1 files changed, 16 insertions, 8 deletions

diff --git a/Source/JavaScriptCore/bytecode/ExitKind.h b/Source/JavaScriptCore/bytecode/ExitKind.h
index af918ace3..22a54a1a9 100644
--- a/Source/JavaScriptCore/bytecode/ExitKind.h
+++ b/Source/JavaScriptCore/bytecode/ExitKind.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 2013 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
@@ -28,30 +28,38 @@
 
 namespace JSC {
 
-enum ExitKind {
+enum ExitKind : uint8_t {
     ExitKindUnset,
     BadType, // We exited because a type prediction was wrong.
-    BadFunction, // We exited because we made an incorrect assumption about what function we would see.
+    BadCell, // We exited because we made an incorrect assumption about what cell we would see. Usually used for function checks.
+    BadIdent, // We exited because we made an incorrect assumption about what identifier we would see. Usually used for cached Id check in get_by_val.
     BadExecutable, // We exited because we made an incorrect assumption about what executable we would see.
     BadCache, // We exited because an inline cache was wrong.
-    BadWeakConstantCache, // We exited because a cache on a weak constant (usually a prototype) was wrong.
+    BadConstantCache, // We exited because a cache on a weak constant (usually a prototype) was wrong.
     BadIndexingType, // We exited because an indexing type was wrong.
+    BadTypeInfoFlags, // We exited because we made an incorrect assumption about what TypeInfo flags we would see.
     Overflow, // We exited because of overflow.
     NegativeZero, // We exited because we encountered negative zero.
+    Int52Overflow, // We exited because of an Int52 overflow.
     StoreToHole, // We had a store to a hole.
     LoadFromHole, // We had a load from a hole.
     OutOfBounds, // We had an out-of-bounds access to an array.
-    StoreToHoleOrOutOfBounds, // We're simultaneously speculating that we're in bounds and not accessing a hole, and one of those things didn't pan out.
     InadequateCoverage, // We exited because we ended up in code that didn't have profiling coverage.
     ArgumentsEscaped, // We exited because arguments escaped but we didn't expect them to.
+    ExoticObjectMode, // We exited because some exotic object that we were accessing was in an exotic mode (like Arguments with slow arguments).
     NotStringObject, // We exited because we shouldn't have attempted to optimize string object access.
+    VarargsOverflow, // We exited because a varargs call passed more arguments than we expected.
+    TDZFailure, // We exited because we were in the TDZ and accessed the variable.
     Uncountable, // We exited for none of the above reasons, and we should not count it. Most uses of this should be viewed as a FIXME.
-    UncountableWatchpoint, // We exited because of a watchpoint, which isn't counted because watchpoints do tracking themselves.
-    WatchdogTimerFired // We exited because we need to service the watchdog timer.
+    UncountableInvalidation, // We exited because the code block was invalidated; this means that we've already counted the reasons why the code block was invalidated.
+    WatchdogTimerFired, // We exited because we need to service the watchdog timer.
+    DebuggerEvent, // We exited because we need to service the debugger.
+    ExceptionCheck, // We exited because a direct exception check showed that we threw an exception from a C call.
+    GenericUnwind, // We exited because a we arrived at this OSR exit from genericUnwind.
 };
 
 const char* exitKindToString(ExitKind);
-bool exitKindIsCountable(ExitKind);
+bool exitKindMayJettison(ExitKind);
 
 } // namespace JSC