Imported WebKit commit eb5c1b8fe4d4b1b90b5137433fc58a91da0e6878 (http://svn.webkit.org/repository/webkit/trunk@118516)

1 files changed, 123 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/dfg/DFGSilentRegisterSavePlan.h b/Source/JavaScriptCore/dfg/DFGSilentRegisterSavePlan.h
new file mode 100644
index 000000000..ab99b014d
--- /dev/null
+++ b/Source/JavaScriptCore/dfg/DFGSilentRegisterSavePlan.h
@@ -0,0 +1,123 @@
+/*
+ * 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 DFGSilentRegisterSavePlan_h
+#define DFGSilentRegisterSavePlan_h
+
+#include <wtf/Platform.h>
+
+#if ENABLE(DFG_JIT)
+
+#include "DFGCommon.h"
+#include "DFGFPRInfo.h"
+#include "DFGGPRInfo.h"
+
+namespace JSC { namespace DFG {
+
+enum SilentSpillAction {
+    DoNothingForSpill,
+    Store32Tag,
+    Store32Payload,
+    StorePtr,
+    StoreDouble
+};
+
+enum SilentFillAction {
+    DoNothingForFill,
+    SetInt32Constant,
+    SetBooleanConstant,
+    SetCellConstant,
+    SetTrustedJSConstant,
+    SetJSConstant,
+    SetJSConstantTag,
+    SetJSConstantPayload,
+    SetInt32Tag,
+    SetCellTag,
+    SetBooleanTag,
+    SetDoubleConstant,
+    Load32Tag,
+    Load32Payload,
+    Load32PayloadBoxInt,
+    LoadPtr,
+    LoadDouble,
+    LoadDoubleBoxDouble,
+    LoadJSUnboxDouble
+};
+
+class SilentRegisterSavePlan {
+public:
+    SilentRegisterSavePlan()
+        : m_spillAction(DoNothingForSpill)
+        , m_fillAction(DoNothingForFill)
+        , m_register(-1)
+        , m_nodeIndex(NoNode)
+    {
+    }
+    
+    SilentRegisterSavePlan(
+        SilentSpillAction spillAction,
+        SilentFillAction fillAction,
+        NodeIndex nodeIndex,
+        GPRReg gpr)
+        : m_spillAction(spillAction)
+        , m_fillAction(fillAction)
+        , m_register(gpr)
+        , m_nodeIndex(nodeIndex)
+    {
+    }
+    
+    SilentRegisterSavePlan(
+        SilentSpillAction spillAction,
+        SilentFillAction fillAction,
+        NodeIndex nodeIndex,
+        FPRReg fpr)
+        : m_spillAction(spillAction)
+        , m_fillAction(fillAction)
+        , m_register(fpr)
+        , m_nodeIndex(nodeIndex)
+    {
+    }
+    
+    SilentSpillAction spillAction() const { return static_cast<SilentSpillAction>(m_spillAction); }
+    SilentFillAction fillAction() const { return static_cast<SilentFillAction>(m_fillAction); }
+    
+    NodeIndex nodeIndex() const { return m_nodeIndex; }
+    
+    GPRReg gpr() const { return static_cast<GPRReg>(m_register); }
+    FPRReg fpr() const { return static_cast<FPRReg>(m_register); }
+    
+private:
+    int8_t m_spillAction;
+    int8_t m_fillAction;
+    int8_t m_register;
+    NodeIndex m_nodeIndex;
+};
+
+} } // namespace JSC::DFG
+
+#endif // ENABLE(DFG_JIT)
+
+#endif // DFGSilentRegisterSavePlan_h
+