1 files changed, 16 insertions, 86 deletions

diff --git a/Source/JavaScriptCore/bytecode/CallLinkInfo.cpp b/Source/JavaScriptCore/bytecode/CallLinkInfo.cpp
index 0579d4250..a4baa6100 100644
--- a/Source/JavaScriptCore/bytecode/CallLinkInfo.cpp
+++ b/Source/JavaScriptCore/bytecode/CallLinkInfo.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 2013, 2014 Apple Inc. All rights reserved.
+ * 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
@@ -26,105 +26,35 @@
 #include "config.h"
 #include "CallLinkInfo.h"
 
-#include "CallFrameShuffleData.h"
 #include "DFGOperations.h"
 #include "DFGThunks.h"
-#include "JSCInlines.h"
-#include "Repatch.h"
-#include <wtf/ListDump.h>
-#include <wtf/NeverDestroyed.h>
+#include "RepatchBuffer.h"
 
 #if ENABLE(JIT)
 namespace JSC {
 
-CallLinkInfo::CallLinkInfo()
-    : m_hasSeenShouldRepatch(false)
-    , m_hasSeenClosure(false)
-    , m_clearedByGC(false)
-    , m_allowStubs(true)
-    , m_callType(None)
-    , m_maxNumArguments(0)
-    , m_slowPathCount(0)
+void CallLinkInfo::unlink(VM& vm, RepatchBuffer& repatchBuffer)
 {
-}
-
-CallLinkInfo::~CallLinkInfo()
-{
-    clearStub();
-    
-    if (isOnList())
-        remove();
-}
-
-void CallLinkInfo::clearStub()
-{
-    if (!stub())
-        return;
-
-    m_stub->clearCallNodesFor(this);
-    m_stub = nullptr;
-}
-
-void CallLinkInfo::unlink(VM& vm)
-{
-    if (!isLinked()) {
-        // We could be called even if we're not linked anymore because of how polymorphic calls
-        // work. Each callsite within the polymorphic call stub may separately ask us to unlink().
-        RELEASE_ASSERT(!isOnList());
-        return;
-    }
+    ASSERT(isLinked());
     
-    unlinkFor(vm, *this);
+    repatchBuffer.revertJumpReplacementToBranchPtrWithPatch(RepatchBuffer::startOfBranchPtrWithPatchOnRegister(hotPathBegin), static_cast<MacroAssembler::RegisterID>(calleeGPR), 0);
+    if (isDFG) {
+#if ENABLE(DFG_JIT)
+        repatchBuffer.relink(callReturnLocation, (callType == Construct ? vm.getCTIStub(linkConstructThunkGenerator) : vm.getCTIStub(linkCallThunkGenerator)).code());
+#else
+        RELEASE_ASSERT_NOT_REACHED();
+#endif
+    } else
+        repatchBuffer.relink(callReturnLocation, callType == Construct ? vm.getCTIStub(linkConstructThunkGenerator).code() : vm.getCTIStub(linkCallThunkGenerator).code());
+    hasSeenShouldRepatch = false;
+    callee.clear();
+    stub.clear();
 
     // It will be on a list if the callee has a code block.
     if (isOnList())
         remove();
 }
 
-void CallLinkInfo::visitWeak(VM& vm)
-{
-    auto handleSpecificCallee = [&] (JSFunction* callee) {
-        if (Heap::isMarked(callee->executable()))
-            m_hasSeenClosure = true;
-        else
-            m_clearedByGC = true;
-    };
-    
-    if (isLinked()) {
-        if (stub()) {
-            if (!stub()->visitWeak(vm)) {
-                if (Options::verboseOSR()) {
-                    dataLog(
-                        "Clearing closure call to ",
-                        listDump(stub()->variants()), ", stub routine ", RawPointer(stub()),
-                        ".\n");
-                }
-                unlink(vm);
-                m_clearedByGC = true;
-            }
-        } else if (!Heap::isMarked(m_callee.get())) {
-            if (Options::verboseOSR()) {
-                dataLog(
-                    "Clearing call to ",
-                    RawPointer(m_callee.get()), " (",
-                    m_callee.get()->executable()->hashFor(specializationKind()),
-                    ").\n");
-            }
-            handleSpecificCallee(m_callee.get());
-            unlink(vm);
-        }
-    }
-    if (haveLastSeenCallee() && !Heap::isMarked(lastSeenCallee())) {
-        handleSpecificCallee(lastSeenCallee());
-        clearLastSeenCallee();
-    }
-}
-
-void CallLinkInfo::setFrameShuffleData(const CallFrameShuffleData& shuffleData)
-{
-    m_frameShuffleData = std::make_unique<CallFrameShuffleData>(shuffleData);
-}
-
 } // namespace JSC
 #endif // ENABLE(JIT)