[TypeFeedbackVector] Root feedback vectors at function literal site.

tools/gdbinit

 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Print HeapObjects.
 define job
 call _v8_internal_Print_Object((void*)($arg0))
 end
 document job
 Print a v8 JavaScript object
@@ skipping 20 matching lines @@
 
 # Print TypeFeedbackVector
 define jfv
 call _v8_internal_Print_TypeFeedbackVector((void*)($arg0))
 end
 document jfv
 Print a v8 TypeFeedbackVector object
 Usage: jtv tagged_ptr
 end
 
+# Print TypeFeedbackMetadata
+define jfm
+call _v8_internal_Print_TypeFeedbackMetadata((void*)($arg0))
+end
+document jfm
+Print a v8 TypeFeedbackMetadata object
+Usage: jtm tagged_ptr
+end
+
+
 # Print DescriptorArray.
 define jda
 call _v8_internal_Print_DescriptorArray((void*)($arg0))
 end
 document jda
 Print a v8 DescriptorArray object
 Usage: jda tagged_ptr
 end
 
 # Print LayoutDescriptor.
@@ skipping 57 matching lines @@
     print("%s -> %s %s (%s)\033[0m" % (color, prefix, match.group(2), match.group(1)))
 end
 end
 document bta
 Print stack trace with assertion scopes
 Usage: bta
 end
 
 set disassembly-flavor intel
 set disable-randomization off