Yazen Ghannam 60762338a2 crc32c: add aarch64 optimized crc32c implementation ... ARMv8 defines a set of optional CRC32/CRC32C instructions. This patch defines an optimized function that uses these instructions when available rather than table-based lookup. Optimized function based on a Hadoop patch by Ed Nevill. Autotools updated to check for compiler support. Optimized function is selected at runtime based on HWCAP_CRC32. Added crc32c "performance" unit test and arch unit test. Tested on AMD Seattle. Passes all crc32c unit tests. Unit test shows ~4x performance increase versus sctp. Signed-off-by: Yazen Ghannam <yazen.ghannam@linaro.org> Reviewed-by: Steve Capper <steve.capper@linaro.org>		2015-03-17 13:56:52 -05:00
..
ac_check_class.m4
ac_check_classpath.m4
ac_check_rqrd_class.m4
ac_java_options.m4
ac_prog_jar.m4
ac_prog_java_works.m4
ac_prog_java.m4
ac_prog_javac_works.m4
ac_prog_javac.m4	prioritise use of javac executable (gcj provides it through alternatives).	2014-05-12 14:08:44 +10:00
ac_prog_javah.m4
ac_try_compile_java.m4
ac_try_run_javac.m4
acx_pthread.m4
ax_arm.m4	crc32c: add aarch64 optimized crc32c implementation	2015-03-17 13:56:52 -05:00
ax_c_pretty_func.m4
ax_c_var_func.m4
ax_check_compile_flag.m4
ax_cxx_compile_stdcxx_11.m4	configure: verify c++11 is present for rocksdb	2014-07-31 21:11:24 -07:00
ax_cxx_static_cast.m4
ax_intel.m4