Honor using declarations in overload resolution.  Most of the code for
overloaded-operator resolution is wildly untested, but the parallel code for
methods seems to satisfy some trivial tests.

Also change some overload-resolution APIs to take a type instead of an expression,
which lets us avoid creating a spurious CXXThisExpr when resolving implicit
member accesses.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90410 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed