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/gpu/GrResourceCache.cpp

diff --git a/src/gpu/GrResourceCache.cpp b/src/gpu/GrResourceCache.cpp
index 71e40f1..62360ed 100644
--- a/src/gpu/GrResourceCache.cpp
+++ b/src/gpu/GrResourceCache.cpp
@@ -11,9 +11,9 @@
 #include "GrCaps.h"
 #include "GrGpuResourceCacheAccess.h"
 #include "GrTracing.h"
-#include "SkChecksum.h"
 #include "SkGr.h"
 #include "SkMessageBus.h"
+#include "SkOpts.h"
 #include "SkTSort.h"
 
 DECLARE_SKMESSAGEBUS_MESSAGE(GrUniqueKeyInvalidatedMessage);
@@ -43,7 +43,7 @@
 }
 
 uint32_t GrResourceKeyHash(const uint32_t* data, size_t size) {
-    return SkChecksum::Murmur3(data, size);
+    return SkOpts::hash(data, size);
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -687,7 +687,7 @@
                 SkASSERT(SkBudgeted::kNo == resource->resourcePriv().isBudgeted() ||
                          uniqueKey.isValid());
                 if (!uniqueKey.isValid()) {
-                    ++fCouldBeScratch;                
+                    ++fCouldBeScratch;
                     SkASSERT(fScratchMap->countForKey(scratchKey));
                 }
                 SkASSERT(!resource->resourcePriv().refsWrappedObjects());