New approach to Crankshaft decision-making

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 5af771828999fc9b9a0370c6e2736e298f93c019..67a3683e980376d388f78c3ad787587f0557b8b2 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -5461,6 +5461,9 @@ class JSFunction: public JSObject {
   // a weak list by the GC.
   DECL_ACCESSORS(next_function_link, Object)
 
+  inline int profiler_ticks();

[fschneider, 2011/12/12 11:31:21]

Shouldn't be this on SharedFunctionInfo instead?

[fschneider, 2011/12/13 11:53:01]

This increases the size of each JSFunction by 1 word  from 36 to 40 (11%). This
could hurt memory-constrained devices on programs with lots of closures. I'd
prefer a solution without additional space cost.

[Jakob Kummerow, 2011/12/14 08:42:31]

Done.

+  inline void set_profiler_ticks(int ticks);
+
   // Prints the name of the function using PrintF.
   inline void PrintName() {
     PrintName(stdout);
@@ -5500,7 +5503,9 @@ class JSFunction: public JSObject {
       kPrototypeOrInitialMapOffset + kPointerSize;
   static const int kContextOffset = kSharedFunctionInfoOffset + kPointerSize;
   static const int kLiteralsOffset = kContextOffset + kPointerSize;
-  static const int kNonWeakFieldsEndOffset = kLiteralsOffset + kPointerSize;
+  static const int kProfilerTicksOffset = kLiteralsOffset + kPointerSize;
+  static const int kNonWeakFieldsEndOffset =
+      kProfilerTicksOffset + kPointerSize;
   static const int kNextFunctionLinkOffset = kNonWeakFieldsEndOffset;
   static const int kSize = kNextFunctionLinkOffset + kPointerSize;