Support inlining at call-sites with mismatched number of arguments.

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 5082e4d3ff038b938868559af6ecb1724811e0d3..779dbddd57b8c870f19c34f7e8dedddadcb38f1c 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -1312,9 +1312,11 @@ class HStackCheck: public HTemplateInstruction<1> {
 class HEnterInlined: public HTemplateInstruction<0> {
  public:
   HEnterInlined(Handle<JSFunction> closure,
+                int arguments,

[Kevin Millikin (Chromium), 2012/01/19 10:26:34]

Make it sound like a number: "argument_count_" or something.

                 FunctionLiteral* function,
                 CallKind call_kind)
       : closure_(closure),
+        arguments_(arguments),
         function_(function),
         call_kind_(call_kind) {
   }
@@ -1322,6 +1324,7 @@ class HEnterInlined: public HTemplateInstruction<0> {
   virtual void PrintDataTo(StringStream* stream);
 
   Handle<JSFunction> closure() const { return closure_; }
+  int arguments() const { return arguments_; }
   FunctionLiteral* function() const { return function_; }
   CallKind call_kind() const { return call_kind_; }
 
@@ -1333,6 +1336,7 @@ class HEnterInlined: public HTemplateInstruction<0> {
 
  private:
   Handle<JSFunction> closure_;
+  int arguments_;
   FunctionLiteral* function_;
   CallKind call_kind_;
 };