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Kefu Chai ba3c58cab6 specify SSE42 'target' attribute for Fast_CRC32() 
Summary:
if we enable SSE42 globally when compiling the tree for preparing a
portable binary, which could be running on CPU w/o SSE42 instructions
even the GCC on the building host is able to emit SSE42 code, this leads
to illegal instruction errors on machines not supporting SSE42. to solve
this problem, crc32 detects the supported instruction at runtime, and
selects the supported CRC32 implementation according to the result of
`cpuid`. but intrinics like "_mm_crc32_u64()" will not be available
unless the "target" machine is appropriately specified in the command
line, like "-msse42", or using the "target" attribute.

we could pass "-msse42" only when compiling crc32c.cc, and allow the
compiler to generate the SSE42 instructions, but we are still at the
risk of executing illegal instructions on machines does not support
SSE42 if the compiler emits code that is not guarded by our runtime
detection. and we need to do the change in both Makefile and CMakefile.

or, we can use GCC's "target" attribute to enable the machine specific
instructions on certain function. in this way, we have finer grained
control of the used "target". and no need to change the makefiles. so
we don't need to duplicate the changes on both makefile and cmake as
the previous approach.

this problem surfaces when preparing a package for GNU/Linux distribution,
and we only applies to optimization for SSE42, so using a feature
only available on GCC/Clang is not that formidable.
Closes https://github.com/facebook/rocksdb/pull/2807

Differential Revision: D5786084

Pulled By: siying

fbshipit-source-id: bca5c0f877b8d6fb55f58f8f122254a26422843d
 		2017-09-07 12:40:57 -07:00
..
aligned_buffer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
allocator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
arena.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
arena.h Prevent empty memtables from using a lot of memory 2017-07-28 15:58:43 -07:00
arena_test.cc Prevent empty memtables from using a lot of memory 2017-07-28 15:58:43 -07:00
auto_roll_logger.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
auto_roll_logger.h Change RocksDB License 2017-07-15 16:11:23 -07:00
auto_roll_logger_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
autovector.h Change RocksDB License 2017-07-15 16:11:23 -07:00
autovector_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
bloom.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
bloom_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
build_version.cc.in Makefile: generate util/build_version.cc from .in file (#1384) 2016-10-25 11:31:39 -07:00
build_version.h Change RocksDB License 2017-07-15 16:11:23 -07:00
cast_util.h Add a missing "once" in .h 2017-07-31 12:12:03 -07:00
channel.h Change RocksDB License 2017-07-15 16:11:23 -07:00
coding.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
coding.h Change RocksDB License 2017-07-15 16:11:23 -07:00
coding_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compaction_job_stats_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
comparator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
compression.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
concurrent_arena.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
concurrent_arena.h Prevent empty memtables from using a lot of memory 2017-07-28 15:58:43 -07:00
core_local.h Change RocksDB License 2017-07-15 16:11:23 -07:00
crc32c.cc specify SSE42 'target' attribute for Fast_CRC32() 2017-09-07 12:40:57 -07:00
crc32c.h Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
crc32c_ppc.c Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
crc32c_ppc.h Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
crc32c_ppc_asm.S Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
crc32c_ppc_constants.h Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
crc32c_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
delete_scheduler.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
delete_scheduler.h Change RocksDB License 2017-07-15 16:11:23 -07:00
delete_scheduler_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
dynamic_bloom.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
dynamic_bloom.h Change RocksDB License 2017-07-15 16:11:23 -07:00
dynamic_bloom_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
event_logger.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
event_logger.h Change RocksDB License 2017-07-15 16:11:23 -07:00
event_logger_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
fault_injection_test_env.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
fault_injection_test_env.h Change RocksDB License 2017-07-15 16:11:23 -07:00
file_reader_writer.cc Support prefetch last 512KB with direct I/O in block based file reader 2017-08-11 12:16:45 -07:00
file_reader_writer.h Support prefetch last 512KB with direct I/O in block based file reader 2017-08-11 12:16:45 -07:00
file_reader_writer_test.cc Fix LITE unit tests 2017-07-26 21:11:47 -07:00
file_util.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
file_util.h Change RocksDB License 2017-07-15 16:11:23 -07:00
filelock_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
filename.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
filename.h Change RocksDB License 2017-07-15 16:11:23 -07:00
filter_policy.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
hash.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
hash.h Change RocksDB License 2017-07-15 16:11:23 -07:00
hash_map.h Change RocksDB License 2017-07-15 16:11:23 -07:00
hash_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
heap.h Change RocksDB License 2017-07-15 16:11:23 -07:00
heap_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
kv_map.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_buffer.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
log_buffer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_write_bench.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
logging.h Change RocksDB License 2017-07-15 16:11:23 -07:00
memory_usage.h Change RocksDB License 2017-07-15 16:11:23 -07:00
mpsc.h Change RocksDB License 2017-07-15 16:11:23 -07:00
murmurhash.cc gcc-7/i386: markup intentional fallthroughs 2017-08-08 08:56:52 -07:00
murmurhash.h Change RocksDB License 2017-07-15 16:11:23 -07:00
mutexlock.h Change RocksDB License 2017-07-15 16:11:23 -07:00
ppc-opcode.h Updated CRC32 Power Optimization Changes 2017-08-31 14:16:30 -07:00
random.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
random.h Change RocksDB License 2017-07-15 16:11:23 -07:00
rate_limiter.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
rate_limiter.h Change RocksDB License 2017-07-15 16:11:23 -07:00
rate_limiter_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
slice.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
slice_transform_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
sst_file_manager_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
sst_file_manager_impl.h Change RocksDB License 2017-07-15 16:11:23 -07:00
status.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
status_message.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
stderr_logger.h Change RocksDB License 2017-07-15 16:11:23 -07:00
stop_watch.h Change RocksDB License 2017-07-15 16:11:23 -07:00
string_util.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
string_util.h Change RocksDB License 2017-07-15 16:11:23 -07:00
sync_point.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
sync_point.h Add more unit test to write_prepared txns 2017-08-31 09:41:27 -07:00
testharness.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
testharness.h Change RocksDB License 2017-07-15 16:11:23 -07:00
testutil.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
testutil.h Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
thread_list_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
thread_local.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
thread_local.h Change RocksDB License 2017-07-15 16:11:23 -07:00
thread_local_test.cc Revert "comment out unused parameters" 2017-07-21 18:26:26 -07:00
thread_operation.h Change RocksDB License 2017-07-15 16:11:23 -07:00
threadpool_imp.cc Introduce bottom-pri thread pool for large universal compactions 2017-08-03 15:43:29 -07:00
threadpool_imp.h Change RocksDB License 2017-07-15 16:11:23 -07:00
timer_queue.h Change RocksDB License 2017-07-15 16:11:23 -07:00
timer_queue_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
transaction_test_util.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
transaction_test_util.h Change RocksDB License 2017-07-15 16:11:23 -07:00
xxhash.cc fixed typo 2017-06-05 11:27:34 -07:00
xxhash.h Prevent xxhash symbols from polluting global namespace 2015-03-12 12:07:10 -07:00