Fix for devirtualization dump functions
* gimple.h (gimple_location_safe): New function introduced.
* cgraphunit.c (walk_polymorphic_call_targets): Usage
of gimple_location_safe replaces gimple_location.
(gimple_fold_call): Likewise.
* ipa-devirt.c (ipa_devirt): Likewise.
* ipa-prop.c (ipa_make_edge_direct_to_target): Likewise.
* ipa.c (walk_polymorphic_call_targets): Likewise.
* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@212067 138bc75d-0d04-0410-961f-82ee72b054a4