tree 519fb271b86ee36b26d943a7011d0697ffdbaec1
parent 1cd1b1e987f5e2f060d7972b13d83239b36d77d6
author Douglas Gregor <dgregor@apple.com> 1226014162 +0000
committer Douglas Gregor <dgregor@apple.com> 1226014162 +0000

Initial, rudimentary implementation of operator overloading for binary
operators. For example, one can now write "x + y" where x or y is a
class or enumeration type, and Clang will perform overload resolution
for "+" based on the overloaded operators it finds.

The other kinds of overloadable operators in C++ will follow this same
approach. 

Three major issues remain:
  1) We don't find member operators
  2) Since we don't have user-defined conversion operators, we can't
  call any of the built-in overloaded operators in C++ [over.built].
  3) Once we've done the semantic checks, we drop the overloaded
  operator on the floor; it doesn't get into the AST at all.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58821 91177308-0d34-0410-b5e6-96231b3b80d8