Use sse4.2 CRC32 instructions to hash when available.

src/gpu/vk/GrVkPipelineStateCache.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrVkResourceProvider.h"
 
 #include "GrVkGpu.h"
 #include "GrProcessor.h"
 #include "GrVkPipelineState.h"
 #include "GrVkPipelineStateBuilder.h"
 #include "SkRTConf.h"
+#include "SkOpts.h"
 #include "glsl/GrGLSLFragmentProcessor.h"
 #include "glsl/GrGLSLProgramDataManager.h"
 
 #ifdef GR_PIPELINE_STATE_CACHE_STATS
 SK_CONF_DECLARE(bool, c_DisplayVkPipelineCache, "gpu.displayyVkPipelineCache", false,
                 "Display pipeline state cache usage.");
 #endif
 
 struct GrVkResourceProvider::PipelineStateCache::Entry {
 
@@ skipping 81 matching lines @@
         GrCapsDebugf(fGpu->caps(), "Failed to build vk program descriptor!\n");
         return nullptr;
     }
 
     // Get vulkan specific descriptor key
     GrVkPipelineState::BuildStateKey(pipeline, primitiveType, &desc.fStateKey);
     // Get checksum of entire PipelineDesc
     int keyLength = desc.fStateKey.count();
     SkASSERT(0 == (keyLength % 4));
     // Seed the checksum with the checksum of the programDesc then add the vulkan key to it.
-    desc.fChecksum = SkChecksum::Murmur3(desc.fStateKey.begin(), keyLength,
-                                         desc.fProgramDesc.getChecksum());
+    desc.fChecksum = SkOpts::hash(desc.fStateKey.begin(), keyLength,
+                                  desc.fProgramDesc.getChecksum());
 
     Entry* entry = nullptr;
     if (Entry** entryptr = fHashTable.find(desc)) {
         SkASSERT(*entryptr);
         entry = *entryptr;
     }
     if (!entry) {
 #ifdef GR_PIPELINE_STATE_CACHE_STATS
         ++fCacheMisses;
 #endif
@@ skipping 20 matching lines @@
         entry->fPipelineState = std::move(pipelineState);
         fHashTable.set(entry);
         fLRUList.addToTail(entry);
         return entry->fPipelineState;
     } else {
         fLRUList.remove(entry);
         fLRUList.addToTail(entry);
     }
     return entry->fPipelineState;
 }