[Bug go/60870] go interface methods broken on ppc64le (bug296.go)

["ian at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60870

--- Comment #6 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Thu Apr 17 19:27:22 2014
New Revision: 209494

URL: http://gcc.gnu.org/viewcvs?rev=209494&root=gcc&view=rev
Log:
    PR go/60870

compiler: Don't convert function type for an interface method.

For an interface method the function type is the type without
the receiver, which is wrong since we are passing a receiver.
The interface method will always have the correct type in this
case, so no type conversion is necessary.

Also don't do the type conversion when calling a named
function, since in that case the type is also always correct.

The type can be wrong, and the conversion required, when the
function type refers to itself recursively.

Modified:
    trunk/gcc/go/gofrontend/expressions.cc