Rebase the patch to master

Change-Id: I3044a89bae619968e340636996f014a0134f1030 Signed-off-by: Yuqi Gu <yuqi.gu@arm.com>
apache · Nov 25, 2018 · 32f5f4f · 32f5f4f
1 parent e9c1317
commit 32f5f4f
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Showing 7 changed files with 509 additions and 949 deletions.
diff --git a/cpp/cmake_modules/SetupCxxFlags.cmake b/cpp/cmake_modules/SetupCxxFlags.cmake
@@ -231,6 +231,26 @@ if (APPLE)
   set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -stdlib=libc++")
 endif()
 
+if (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
+  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); }" ARROW_HAVE_ARMCE)
+  if (ARROW_HAVE_ARMCE)
+    message(STATUS " aarch64 CRC32 supported")
+  endif()
+
+  CHECK_CXX_COMPILER_FLAG("-march=armv8-a+crc" HAVE_ARMV8_CRC_INTRINSICS)
+  if (HAVE_ARMV8_CRC_INTRINSICS)
+    set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -march=armv8-a+crc")
+    message(STATUS " aarch64 CRC32 INTRINSICS supported")
+  endif()
+endif()
+
 # ----------------------------------------------------------------------
 # Setup Gold linker, if available. Code originally from Apache Kudu