commit 4e97607d9a1cef66fac16f347c5ca813ec4f9515
author mtklein <mtklein@chromium.org> Mon Aug 08 09:06:27 2016 -0700
committer Commit bot <commit-bot@chromium.org> Mon Aug 08 09:06:28 2016 -0700
tree e523cac97fae89a2abb1ec0d4c1fc87f86e3169f
parent 9a5a201472c3fb9f02b954ba09ae1ec13ebd50f4

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

src/pdf/SkPDFGraphicState.h

diff --git a/src/pdf/SkPDFGraphicState.h b/src/pdf/SkPDFGraphicState.h
index 84491ba..49723bd 100644
--- a/src/pdf/SkPDFGraphicState.h
+++ b/src/pdf/SkPDFGraphicState.h
@@ -10,7 +10,7 @@
 #define SkPDFGraphicState_DEFINED
 
 #include "SkPDFTypes.h"
-#include "SkChecksum.h"
+#include "SkOpts.h"
 
 class SkPaint;
 class SkPDFCanon;
@@ -63,7 +63,7 @@
     bool operator==(const SkPDFGraphicState& rhs) const {
         return 0 == memcmp(&fStrokeWidth, &rhs.fStrokeWidth, 12);
     }
-    uint32_t hash() const { return SkChecksum::Murmur3(&fStrokeWidth, 12); }
+    uint32_t hash() const { return SkOpts::hash(&fStrokeWidth, 12); }
 
 private:
     const SkScalar fStrokeWidth;