7170053: crash in C2 when using -XX:+CountCompiledCalls
Reviewed-by: kvn, twisti
Contributed-by: Krystal Mok <sajia@taobao.com>

C2 may crash when compiling methods with -XX:+CountCompiledCalls
turned on. The cause is in Parse::count_compiled_calls(), where it
made a TypeInstPtr from a ciMethod:

const TypeInstPtr* addr_type = TypeInstPtr::make(method());

Since the klass of a ciMethod is a ciMethodKlass, which isn't a
ciInstanceKlass, an assertion is hit later in
Compile::flatten_alias_type(), where it's expecting a TypeInstPtr to
have a ciInstanceKlass:

ciInstanceKlass *k = to->klass()->as_instance_klass();

The fix is to use TypeOopPtr::make_from_constant(method()) instead of
TypeInstPtr::make(method()).