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| author | alkis <alkis@google.com> | 2017-06-06 01:05:05 -0700 |
|---|---|---|
| committer | Victor Costan <pwnall@chromium.org> | 2017-06-28 18:33:13 -0700 |
| commit | 18488d6212331fee647ecfded85353ab3ad91de8 (patch) | |
| tree | badc8a2a1525ba578d1eee56f611e67a1dc11651 | |
| parent | 7b9532b8781c5beaf99eef8ca7535d969a129d78 (diff) | |
| download | snappy-git-18488d6212331fee647ecfded85353ab3ad91de8.tar.gz | |
Use 64 bit little endian on ppc64le.
This has tangible performance benefits.
This lands https://github.com/google/snappy/pull/27
| -rw-r--r-- | snappy-internal.h | 5 | ||||
| -rw-r--r-- | snappy-stubs-internal.h | 4 |
2 files changed, 6 insertions, 3 deletions
diff --git a/snappy-internal.h b/snappy-internal.h index d2a22e8..0cccba1 100644 --- a/snappy-internal.h +++ b/snappy-internal.h @@ -80,9 +80,8 @@ char* CompressFragment(const char* input, // Does not read *(s1 + (s2_limit - s2)) or beyond. // Requires that s2_limit >= s2. // -// Separate implementation for x86_64, for speed. Uses the fact that -// x86_64 is little endian. -#if defined(ARCH_K8) +// Separate implementation for 64-bit, little-endian cpus. +#if defined(ARCH_K8) || (defined(ARCH_PPC) && !defined(WORDS_BIGENDIAN)) static inline std::pair<size_t, bool> FindMatchLength(const char* s1, const char* s2, const char* s2_limit) { diff --git a/snappy-stubs-internal.h b/snappy-stubs-internal.h index f818970..6979e1a 100644 --- a/snappy-stubs-internal.h +++ b/snappy-stubs-internal.h @@ -52,6 +52,10 @@ // Enable 64-bit optimized versions of some routines. #define ARCH_K8 1 +#elif defined(__ppc64__) + +#define ARCH_PPC 1 + #endif // Needed by OS X, among others. |