Enable a pair of bytecodes that speed up method calls. See pypy.interpreter.callmethod for a description.
The goal is to avoid creating the bound method object in the common case. So far, this only works for calls with no keyword, no *arg and no **arg but it would be easy to extend.
Gives the best results combined with --objspace-std-withshadowtracking.
For more information, see the section in Standard Interpreter Optimizations.