initial code repo

[stor4nfv.git] / src / ceph / cmake / modules / SIMDExt.cmake

diff --git a/src/ceph/cmake/modules/SIMDExt.cmake b/src/ceph/cmake/modules/SIMDExt.cmake
new file mode 100644 (file)
index 0000000..5330835
--- /dev/null
+++ b/src/ceph/cmake/modules/SIMDExt.cmake
@@ -0,0 +1,123 @@
+# detect SIMD extentions
+#
+# HAVE_ARMV8_CRC
+# HAVE_ARMV8_SIMD
+# HAVE_ARM_NEON
+# HAVE_INTEL_SSE
+# HAVE_INTEL_SSE2
+# HAVE_INTEL_SSE3
+# HAVE_INTEL_SSSE3
+# HAVE_INTEL_PCLMUL
+# HAVE_INTEL_SSE4_1
+# HAVE_INTEL_SSE4_2
+#
+# SIMD_COMPILE_FLAGS
+#
+
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
+  set(HAVE_ARM 1) 
+  set(save_quiet ${CMAKE_REQUIRED_QUIET})
+  set(CMAKE_REQUIRED_QUIET true)
+  include(CheckCXXSourceCompiles)
+
+  check_cxx_source_compiles("
+    #define CRC32CX(crc, value) __asm__(\"crc32cx %w[c], %w[c], %x[v]\":[c]\"+r\"(crc):[v]\"r\"(value))
+    asm(\".arch_extension crc\");
+    unsigned int foo(unsigned int ret) {
+      CRC32CX(ret, 0);
+      return ret;
+    }
+    int main() { foo(0); }" HAVE_ARMV8_CRC)
+    check_cxx_source_compiles("
+    asm(\".arch_extension crypto\");
+    unsigned int foo(unsigned int ret) {
+      __asm__(\"pmull  v2.1q,          v2.1d,  v1.1d\");
+      return ret;
+    }
+    int main() { foo(0); }" HAVE_ARMV8_CRYPTO)
+
+  set(CMAKE_REQUIRED_QUIET ${save_quiet})
+  if(HAVE_ARMV8_CRC)
+    message(STATUS " aarch64 crc extensions supported")
+  endif()
+
+  if(HAVE_ARMV8_CRYPTO)
+    message(STATUS " aarch64 crypto extensions supported")
+  endif()
+  CHECK_C_COMPILER_FLAG(-march=armv8-a+crc+crypto HAVE_ARMV8_CRC_CRYPTO_MARCH)
+
+  # don't believe only the -march support; gcc 4.8.5 on RHEL/CentOS says
+  # it supports +crc but hasn't got the intrinsics or arm_acle.h.  Test for
+  # the actual presence of one of the intrinsic functions.
+  if(HAVE_ARMV8_CRC_CRYPTO_MARCH)
+    check_cxx_source_compiles("
+      #include <inttypes.h>
+      int main() { uint32_t a; uint8_t b; __builtin_aarch64_crc32b(a, b); }
+    " HAVE_ARMV8_CRC_CRYPTO_INTRINSICS)
+  endif()
+
+  if(HAVE_ARMV8_CRC_CRYPTO_INTRINSICS)
+    message(STATUS " aarch64 crc+crypto intrinsics supported")
+    set(ARMV8_CRC_COMPILE_FLAGS "${ARMV8_CRC_COMPILE_FLAGS} -march=armv8-a+crc+crypto")
+  endif()
+
+  CHECK_C_COMPILER_FLAG(-march=armv8-a+simd HAVE_ARMV8_SIMD)
+  if(HAVE_ARMV8_SIMD)
+    set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -march=armv8-a+simd")
+  endif()
+
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm|ARM")
+  set(HAVE_ARM 1)
+  CHECK_C_COMPILER_FLAG(-mfpu=neon HAVE_ARM_NEON)
+  if(HAVE_ARM_NEON)
+    set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -mfpu=neon")
+  endif()
+
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i386|i686|amd64|x86_64|AMD64")
+  set(HAVE_INTEL 1)
+  if(CMAKE_SYSTEM_PROCESSOR MATCHES "i686|amd64|x86_64|AMD64")
+    CHECK_C_COMPILER_FLAG(-msse HAVE_INTEL_SSE)
+    if(HAVE_INTEL_SSE)
+      set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse")
+    endif()
+    if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64|x86_64|AMD64")
+      CHECK_C_COMPILER_FLAG(-msse2 HAVE_INTEL_SSE2)
+      if(HAVE_INTEL_SSE2)
+        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse2")
+      endif()
+      CHECK_C_COMPILER_FLAG(-msse3 HAVE_INTEL_SSE3)
+      if(HAVE_INTEL_SSE3)
+        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse3")
+      endif()
+      CHECK_C_COMPILER_FLAG(-mssse3 HAVE_INTEL_SSSE3)
+      if(HAVE_INTEL_SSSE3)
+        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -mssse3")
+      endif()
+      CHECK_C_COMPILER_FLAG(-mpclmul HAVE_INTEL_PCLMUL)
+      if(HAVE_INTEL_PCLMUL)
+        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -mpclmul")
+      endif()
+      CHECK_C_COMPILER_FLAG(-msse4.1 HAVE_INTEL_SSE4_1)
+      if(HAVE_INTEL_SSE4_1)
+        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse4.1")
+      endif()
+      CHECK_C_COMPILER_FLAG(-msse4.2 HAVE_INTEL_SSE4_2)
+      if(HAVE_INTEL_SSE4_2)
+        set(SIMD_COMPILE_FLAGS "${SIMD_COMPILE_FLAGS} -msse4.2")
+      endif()
+    endif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64|x86_64|AMD64")
+  endif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686|amd64|x86_64|AMD64")
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(powerpc|ppc)64le")
+  set(HAVE_PPC64LE 1)
+  message(STATUS " we are ppc64le")
+  CHECK_C_COMPILER_FLAG("-maltivec" HAS_ALTIVEC)
+  if(HAS_ALTIVEC)
+    message(STATUS " HAS_ALTIVEC yes")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -maltivec")
+    set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS} -maltivec")
+  endif()
+  CHECK_C_COMPILER_FLAG("-mcpu=power8" HAVE_POWER8)
+  if(HAVE_POWER8)
+    message(STATUS " HAVE_POWER8 yes")
+  endif()
+endif()