Imported WebKit commit e89504fa9195b2063b2530961d4b73dd08de3242 (http://svn.webkit.org/repository/webkit/trunk@135485)

Change-Id: I03774e5ac79721c13ffa30d152537a74d0b12e66
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/Source/JavaScriptCore/dfg/DFGNodeFlags.h b/Source/JavaScriptCore/dfg/DFGNodeFlags.h
index a897d0c4f..5e41bfc6b 100644
--- a/Source/JavaScriptCore/dfg/DFGNodeFlags.h
+++ b/Source/JavaScriptCore/dfg/DFGNodeFlags.h
@@ -52,14 +52,15 @@ namespace JSC { namespace DFG {
 #define NodeMayOverflow           0x100
 #define NodeMayNegZero            0x200
                                 
-#define NodeBackPropMask         0x1C00
+#define NodeBackPropMask         0x3C00
 #define NodeUseBottom             0x000
 #define NodeUsedAsNumber          0x400 // The result of this computation may be used in a context that observes fractional results.
 #define NodeNeedsNegZero          0x800 // The result of this computation may be used in a context that observes -0.
-#define NodeUsedAsValue           (NodeUsedAsNumber | NodeNeedsNegZero)
-#define NodeUsedAsInt            0x1000 // The result of this computation is known to be used in a context that prefers, but does not require, integer values.
+#define NodeUsedAsOther          0x1000 // The result of this computation may be used in a context that distinguishes between NaN and other things (like undefined).
+#define NodeUsedAsValue          (NodeUsedAsNumber | NodeNeedsNegZero | NodeUsedAsOther)
+#define NodeUsedAsInt            0x2000 // The result of this computation is known to be used in a context that prefers, but does not require, integer values.
 
-#define NodeDoesNotExit          0x2000 // This flag is negated to make it natural for the default to be that a node does exit.
+#define NodeDoesNotExit          0x4000 // This flag is negated to make it natural for the default to be that a node does exit.
 
 typedef uint16_t NodeFlags;