jit: document gcc_jit_context_new_call_through_ptr

gcc/jit/ChangeLog:
	* docs/topics/expressions.rst (Function calls): Document
	gcc_jit_context_new_call_through_ptr.
	* docs/_build/texinfo/libgccjit.texi: Regenerate.

From-SVN: r236341

gcc/jit/ChangeLog

+2016-05-17  David Malcolm  <dmalcolm@redhat.com>
+
+	* docs/topics/expressions.rst (Function calls): Document
+	gcc_jit_context_new_call_through_ptr.
+	* docs/_build/texinfo/libgccjit.texi: Regenerate.
+
 2016-05-13  David Malcolm  <dmalcolm@redhat.com>
 
 	* jit-playback.h: Within namespace gcc:jit::playback...

gcc/jit/docs/topics/expressions.rst

@@ -409,6 +409,22 @@ Function calls
              printf_func,
              2, args));
 
+.. function:: gcc_jit_rvalue *\
+              gcc_jit_context_new_call_through_ptr (gcc_jit_context *ctxt,\
+                                                    gcc_jit_location *loc,\
+                                                    gcc_jit_rvalue *fn_ptr,\
+                                                    int numargs, \
+                                                    gcc_jit_rvalue **args)
+
+   Given an rvalue of function pointer type, and the given table of
+   argument rvalues, construct a call to the function pointer, with the
+   result as an rvalue.
+
+   .. note::
+
+      The same caveat as for :c:func:`gcc_jit_context_new_call` applies.
+
+
 Type-coercion
 *************