COMPMID-881: RSH new arm_gemm interface.

Change-Id: I1e2a1a77097d8017c274af3f97eba6964f80f5fa
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/122592
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

1 files changed, 102 insertions, 0 deletions

diff --git a/src/core/NEON/kernels/arm_gemm/gemm_native.hpp b/src/core/NEON/kernels/arm_gemm/gemm_native.hpp
new file mode 100644
index 0000000000..b0192793b9
--- /dev/null
+++ b/src/core/NEON/kernels/arm_gemm/gemm_native.hpp
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2017-2018 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 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
+
+#include <stdio.h>
+
+#include "arm_gemm.hpp"
+
+#include "mergeresults.hpp"
+#include "profiler.hpp"
+#include "transform.hpp"
+
+namespace arm_gemm
+{
+// Implementation of the GemmCommon abstract class.
+//
+// This is implementation is for native GEMM with no transposition.
+//
+// By default the source data is used in-place, but if type conversion is
+// needed we need to allocate working space (CURRENTLY NOT IMPLEMENTED).
+
+template <typename strategy, typename To, typename Tr>
+class GemmNative : public GemmCommon<To, Tr>
+{
+    typedef typename strategy::operand_type Toi;
+    typedef typename strategy::result_type  Tri;
+
+    const unsigned int _Msize;
+    const unsigned int _Nsize;
+    const unsigned int _Ksize;
+
+    Tr _beta;
+
+    const CPUInfo *const _ci;
+
+    unsigned int k_block = 0;
+    unsigned int n_block = 0;
+
+public:
+    GemmNative(GemmNative &) = delete;
+    GemmNative &operator=(GemmNative &) = delete;
+
+    GemmNative(const CPUInfo *ci, const unsigned int M, const unsigned int N, const unsigned int K, const Tr beta)
+        : _Msize(M), _Nsize(N), _Ksize(K), _beta(beta), _ci(ci)
+    {
+        /* For now don't do any blocking. TODO: figure out if we should. */
+        k_block = K;
+        n_block = N;
+    }
+
+    // Window is number of out_height blocks
+    unsigned int get_window_size() const override
+    {
+        return iceildiv(_Msize, strategy::out_height);
+    }
+
+    // Actually execute the GEMM.
+    void execute(unsigned int start, unsigned int end, int) override
+    {
+        profiler prof;
+        strategy strat(_ci);
+
+        unsigned int M_start = start * strategy::out_height;
+        unsigned int M_end   = std::min(end * strategy::out_height, _Msize);
+
+        static_assert(std::is_same<To, Toi>::value, "gemm_native: Operand types must be the same.");
+        static_assert(std::is_same<Tr, Tri>::value, "gemm_native: Result types must be the same.");
+
+        for(unsigned int y0 = M_start; y0 < M_end; y0 += strategy::out_height)
+        {
+            unsigned int ymax = std::min(y0 + strategy::out_height, M_end);
+
+            prof(PROFILE_KERNEL, (ymax - y0) * _Nsize * _Ksize, [&](void)
+            {
+                strat.kernel(this->_Aptr + (y0 * this->_lda), this->_lda, this->_Bptr, this->_ldb, this->_Cptr + (y0 * this->_ldc), this->_ldc, _beta, (ymax - y0), _Nsize, _Ksize);
+            });
+        }
+    }
+};
+
+} // namespace arm_gemm