Add NEOVERSEV2 target support

Did a quick run around to make `TARGET=NEVOERSEV2` build successfully.

Fixes #5385

Makefile.arm64

@@ -1,3 +1,31 @@
+###############################################################################
+# Copyright (c) 2025, The OpenBLAS Project
+# All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name of the OpenBLAS project nor the names of
+#    its contributors may be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+###############################################################################
+
 ifneq ($(C_COMPILER), PGI)
 
 ifeq ($(C_COMPILER), CLANG)
@@ -183,10 +211,15 @@ endif
 
 # Detect ARM Neoverse V2.
 ifeq ($(CORE), NEOVERSEV2)
-ifeq (1, $(filter 1,$(GCCVERSIONGTEQ12) $(ISCLANG)))
-CCOMMON_OPT += -march=armv9-a -mtune=neoverse-v2
+ifeq (1, $(filter 1,$(GCCVERSIONGTEQ13) $(ISCLANG)))
+CCOMMON_OPT += -mcpu=neoverse-v2
+ifneq ($(F_COMPILER), NAG)
+FCOMMON_OPT += -mcpu=neoverse-v2
+endif
+else
+CCOMMON_OPT += -march=armv8.2-a+sve+bf16 -mtune=neoverse-n1
 ifneq ($(F_COMPILER), NAG)
-FCOMMON_OPT += -march=armv9-a -mtune=neoverse-v2
+FCOMMON_OPT += -march=armv8.2-a -mtune=neoverse-n1
 endif
 endif
 endif

cmake/cc.cmake

@@ -1,3 +1,30 @@
+###############################################################################
+# Copyright (c) 2025, The OpenBLAS Project
+# All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name of the OpenBLAS project nor the names of
+#    its contributors may be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+###############################################################################
 ##
 ## Author: Hank Anderson <hank@statease.com>
 ## Description: Ported from portion of OpenBLAS/Makefile.system
@@ -192,6 +219,24 @@ if (${CORE} STREQUAL A64FX)
   endif ()
 endif ()
 
+if (${CORE} STREQUAL NEOVERSEV2)
+	if (NOT DYNAMIC_ARCH)
+		if (${CMAKE_C_COMPILER_ID} STREQUAL "PGI" AND NOT NO_SVE)
+			set (CCOMMON_OPT  "${CCOMMON_OPT} -Msve_intrinsics -march=armv8.5-a+sve+sve2+bf16 -mtune=neoverse-v2")
+		elseif (${CMAKE_C_COMPILER_ID} STREQUAL "NVC" AND NOT NO_SVE)
+			set (CCOMMON_OPT  "${CCOMMON_OPT} -tp=neoverse-v2")
+		else ()
+			if (${GCC_VERSION} VERSION_GREATER 13.0 OR ${GCC_VERSION} VERSION_EQUAL 13.0)
+				set (CCOMMON_OPT  "${CCOMMON_OPT} -mcpu=neoverse-v2")
+			elseif (${GCC_VERSION} VERSION_GREATER 10.4 OR ${GCC_VERSION} VERSION_EQUAL 10.4)
+				set (CCOMMON_OPT  "${CCOMMON_OPT} -march=armv8.4-a+sve+bf16 -mtune=neoverse-v1")
+			else ()
+				set (CCOMMON_OPT "${CCOMMON_OPT} -march=armv8.2-a+sve+bf16")
+			endif()
+		endif ()
+	endif ()
+endif ()
+
 if (${CORE} STREQUAL NEOVERSEN2)
   if (NOT DYNAMIC_ARCH)
     if (${CMAKE_C_COMPILER_ID} STREQUAL "PGI" AND NOT NO_SVE)
@@ -199,10 +244,10 @@ if (${CORE} STREQUAL NEOVERSEN2)
     elseif (${CMAKE_C_COMPILER_ID} STREQUAL "NVC" AND NOT NO_SVE)
 	set (CCOMMON_OPT  "${CCOMMON_OPT} -tp=neoverse-v2")
     else ()
-      if (${GCC_VERSION} VERSION_GREATER 10.4 OR ${GCC_VERSION} VERSION_EQUAL 10.4)
+      if (${GCC_VERSION} VERSION_GREATER 11.1 OR ${GCC_VERSION} VERSION_EQUAL 11.1)
 	set (CCOMMON_OPT  "${CCOMMON_OPT} -march=armv8.5-a+sve+sve2+bf16 -mtune=neoverse-n2")
       else ()
-	set (CCOMMON_OPT "${CCOMMON_OPT} -march=armv8.2-a+sve")
+	set (CCOMMON_OPT "${CCOMMON_OPT} -march=armv8.2-a+sve+bf16")
       endif()
     endif ()
   endif ()

cmake/system.cmake

@@ -1,3 +1,30 @@
+###############################################################################
+# Copyright (c) 2025, The OpenBLAS Project
+# All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name of the OpenBLAS project nor the names of
+#    its contributors may be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+###############################################################################
 ##
 ## Author: Hank Anderson <hank@statease.com>
 ## Description: Ported from OpenBLAS/Makefile.system
@@ -311,6 +338,19 @@ if (${TARGET} STREQUAL NEOVERSEV1)
     endif()
     endif()
   endif()
+  if (${TARGET} STREQUAL NEOVERSEN2)
+    if (${CMAKE_C_COMPILER_ID} STREQUAL "PGI" AND NOT NO_SVE)
+	    set (KERNEL_DEFINITIONS  "${KERNEL_DEFINITIONS} -Msve-intrinsics -march=armv9-a+sve+sve2+bf16 -mtune=neoverse-v2")
+    else ()
+    if (CMAKE_C_COMPILER_VERSION VERSION_GREATER 13.0 OR CMAKE_C_COMPILER_VERSION VERSION_EQUAL 13.0)
+      set (KERNEL_DEFINITIONS  "${KERNEL_DEFINITIONS} -mcpu=neoverse-v2")
+    elseif (CMAKE_C_COMPILER_VERSION VERSION_GREATER 10.4 OR CMAKE_C_COMPILER_VERSION VERSION_EQUAL 10.4)
+      set (KERNEL_DEFINITIONS  "${KERNEL_DEFINITIONS} -march=armv8.4-a+sve+bf16 -mtune=neoverse-v1")
+    else ()
+	    message(FATAL_ERROR "Compiler $${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_VERSION} does not support Neoverse N2.")
+    endif()
+    endif()
+  endif()
   if (${TARGET} STREQUAL ARMV8SVE)
     if (${CMAKE_C_COMPILER_ID} STREQUAL "PGI" AND NOT NO_SVE)
       set (KERNEL_DEFINITIONS  "${KERNEL_DEFINITIONS} -Msve-intrinsics -march=armv8.2-a+sve")

getarch.c

@@ -1498,6 +1498,22 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define CORENAME  "NEOVERSEN2"
 #endif
 
+#ifdef FORCE_NEOVERSEV2
+#define FORCE
+#define ARCHITECTURE    "ARM64"
+#define SUBARCHITECTURE "NEOVERSEV2"
+#define SUBDIRNAME      "arm64"
+#define ARCHCONFIG   "-DNEOVERSEV2 " \
+       "-DL1_CODE_SIZE=65536 -DL1_CODE_LINESIZE=64 -DL1_CODE_ASSOCIATIVE=4 " \
+       "-DL1_DATA_SIZE=65536 -DL1_DATA_LINESIZE=64 -DL1_DATA_ASSOCIATIVE=4 " \
+       "-DL2_SIZE=1048576 -DL2_LINESIZE=64 -DL2_ASSOCIATIVE=16 " \
+       "-DDTB_DEFAULT_ENTRIES=64 -DDTB_SIZE=4096 " \
+       "-DHAVE_VFPV4 -DHAVE_VFPV3 -DHAVE_VFP -DHAVE_NEON -DHAVE_SVE -DARMV8 " \
+       "-mcpu=neoverse-v2"
+#define LIBNAME   "neoversev2"
+#define CORENAME  "NEOVERSEV2"
+#endif
+
 #ifdef FORCE_CORTEXA55
 #define FORCE
 #define ARCHITECTURE    "ARM64"

param.h

@@ -3636,7 +3636,7 @@ is a big desktop or server with abundant cache rather than a phone or embedded d
 #define CGEMM_DEFAULT_R 4096
 #define ZGEMM_DEFAULT_R 4096
 
-#elif defined(NEOVERSEN2)
+#elif defined(NEOVERSEN2) || defined(NEOVERSEV2)
 
 #if defined(XDOUBLE) || defined(DOUBLE)
 #define SWITCH_RATIO            8