1 files changed, 139 insertions, 0 deletions
diff --git a/arm_compute/core/NEON/kernels/assembly/transforms/transpose_interleave_common.hpp b/arm_compute/core/NEON/kernels/assembly/transforms/transpose_interleave_common.hpp
new file mode 100644
index 0000000000..882da9c831
--- /dev/null
+++ b/arm_compute/core/NEON/kernels/assembly/transforms/transpose_interleave_common.hpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2017 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.
+ */
+#pragma once
+
+template <unsigned int IntBy, typename TIn, typename TOut>
+struct TransposeInterleaveCommon {
+  // Override the moveblock_1xY methods to improve performance
+  static inline void moveblock_1x1(const TIn *&in0, TOut *out) {
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in0++);
+    }
+  }
+
+  static inline void moveblock_1x2(const TIn *&in0, const TIn *&in1, TOut *out) {
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in0++);
+    }
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in1++);
+    }
+  }
+
+  static inline void moveblock_1x4(const TIn *&in0, const TIn *&in1, const TIn *&in2, const TIn *&in3, TOut *out) {
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in0++);
+    }
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in1++);
+    }
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in2++);
+    }
+    for (unsigned int i = 0; i < IntBy; i++) {
+      *out++ = static_cast<TOut>(*in3++);
+    }
+  }
+
+  static inline void Transform(TOut *out, const TIn *in, const int stride, const int x0, const int xmax, const int k0, const int kmax) {
+    const auto ldin = stride;
+
+    TOut *outarray = out;
+    const TIn *inarray = in;
+    TOut *outptr_base = outarray;
+    const TIn *inptr_base = inarray + x0 + (k0 * ldin);
+    int ldout = (kmax - k0) * IntBy;
+
+    int k=(kmax-k0);
+    for ( ; k>3; k-=4) {
+        TOut *outptr = outptr_base;
+        const TIn *inptr = inptr_base;
+        const TIn *inptr1 = inptr + ldin;
+        const TIn *inptr2 = inptr1 + ldin;
+        const TIn *inptr3 = inptr2 + ldin;
+
+        prefetch_3x(inptr);
+        prefetch_3x(inptr1);
+        prefetch_3x(inptr2);
+        prefetch_3x(inptr3);
+
+        outptr_base += IntBy * 4;
+        inptr_base += ldin * 4;
+
+        for (int x = (xmax-x0) / IntBy; x > 0 ; x--) {
+            moveblock_1x4(inptr, inptr1, inptr2, inptr3, outptr);
+            outptr += ldout;
+        }
+    }
+
+    if (k) {
+        TOut *outptr = outptr_base;
+        const TIn *inptr = inptr_base;
+        const TIn *inptr1 = inptr + ldin;
+        const TIn *inptr2 = inptr1 + ldin;
+
+        prefetch_3x(inptr);
+        prefetch_3x(inptr1);
+        prefetch_3x(inptr2);
+
+        for (int x = (xmax-x0) / IntBy; x > 0 ; x--) {
+            switch(k) {
+                case 3:
+                    moveblock_1x2(inptr, inptr1, outptr);
+                    moveblock_1x1(inptr2, outptr + IntBy * 2);
+                    break;
+
+                case 2:
+                    moveblock_1x2(inptr, inptr1, outptr);
+                    break;
+
+                case 1:
+                    moveblock_1x1(inptr, outptr);
+                    break;
+                default:
+                    break;
+            }
+
+            outptr  += ldout;
+        }
+    }
+
+    // Cope with ragged X cases
+    const unsigned int overflow = (xmax - x0) % IntBy;
+    if (overflow) {
+        const TIn *inptr_base = inarray + (xmax - overflow) + (k0 * ldin);
+        TOut *outptr = outarray + ((xmax - x0) / IntBy) * ldout;
+
+        for (int k=(kmax-k0); k>0; k--) {
+            const TIn *inptr = inptr_base;
+            inptr_base += ldin;
+
+            for (unsigned int x=0; x < IntBy; x++) {
+                TOut val = (x < overflow) ? static_cast<TOut>(*inptr++) : static_cast<TOut>(0);
+                *outptr++ = val;
+            }
+        }
+    }
+}
+};