Changeset 153121 in webkit for trunk/Source/JavaScriptCore/ftl/FTLValueSource.h

Timestamp:

Jul 24, 2013, 8:58:38 PM (12 years ago)

Author:

[email protected]

Message:

fourthTier: Landing the initial FTL logic in a single commit to avoid spurious
broken builds.

Location:

trunk/Source/JavaScriptCore/ftl

Files:

• . (added)
• FTLValueSource.h (copied) (copied from trunk/Source/JavaScriptCore/dfg/DFGOSRExitCompilerCommon.h ) (1 diff)

trunk/Source/JavaScriptCore/ftl/FTLValueSource.h

@@ -24 +24 @@
  */
 
-#ifndef DFGOSRExitCompilerCommon_h
-#define DFGOSRExitCompilerCommon_h
+#ifndef FTLValueSource_h
+#define FTLValueSource_h
 
 #include <wtf/Platform.h>
 
-#if ENABLE(DFG_JIT)
+#if ENABLE(FTL_JIT)
 
-#include "DFGCCallHelpers.h"
-#include "DFGOSRExit.h"
+#include "DFGNode.h"
+#include <wtf/PrintStream.h>
+#include <wtf/StdLibExtras.h>
 
-namespace JSC { namespace DFG {
+namespace JSC { namespace FTL {
 
-void handleExitCounts(CCallHelpers&, const OSRExit&);
-void reifyInlinedCallFrames(CCallHelpers&, const OSRExit&);
-void adjustAndJumpToTarget(CCallHelpers&, const OSRExit&);
+enum ValueSourceKind {
+    SourceNotSet,
+    ValueInJSStack,
+    Int32InJSStack,
+    DoubleInJSStack,
+    ValueInLocals,
+    Int32InLocals,
+    BooleanInLocals,
+    DoubleInLocals,
+    ArgumentsSource,
+    SourceIsDead,
+    HaveNode
+};
 
-} } // namespace JSC::DFG
+class ValueSource {
+public:
+    ValueSource()
+        : m_value(SourceNotSet)
+    {
+    }
+    
+    explicit ValueSource(ValueSourceKind kind)
+        : m_value(kind)
+    {
+    }
+    
+    explicit ValueSource(DFG::Node* node)
+        : m_value(bitwise_cast<uintptr_t>(node))
+    {
+    }
+    
+    ValueSourceKind kind() const
+    {
+        if (m_value < static_cast<uintptr_t>(HaveNode))
+            return static_cast<ValueSourceKind>(m_value);
+        return HaveNode;
+    }
+    
+    bool operator!() const { return kind() != SourceNotSet; }
+    
+    DFG::Node* node() const
+    {
+        ASSERT(kind() == HaveNode);
+        return bitwise_cast<DFG::Node*>(m_value);
+    }
+    
+    void dump(PrintStream&) const;
 
-#endif // ENABLE(DFG_JIT)
+private:
+    uintptr_t m_value;
+};
 
-#endif // DFGOSRExitCompilerCommon_h
+} } // namespace JSC::FTL
 
+#endif // ENABLE(FTL_JIT)
+
+#endif // FTLValueSource_h
+