[Bug bootstrap/64754] [5 Regression] bootstrap failed with --with-build-config=bootstrap-lto

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64754

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu.org
   Target Milestone|---                         |5.0

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Valgrind reports:

==18318== Conditional jump or move depends on uninitialised value(s)
==18318==    at 0x8C67E4A: maybe_set_dependence_info(tree_node*, tree_node*,
unsigned short&, variable_info*, unsigned short&) (tree-ssa-structalias.c:7046)
==18318==    by 0x8C68270: compute_dependence_clique()
(tree-ssa-structalias.c:7127)
==18318==    by 0x8C683ED: compute_may_aliases() (tree-ssa-structalias.c:7184)
==18318==    by 0x899E7EC: execute_function_todo(function*, void*)
(passes.c:1927)
==18318==    by 0x899DB1D: do_per_function(void (*)(function*, void*), void*)
(passes.c:1647)
==18318==    by 0x899EA99: execute_todo(unsigned int) (passes.c:2012)
==18318==    by 0x899F3BC: execute_one_pass(opt_pass*) (passes.c:2339)
==18318==    by 0x899F548: execute_pass_list_1(opt_pass*) (passes.c:2378)
==18318==    by 0x899F578: execute_pass_list_1(opt_pass*) (passes.c:2379)
==18318==    by 0x899F5AB: execute_pass_list(function*, opt_pass*)
(passes.c:2389)
==18318==    by 0x899DE68: do_per_function_toporder(void (*)(function*, void*),
void*) (passes.c:1724)
==18318==    by 0x89A0112: execute_ipa_pass_list(opt_pass*) (passes.c:2730)
==18318== 

In codes added by r218005:

          if (clique == 0)
            clique = ++cfun->last_clique;
          if (restrict_var->ruid == 0)
                            ^^^^ It isn't initialized.
            restrict_var->ruid = ++last_ruid;
          MR_DEPENDENCE_CLIQUE (ref) = clique;
          MR_DEPENDENCE_BASE (ref) = restrict_var->ruid;
          return true;