compiler: add result parameter names for inlinable functions
An inlinable function body may need to refer to result parameters, so
each result parameter needs a name. We already give them all names in
start_function (via create_result_variables). Change the export data
so that for an inlinable function we use those names for the function
declaration's result parameters.
Reviewed-on: https://go-review.googlesource.com/c/150070
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@266532 138bc75d-0d04-0410-961f-82ee72b054a4