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-rw-r--r--cmake/modules/SIMDExt.cmake99
1 files changed, 99 insertions, 0 deletions
diff --git a/cmake/modules/SIMDExt.cmake b/cmake/modules/SIMDExt.cmake
new file mode 100644
index 000000000..72f86e33b
--- /dev/null
+++ b/cmake/modules/SIMDExt.cmake
@@ -0,0 +1,99 @@
+# detect SIMD extensions
+#
+# 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)
+ include(CheckCCompilerFlag)
+
+ check_c_compiler_flag(-march=armv8-a+crc+crypto HAVE_ARMV8_CRC_CRYPTO_INTRINSICS)
+ if(HAVE_ARMV8_CRC_CRYPTO_INTRINSICS)
+ set(ARMV8_CRC_COMPILE_FLAGS "-march=armv8-a+crc+crypto")
+ set(HAVE_ARMV8_CRC TRUE)
+ set(HAVE_ARMV8_CRYPTO TRUE)
+ else()
+ check_c_compiler_flag(-march=armv8-a+crc HAVE_ARMV8_CRC)
+ check_c_compiler_flag(-march=armv8-a+crypto HAVE_ARMV8_CRYPTO)
+ if(HAVE_ARMV8_CRC)
+ set(ARMV8_CRC_COMPILE_FLAGS "-march=armv8-a+crc")
+ elseif(HAVE_ARMV8_CRYPTO)
+ set(ARMV8_CRC_COMPILE_FLAGS "-march=armv8-a+crypto")
+ endif()
+ 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)64|(powerpc|ppc)64le")
+ if(CMAKE_SYSTEM_PROCESSOR MATCHES "(powerpc|ppc)64le")
+ set(HAVE_PPC64LE 1)
+ message(STATUS " we are ppc64le")
+ else()
+ set(HAVE_PPC64 1)
+ message(STATUS " we are ppc64")
+ endif(CMAKE_SYSTEM_PROCESSOR MATCHES "(powerpc|ppc)64le")
+ CHECK_C_COMPILER_FLAG("-maltivec" HAS_ALTIVEC)
+ if(HAS_ALTIVEC)
+ message(STATUS " HAS_ALTIVEC yes")
+ add_compile_options(-maltivec)
+ endif()
+ CHECK_C_COMPILER_FLAG("-mcpu=power8" HAVE_POWER8)
+ if(HAVE_POWER8)
+ message(STATUS " HAVE_POWER8 yes")
+ endif()
+endif()