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| author |  mtklein <mtklein@chromium.org> | 2016-08-08 09:06:27 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2016-08-08 09:06:28 -0700 |
| commit | 4e97607d9a1cef66fac16f347c5ca813ec4f9515 (patch) | |
| tree | e523cac97fae89a2abb1ec0d4c1fc87f86e3169f /src/core/SkDescriptor.h | |
| parent | 9a5a201472c3fb9f02b954ba09ae1ec13ebd50f4 (diff) | |
Use sse4.2 CRC32 instructions to hash when available.
About 9x faster than Murmur3 for long inputs.
Most of this is a mechanical change from SkChecksum::Murmur3(...) to SkOpts::hash(...).
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2208903002
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot;master.client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac-Clang-x86_64-Release-CMake-Trybot
Review-Url: https://codereview.chromium.org/2208903002
Diffstat (limited to 'src/core/SkDescriptor.h')
| -rw-r--r-- | src/core/SkDescriptor.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/core/SkDescriptor.h b/src/core/SkDescriptor.h index 71f71336fd..efa02783be 100644 --- a/src/core/SkDescriptor.h +++ b/src/core/SkDescriptor.h @@ -9,7 +9,7 @@ #ifndef SkDescriptor_DEFINED #define SkDescriptor_DEFINED -#include "SkChecksum.h" +#include "SkOpts.h" #include "SkTypes.h" class SkDescriptor : SkNoncopyable { @@ -123,7 +123,7 @@ private: static uint32_t ComputeChecksum(const SkDescriptor* desc) { const uint32_t* ptr = (const uint32_t*)desc + 1; // skip the checksum field size_t len = desc->fLength - sizeof(uint32_t); - return SkChecksum::Murmur3(ptr, len); + return SkOpts::hash(ptr, len); } // private so no one can create one except our factories |