1 files changed, 77 insertions, 13 deletions

diff --git a/Source/JavaScriptCore/bytecode/ByValInfo.h b/Source/JavaScriptCore/bytecode/ByValInfo.h
index 35fae0c60..e5fa70858 100644
--- a/Source/JavaScriptCore/bytecode/ByValInfo.h
+++ b/Source/JavaScriptCore/bytecode/ByValInfo.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
+ * Copyright (C) 2012, 2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -23,26 +23,30 @@
  * 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)
+#pragma once
 
 #include "ClassInfo.h"
 #include "CodeLocation.h"
+#include "CodeOrigin.h"
 #include "IndexingType.h"
 #include "JITStubRoutine.h"
 #include "Structure.h"
 
 namespace JSC {
 
+class Symbol;
+
+#if ENABLE(JIT)
+
+class StructureStubInfo;
+
 enum JITArrayMode {
     JITInt32,
     JITDouble,
     JITContiguous,
     JITArrayStorage,
+    JITDirectArguments,
+    JITScopedArguments,
     JITInt8Array,
     JITInt16Array,
     JITInt32Array,
@@ -67,6 +71,17 @@ inline bool isOptimizableIndexingType(IndexingType indexingType)
     }
 }
 
+inline bool hasOptimizableIndexingForJSType(JSType type)
+{
+    switch (type) {
+    case DirectArgumentsType:
+    case ScopedArgumentsType:
+        return true;
+    default:
+        return false;
+    }
+}
+
 inline bool hasOptimizableIndexingForClassInfo(const ClassInfo* classInfo)
 {
     return isTypedView(classInfo->typedArrayStorageType);
@@ -75,6 +90,7 @@ inline bool hasOptimizableIndexingForClassInfo(const ClassInfo* classInfo)
 inline bool hasOptimizableIndexing(Structure* structure)
 {
     return isOptimizableIndexingType(structure->indexingType())
+        || hasOptimizableIndexingForJSType(structure->typeInfo().type())
         || hasOptimizableIndexingForClassInfo(structure->classInfo());
 }
 
@@ -95,6 +111,19 @@ inline JITArrayMode jitArrayModeForIndexingType(IndexingType indexingType)
     }
 }
 
+inline JITArrayMode jitArrayModeForJSType(JSType type)
+{
+    switch (type) {
+    case DirectArgumentsType:
+        return JITDirectArguments;
+    case ScopedArgumentsType:
+        return JITScopedArguments;
+    default:
+        RELEASE_ASSERT_NOT_REACHED();
+        return JITContiguous;
+    }
+}
+
 inline JITArrayMode jitArrayModeForClassInfo(const ClassInfo* classInfo)
 {
     switch (classInfo->typedArrayStorageType) {
@@ -122,6 +151,19 @@ inline JITArrayMode jitArrayModeForClassInfo(const ClassInfo* classInfo)
     }
 }
 
+inline bool jitArrayModePermitsPut(JITArrayMode mode)
+{
+    switch (mode) {
+    case JITDirectArguments:
+    case JITScopedArguments:
+        // We could support put_by_val on these at some point, but it's just not that profitable
+        // at the moment.
+        return false;
+    default:
+        return true;
+    }
+}
+
 inline TypedArrayType typedArrayTypeForJITArrayMode(JITArrayMode mode)
 {
     switch (mode) {
@@ -154,30 +196,49 @@ inline JITArrayMode jitArrayModeForStructure(Structure* structure)
     if (isOptimizableIndexingType(structure->indexingType()))
         return jitArrayModeForIndexingType(structure->indexingType());
     
+    if (hasOptimizableIndexingForJSType(structure->typeInfo().type()))
+        return jitArrayModeForJSType(structure->typeInfo().type());
+    
     ASSERT(hasOptimizableIndexingForClassInfo(structure->classInfo()));
     return jitArrayModeForClassInfo(structure->classInfo());
 }
 
 struct ByValInfo {
     ByValInfo() { }
-    
-    ByValInfo(unsigned bytecodeIndex, CodeLocationJump badTypeJump, JITArrayMode arrayMode, int16_t badTypeJumpToDone, int16_t returnAddressToSlowPath)
+
+    ByValInfo(unsigned bytecodeIndex, CodeLocationJump notIndexJump, CodeLocationJump badTypeJump, CodeLocationLabel exceptionHandler, JITArrayMode arrayMode, ArrayProfile* arrayProfile, int16_t badTypeJumpToDone, int16_t badTypeJumpToNextHotPath, int16_t returnAddressToSlowPath)
         : bytecodeIndex(bytecodeIndex)
+        , notIndexJump(notIndexJump)
         , badTypeJump(badTypeJump)
+        , exceptionHandler(exceptionHandler)
         , arrayMode(arrayMode)
+        , arrayProfile(arrayProfile)
         , badTypeJumpToDone(badTypeJumpToDone)
+        , badTypeJumpToNextHotPath(badTypeJumpToNextHotPath)
         , returnAddressToSlowPath(returnAddressToSlowPath)
         , slowPathCount(0)
+        , stubInfo(nullptr)
+        , tookSlowPath(false)
+        , seen(false)
     {
     }
-    
+
     unsigned bytecodeIndex;
+    CodeLocationJump notIndexJump;
     CodeLocationJump badTypeJump;
+    CodeLocationLabel exceptionHandler;
     JITArrayMode arrayMode; // The array mode that was baked into the inline JIT code.
+    ArrayProfile* arrayProfile;
     int16_t badTypeJumpToDone;
+    int16_t badTypeJumpToNextHotPath;
     int16_t returnAddressToSlowPath;
     unsigned slowPathCount;
     RefPtr<JITStubRoutine> stubRoutine;
+    Identifier cachedId;
+    WriteBarrier<Symbol> cachedSymbol;
+    StructureStubInfo* stubInfo;
+    bool tookSlowPath : 1;
+    bool seen : 1;
 };
 
 inline unsigned getByValInfoBytecodeIndex(ByValInfo* info)
@@ -185,9 +246,12 @@ inline unsigned getByValInfoBytecodeIndex(ByValInfo* info)
     return info->bytecodeIndex;
 }
 
-} // namespace JSC
+typedef HashMap<CodeOrigin, ByValInfo*, CodeOriginApproximateHash> ByValInfoMap;
 
-#endif // ENABLE(JIT)
+#else // ENABLE(JIT)
+
+typedef HashMap<int, void*> ByValInfoMap;
 
-#endif // ByValInfo_h
+#endif // ENABLE(JIT)
 
+} // namespace JSC