+VBITSELECT_IMPL(int32_t, int32x2_t, uint32x2_t, vbsl, s32)
+VBITSELECT_IMPL(float32x2_t, float32x2_t, uint32x2_t, vbsl, f32)
+#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
+VBITSELECT_IMPL(float16x4_t, float16x4_t, uint16x4_t, vbsl, f16)
+#endif // __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
+
+VBITSELECT_IMPL(uint8_t, uint8x16_t, uint8x16_t, vbslq, u8)
+VBITSELECT_IMPL(int8_t, int8x16_t, uint8x16_t, vbslq, s8)
+VBITSELECT_IMPL(uint16_t, uint16x8_t, uint16x8_t, vbslq, u16)
+VBITSELECT_IMPL(int16_t, int16x8_t, uint16x8_t, vbslq, s16)
+VBITSELECT_IMPL(uint32_t, uint32x4_t, uint32x4_t, vbslq, u32)
+VBITSELECT_IMPL(int32_t, int32x4_t, uint32x4_t, vbslq, s32)
+VBITSELECT_IMPL(float32x4_t, float32x4_t, uint32x4_t, vbslq, f32)
+#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
+VBITSELECT_IMPL(float16x8_t, float16x8_t, uint16x8_t, vbslq, f16)
+#endif // __ARM_FEATURE_FP16_VECTOR_ARITHMETIC
+
+#undef VBITSELECT_IMPL
+} // namespace wrapper
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_WRAPPER_BITSELECT_H__ */