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>
diff --git a/src/core/NEON/kernels/arm_gemm/asmlib.hpp b/src/core/NEON/kernels/arm_gemm/asmlib.hpp
new file mode 100644
index 0000000..b3fcb33
--- /dev/null
+++ b/src/core/NEON/kernels/arm_gemm/asmlib.hpp
@@ -0,0 +1,128 @@
+/*
+ * 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
+
+#ifdef __aarch64__
+// Macro to use in assembler to get a preload. Needed because of various
+// workarounds needed to get working preload behaviour.
+//
+// Code using these macros needs to clobber x20 and x21 as they might be
+// used by the workaround.
+
+// "Correct" version
+#define ASM_PREFETCH(address) "PRFM PLDL1KEEP, " address "\n"
+#define ASM_PREFETCHL2(address) "PRFM PLDL2KEEP, " address "\n"
+#define ASM_PREFETCHW(address) "PRFM PSTL1KEEP, " address "\n"
+#define ASM_PREFETCHWL2(address) "PRFM PSTL2KEEP, " address "\n"
+
+// Lee's uarchsim hack
+//#define ASM_PREFETCH(address) "LDNP x20, x21, " address "\n"
+
+// No preload at all
+//#define ASM_PREFETCH(address) ""
+#else
+
+// "Correct" versions for AArch32
+#define ASM_PREFETCH(address) "PLD " address "\n"
+#define ASM_PREFETCHW(address) "PLDW " address "\n"
+
+#endif
+
+/*
+ * Do some prefetches.
+ */
+template <typename T>
+static inline void prefetch_6x(const T *pfp)
+{
+ __asm __volatile(
+ ASM_PREFETCH("[%[pfp]]")
+ ASM_PREFETCH("[%[pfp], #64]")
+ ASM_PREFETCH("[%[pfp], #128]")
+ ASM_PREFETCH("[%[pfp], #192]")
+ ASM_PREFETCH("[%[pfp], #256]")
+ ASM_PREFETCH("[%[pfp], #320]")
+ :
+ : [pfp] "r"(pfp)
+ : "memory");
+}
+
+template <typename T>
+static inline void prefetch_5x(const T *pfp)
+{
+ __asm __volatile(
+ ASM_PREFETCH("[%[pfp]]")
+ ASM_PREFETCH("[%[pfp], #64]")
+ ASM_PREFETCH("[%[pfp], #128]")
+ ASM_PREFETCH("[%[pfp], #192]")
+ ASM_PREFETCH("[%[pfp], #256]")
+ :
+ : [pfp] "r"(pfp)
+ : "memory");
+}
+
+template <typename T>
+static inline void prefetch_4x(const T *pfp)
+{
+ __asm __volatile(
+ ASM_PREFETCH("[%[pfp]]")
+ ASM_PREFETCH("[%[pfp], #64]")
+ ASM_PREFETCH("[%[pfp], #128]")
+ ASM_PREFETCH("[%[pfp], #192]")
+ :
+ : [pfp] "r"(pfp)
+ : "memory");
+}
+
+template <typename T>
+static inline void prefetch_3x(const T *pfp)
+{
+ __asm __volatile(
+ ASM_PREFETCH("[%[pfp]]")
+ ASM_PREFETCH("[%[pfp], #64]")
+ ASM_PREFETCH("[%[pfp], #128]")
+ :
+ : [pfp] "r"(pfp)
+ : "memory");
+}
+
+template <typename T>
+static inline void prefetch_2x(const T *pfp)
+{
+ __asm __volatile(
+ ASM_PREFETCH("[%[pfp]]")
+ ASM_PREFETCH("[%[pfp], #64]")
+ :
+ : [pfp] "r"(pfp)
+ : "memory");
+}
+
+template <typename T>
+static inline void prefetch_1x(const T *pfp)
+{
+ __asm __volatile(
+ ASM_PREFETCH("[%[pfp]]")
+ :
+ : [pfp] "r"(pfp)
+ : "memory");
+}