JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / dfg / DFGNodeFlags.h

diff --git a/dfg/DFGNodeFlags.h b/dfg/DFGNodeFlags.h
index 8243b751fedfe58bb67a830460fd48c284a3b16f..4db2a43e73412d28b069094e79a5847f67bb84be 100644 (file)
--- a/dfg/DFGNodeFlags.h
+++ b/dfg/DFGNodeFlags.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 2013, 2014 Apple Inc. All rights reserved.
+ * Copyright (C) 2012-2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -46,8 +46,7 @@ namespace JSC { namespace DFG {
                                 
 #define NodeMustGenerate                 0x0008 // set on nodes that have side effects, and may not trivially be removed by DCE.
 #define NodeHasVarArgs                   0x0010
-#define NodeClobbersWorld                0x0020
-#define NodeMightClobber                 0x0040
+// 0x0020 and 0x0040 are free.
                                 
 #define NodeBehaviorMask                 0x0780
 #define NodeMayOverflowInBaseline        0x0080
@@ -66,11 +65,11 @@ namespace JSC { namespace DFG {
 
 #define NodeArithFlagsMask               (NodeBehaviorMask | NodeBytecodeBackPropMask)
 
-#define NodeDoesNotExit                 0x10000 // This flag is negated to make it natural for the default to be that a node does exit.
+#define NodeIsFlushed                   0x10000 // Computed by CPSRethreadingPhase, will tell you which local nodes are backwards-reachable from a Flush.
 
-#define NodeRelevantToOSR               0x20000
-
-#define NodeIsFlushed                   0x40000 // Used by Graph::computeIsFlushed(), will tell you which local nodes are backwards-reachable from a Flush.
+#define NodeMiscFlag1                   0x20000
+#define NodeMiscFlag2                   0x40000
+#define NodeMiscFlag3                   0x80000
 
 typedef uint32_t NodeFlags;
 
@@ -97,7 +96,7 @@ enum RareCaseProfilingSource {
 
 static inline bool nodeMayOverflow(NodeFlags flags, RareCaseProfilingSource source)
 {
-    NodeFlags mask;
+    NodeFlags mask = 0;
     switch (source) {
     case BaselineRareCase:
         mask = NodeMayOverflowInBaseline;
@@ -114,7 +113,7 @@ static inline bool nodeMayOverflow(NodeFlags flags, RareCaseProfilingSource sour
 
 static inline bool nodeMayNegZero(NodeFlags flags, RareCaseProfilingSource source)
 {
-    NodeFlags mask;
+    NodeFlags mask = 0;
     switch (source) {
     case BaselineRareCase:
         mask = NodeMayNegZeroInBaseline;