introduce xbyak

CMakeLists.txt

@@ -160,6 +160,7 @@ endif()
 ########################################################################################
 
 include(external/mklml)     # download mklml package
+include(external/xbyak)     # download xbyak package
 include(external/libxsmm)   # download, build, install libxsmm
 include(external/zlib)      # download, build, install zlib
 include(external/gflags)    # download, build, install gflags

cmake/external/xbyak.cmake

@@ -0,0 +1,58 @@
+# Copyright (c) 2017 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set(WITH_XBYAK ON)
+if(WIN32 OR APPLE)
+    SET(WITH_XBYAK OFF CACHE STRING "Disable XBYAK in Windows and MacOS" FORCE)
+    return()
+endif()
+
+include(ExternalProject)
+
+set(XBYAK_PROJECT       extern_xbyak)
+set(XBYAK_PREFIX_DIR    ${THIRD_PARTY_PATH}/xbyak)
+set(XBYAK_INSTALL_ROOT  ${THIRD_PARTY_PATH}/install/xbyak)
+set(XBYAK_INC_DIR       ${XBYAK_INSTALL_ROOT}/include)
+
+include_directories(${XBYAK_INC_DIR})
+include_directories(${XBYAK_INC_DIR}/xbyak)
+
+add_definitions(-DPADDLE_WITH_XBYAK)
+
+# xbyak options
+add_definitions(-DXBYAK64)
+add_definitions(-DXBYAK_NO_OP_NAMES)
+
+ExternalProject_Add(
+    ${XBYAK_PROJECT}
+    ${EXTERNAL_PROJECT_LOG_ARGS}
+    DEPENDS             ""
+    GIT_REPOSITORY      "https://github.com/herumi/xbyak.git"
+    GIT_TAG             "v5.661"  # Jul 26th
+    PREFIX              ${XBYAK_PREFIX_DIR}
+    UPDATE_COMMAND      ""
+    CMAKE_ARGS          -DCMAKE_INSTALL_PREFIX=${XBYAK_INSTALL_ROOT}
+    CMAKE_CACHE_ARGS    -DCMAKE_INSTALL_PREFIX:PATH=${XBYAK_INSTALL_ROOT}
+)
+
+if (${CMAKE_VERSION} VERSION_LESS "3.3.0")
+    set(dummyfile ${CMAKE_CURRENT_BINARY_DIR}/xbyak_dummy.c)
+    file(WRITE ${dummyfile} "const char *dummy_xbyak = \"${dummyfile}\";")
+    add_library(xbyak STATIC ${dummyfile})
+else()
+    add_library(xbyak INTERFACE)
+endif()
+
+add_dependencies(xbyak ${XBYAK_PROJECT})
+list(APPEND external_project_dependencies xbyak)

paddle/fluid/platform/CMakeLists.txt

@@ -18,7 +18,11 @@ else()
 endif()
 cc_test(enforce_test SRCS enforce_test.cc DEPS stringpiece enforce)
 
-cc_library(cpu_info SRCS cpu_info.cc DEPS gflags glog enforce)
+set(CPU_INFO_DEPS gflags glog enforce)
+IF(WITH_XBYAK)
+    list(APPEND CPU_INFO_DEPS xbyak)
+ENDIF()
+cc_library(cpu_info SRCS cpu_info.cc DEPS ${CPU_INFO_DEPS})
 cc_test(cpu_info_test SRCS cpu_info_test.cc DEPS cpu_info)
 
 nv_library(gpu_info SRCS gpu_info.cc DEPS gflags glog enforce)

paddle/fluid/platform/cpu_info.cc

@@ -13,6 +13,8 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/fluid/platform/cpu_info.h"
+#include "xbyak/xbyak.h"
+#include "xbyak/xbyak_util.h"
 
 #ifdef __APPLE__
 #include <sys/sysctl.h>
@@ -98,5 +100,39 @@ size_t CUDAPinnedMaxChunkSize() {
   return CUDAPinnedMaxAllocSize() / 256;
 }
 
+#ifdef PADDLE_WITH_XBYAK
+namespace jit {
+
+static Xbyak::util::Cpu cpu;
+bool MayIUse(const cpu_isa_t cpu_isa) {
+  using namespace Xbyak::util;  // NOLINT
+  switch (cpu_isa) {
+    case sse42:
+      return cpu.has(Cpu::tSSE42);
+    case avx2:
+      return cpu.has(Cpu::tAVX2);
+    case avx512_common:
+      return cpu.has(Cpu::tAVX512F);
+    case avx512_core:
+      return true && cpu.has(Cpu::tAVX512F) && cpu.has(Cpu::tAVX512BW) &&
+             cpu.has(Cpu::tAVX512VL) && cpu.has(Cpu::tAVX512DQ);
+    case avx512_core_vnni:
+      return true && cpu.has(Cpu::tAVX512F) && cpu.has(Cpu::tAVX512BW) &&
+             cpu.has(Cpu::tAVX512VL) && cpu.has(Cpu::tAVX512DQ) &&
+             cpu.has(Cpu::tAVX512_VNNI);
+    case avx512_mic:
+      return true && cpu.has(Cpu::tAVX512F) && cpu.has(Cpu::tAVX512CD) &&
+             cpu.has(Cpu::tAVX512ER) && cpu.has(Cpu::tAVX512PF);
+    case avx512_mic_4ops:
+      return true && MayIUse(avx512_mic) && cpu.has(Cpu::tAVX512_4FMAPS) &&
+             cpu.has(Cpu::tAVX512_4VNNIW);
+    case isa_any:
+      return true;
+  }
+  return false;
+}
+
+}  // namespace jit
+#endif
 }  // namespace platform
 }  // namespace paddle

paddle/fluid/platform/cpu_info.h

@@ -37,5 +37,25 @@ size_t CUDAPinnedMinChunkSize();
 //! Get the maximum chunk size for buddy allocator.
 size_t CUDAPinnedMaxChunkSize();
 
+#ifdef PADDLE_WITH_XBYAK
+namespace jit {
+
+typedef enum {
+  isa_any,
+  sse42,
+  avx2,
+  avx512_common,
+  avx512_core,
+  avx512_core_vnni,
+  avx512_mic,
+  avx512_mic_4ops,
+} cpu_isa_t;  // Instruction set architecture
+
+// May I use some instruction
+inline bool MayIUse(const cpu_isa_t cpu_isa);
+
+}  // namespace jit
+#endif
+
 }  // namespace platform
 }  // namespace paddle