Imported WebKit commit 0dc6cd75e1d4836eaffbb520be96fac4847cc9d2 (http://svn.webkit.org/repository/webkit/trunk@131300)

WebKit update which introduces the QtWebKitWidgets module that contains the WK1
widgets based API. (In fact it renames QtWebKit to QtWebKitWidgets while we're
working on completing the entire split as part of
https://bugs.webkit.org/show_bug.cgi?id=99314

1 files changed, 158 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/bytecode/ByValInfo.h b/Source/JavaScriptCore/bytecode/ByValInfo.h
new file mode 100644
index 000000000..8cba4463d
--- /dev/null
+++ b/Source/JavaScriptCore/bytecode/ByValInfo.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2012 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef ByValInfo_h
+#define ByValInfo_h
+
+#include <wtf/Platform.h>
+
+#if ENABLE(JIT)
+
+#include "ClassInfo.h"
+#include "CodeLocation.h"
+#include "IndexingType.h"
+#include "JITStubRoutine.h"
+#include "Structure.h"
+
+namespace JSC {
+
+enum JITArrayMode {
+    JITContiguous,
+    JITArrayStorage,
+    JITInt8Array,
+    JITInt16Array,
+    JITInt32Array,
+    JITUint8Array,
+    JITUint8ClampedArray,
+    JITUint16Array,
+    JITUint32Array,
+    JITFloat32Array,
+    JITFloat64Array
+};
+
+inline bool isOptimizableIndexingType(IndexingType indexingType)
+{
+    switch (indexingType) {
+    case ALL_CONTIGUOUS_INDEXING_TYPES:
+    case ARRAY_WITH_ARRAY_STORAGE_INDEXING_TYPES:
+        return true;
+    default:
+        return false;
+    }
+}
+
+inline bool hasOptimizableIndexingForClassInfo(const ClassInfo* classInfo)
+{
+    return classInfo->typedArrayStorageType != TypedArrayNone;
+}
+
+inline bool hasOptimizableIndexing(Structure* structure)
+{
+    return isOptimizableIndexingType(structure->indexingType())
+        || hasOptimizableIndexingForClassInfo(structure->classInfo());
+}
+
+inline JITArrayMode jitArrayModeForIndexingType(IndexingType indexingType)
+{
+    switch (indexingType) {
+    case ALL_CONTIGUOUS_INDEXING_TYPES:
+        return JITContiguous;
+    case ARRAY_WITH_ARRAY_STORAGE_INDEXING_TYPES:
+        return JITArrayStorage;
+    default:
+        CRASH();
+        return JITContiguous;
+    }
+}
+
+inline JITArrayMode jitArrayModeForClassInfo(const ClassInfo* classInfo)
+{
+    switch (classInfo->typedArrayStorageType) {
+    case TypedArrayInt8:
+        return JITInt8Array;
+    case TypedArrayInt16:
+        return JITInt16Array;
+    case TypedArrayInt32:
+        return JITInt32Array;
+    case TypedArrayUint8:
+        return JITUint8Array;
+    case TypedArrayUint8Clamped:
+        return JITUint8ClampedArray;
+    case TypedArrayUint16:
+        return JITUint16Array;
+    case TypedArrayUint32:
+        return JITUint32Array;
+    case TypedArrayFloat32:
+        return JITFloat32Array;
+    case TypedArrayFloat64:
+        return JITFloat64Array;
+    default:
+        CRASH();
+        return JITContiguous;
+    }
+}
+
+inline JITArrayMode jitArrayModeForStructure(Structure* structure)
+{
+    if (isOptimizableIndexingType(structure->indexingType()))
+        return jitArrayModeForIndexingType(structure->indexingType());
+    
+    ASSERT(hasOptimizableIndexingForClassInfo(structure->classInfo()));
+    return jitArrayModeForClassInfo(structure->classInfo());
+}
+
+struct ByValInfo {
+    ByValInfo() { }
+    
+    ByValInfo(unsigned bytecodeIndex, CodeLocationJump badTypeJump, JITArrayMode arrayMode, int16_t badTypeJumpToDone, int16_t returnAddressToSlowPath)
+        : bytecodeIndex(bytecodeIndex)
+        , badTypeJump(badTypeJump)
+        , arrayMode(arrayMode)
+        , badTypeJumpToDone(badTypeJumpToDone)
+        , returnAddressToSlowPath(returnAddressToSlowPath)
+        , slowPathCount(0)
+    {
+    }
+    
+    unsigned bytecodeIndex;
+    CodeLocationJump badTypeJump;
+    JITArrayMode arrayMode; // The array mode that was baked into the inline JIT code.
+    int16_t badTypeJumpToDone;
+    int16_t returnAddressToSlowPath;
+    unsigned slowPathCount;
+    RefPtr<JITStubRoutine> stubRoutine;
+};
+
+inline unsigned getByValInfoBytecodeIndex(ByValInfo* info)
+{
+    return info->bytecodeIndex;
+}
+
+} // namespace JSC
+
+#endif // ENABLE(JIT)
+
+#endif // ByValInfo_h
+