webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

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diff --git a/Source/JavaScriptCore/jit/CachedRecovery.cpp b/Source/JavaScriptCore/jit/CachedRecovery.cpp
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+++ b/Source/JavaScriptCore/jit/CachedRecovery.cpp
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+/*
+ * Copyright (C) 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
+ * 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. 
+ */
+
+#include "config.h"
+#include "CachedRecovery.h"
+
+#if ENABLE(JIT)
+
+namespace JSC {
+
+// We prefer loading doubles and undetermined JSValues into FPRs
+// because it would otherwise use up GPRs.  Two in JSVALUE32_64.
+bool CachedRecovery::loadsIntoFPR() const
+{
+    switch (recovery().technique()) {
+    case DoubleDisplacedInJSStack:
+    case DisplacedInJSStack:
+#if USE(JSVALUE64)
+    case CellDisplacedInJSStack:
+#endif
+        return true;
+
+    default:
+        return false;
+    }
+}
+
+// Integers, booleans and cells can be loaded into GPRs
+bool CachedRecovery::loadsIntoGPR() const
+{
+    switch (recovery().technique()) {
+    case Int32DisplacedInJSStack:
+#if USE(JSVALUE64)
+    case Int52DisplacedInJSStack:
+    case StrictInt52DisplacedInJSStack:
+    case DisplacedInJSStack:
+#endif
+    case BooleanDisplacedInJSStack:
+    case CellDisplacedInJSStack:
+        return true;
+
+    default:
+        return false;
+    }
+}
+
+} // namespace JSC
+
+#endif // ENABLE(JIT)