| commit | 3e3bf50d564e229f6da2a7a3ed7bff7ba0f81701 | |
| author | Bin Liu <binliu@fb.com> | |
| Thu, 22 Jan 2015 18:38:29 +0000 (22 10:38 -0800) | ||
| committer | JoelMarcey <joelm@fb.com> | |
| Thu, 22 Jan 2015 23:58:57 +0000 (22 15:58 -0800) | ||
| tree | 06616ec5973336274248110de31f981f0dc9522b | treesnapshot (tar.gz zip) |
| parent | d4b589108c77c392fb5f91e4c245618e1e69ef16 | commitdiff |
modify hash_string* code to use CRC32
Summary: When USE_SSECRC flag is defined (always for x86_64 unless NO_SSECRC is defined),
we try to use CRC32 hash functions.
A cpuid check is done, if SSE4.2 is not available, the fallback implementation uses MururHash.
If NO_SSECRC is defined, we won't have the overhead of cpuid checking and generates
more compact code.
Reviewed By: @markw65
Differential Revision: D1776398
Summary: When USE_SSECRC flag is defined (always for x86_64 unless NO_SSECRC is defined),
we try to use CRC32 hash functions.
A cpuid check is done, if SSE4.2 is not available, the fallback implementation uses MururHash.
If NO_SSECRC is defined, we won't have the overhead of cpuid checking and generates
more compact code.
Reviewed By: @markw65
Differential Revision: D1776398
16 files changed: