PR debug/47079
PR debug/46724
* function.c (instantiate_expr): Instantiate incoming rtl of
implicit arguments, and recurse on VALUE_EXPRs.
(instantiate_decls): Instantiate rtl and VALUE_EXPR of result.
* var-tracking.c (adjust_mems): Reject virtual_incoming_args_rtx.

From-SVN: r169034