JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / bytecode / CallLinkStatus.cpp

diff --git a/bytecode/CallLinkStatus.cpp b/bytecode/CallLinkStatus.cpp
index 7f9e9ee8a83dc9e0a030f93855caa0a6e7cab712..509b15aaf2b0e85bcfa0642f92b5dff8786b2185 100644 (file)
--- a/bytecode/CallLinkStatus.cpp
+++ b/bytecode/CallLinkStatus.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
+ * Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -28,9 +28,59 @@
 
 #include "CodeBlock.h"
 #include "LLIntCallLinkInfo.h"
+#include "Operations.h"
+#include <wtf/CommaPrinter.h>
 
 namespace JSC {
 
+CallLinkStatus::CallLinkStatus(JSValue value)
+    : m_callTarget(value)
+    , m_executable(0)
+    , m_structure(0)
+    , m_couldTakeSlowPath(false)
+    , m_isProved(false)
+{
+    if (!value || !value.isCell())
+        return;
+    
+    m_structure = value.asCell()->structure();
+    
+    if (!value.asCell()->inherits(&JSFunction::s_info))
+        return;
+    
+    m_executable = jsCast<JSFunction*>(value.asCell())->executable();
+}
+
+JSFunction* CallLinkStatus::function() const
+{
+    if (!m_callTarget || !m_callTarget.isCell())
+        return 0;
+    
+    if (!m_callTarget.asCell()->inherits(&JSFunction::s_info))
+        return 0;
+    
+    return jsCast<JSFunction*>(m_callTarget.asCell());
+}
+
+InternalFunction* CallLinkStatus::internalFunction() const
+{
+    if (!m_callTarget || !m_callTarget.isCell())
+        return 0;
+    
+    if (!m_callTarget.asCell()->inherits(&InternalFunction::s_info))
+        return 0;
+    
+    return jsCast<InternalFunction*>(m_callTarget.asCell());
+}
+
+Intrinsic CallLinkStatus::intrinsicFor(CodeSpecializationKind kind) const
+{
+    if (!m_executable)
+        return NoIntrinsic;
+    
+    return m_executable->intrinsicFor(kind);
+}
+
 CallLinkStatus CallLinkStatus::computeFromLLInt(CodeBlock* profiledBlock, unsigned bytecodeIndex)
 {
     UNUSED_PARAM(profiledBlock);
@@ -39,9 +89,9 @@ CallLinkStatus CallLinkStatus::computeFromLLInt(CodeBlock* profiledBlock, unsign
     Instruction* instruction = profiledBlock->instructions().begin() + bytecodeIndex;
     LLIntCallLinkInfo* callLinkInfo = instruction[4].u.callLinkInfo;
     
-    return CallLinkStatus(callLinkInfo->lastSeenCallee.get(), false);
+    return CallLinkStatus(callLinkInfo->lastSeenCallee.get());
 #else
-    return CallLinkStatus(0, false);
+    return CallLinkStatus();
 #endif
 }
 
@@ -54,17 +104,49 @@ CallLinkStatus CallLinkStatus::computeFor(CodeBlock* profiledBlock, unsigned byt
         return computeFromLLInt(profiledBlock, bytecodeIndex);
     
     if (profiledBlock->couldTakeSlowCase(bytecodeIndex))
-        return CallLinkStatus(0, true);
+        return CallLinkStatus::takesSlowPath();
     
-    JSFunction* target = profiledBlock->getCallLinkInfo(bytecodeIndex).lastSeenCallee.get();
+    CallLinkInfo& callLinkInfo = profiledBlock->getCallLinkInfo(bytecodeIndex);
+    if (callLinkInfo.stub)
+        return CallLinkStatus(callLinkInfo.stub->executable(), callLinkInfo.stub->structure());
+    
+    JSFunction* target = callLinkInfo.lastSeenCallee.get();
     if (!target)
         return computeFromLLInt(profiledBlock, bytecodeIndex);
     
-    return CallLinkStatus(target, false);
+    if (callLinkInfo.hasSeenClosure)
+        return CallLinkStatus(target->executable(), target->structure());
+
+    return CallLinkStatus(target);
 #else
-    return CallLinkStatus(0, false);
+    return CallLinkStatus();
 #endif
 }
 
+void CallLinkStatus::dump(PrintStream& out) const
+{
+    if (!isSet()) {
+        out.print("Not Set");
+        return;
+    }
+    
+    CommaPrinter comma;
+    
+    if (m_isProved)
+        out.print(comma, "Statically Proved");
+    
+    if (m_couldTakeSlowPath)
+        out.print(comma, "Could Take Slow Path");
+    
+    if (m_callTarget)
+        out.print(comma, "Known target: ", m_callTarget);
+    
+    if (m_executable)
+        out.print(comma, "Executable/CallHash: ", RawPointer(m_executable), "/", m_executable->hashFor(CodeForCall));
+    
+    if (m_structure)
+        out.print(comma, "Structure: ", RawPointer(m_structure));
+}
+
 } // namespace JSC