[Bug bootstrap/69781] New: [6 Regression] r233362 breaks PGO/LTO bootstrap on ppc64le

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69781

            Bug ID: 69781
           Summary: [6 Regression] r233362 breaks PGO/LTO bootstrap on
                    ppc64le
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: kugan at gcc dot gnu.org
  Target Milestone: ---
            Target: ppc64le

r233362 causes gcc to ICE all over the place during PGO/LTO bootstrap:

../../gcc/gcc/bb-reorder.c: In member function ‘execute’:
../../gcc/gcc/bb-reorder.c:2557:1: internal compiler error: in
tree_node_structure_for_code, at tree.c:481
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [/home/trippels/tmp/cceUBSgY.ltrans18.ltrans.o] Error 1
make[4]: *** Waiting for unfinished jobs....
../../gcc/gcc/tree-ssa-sccvn.c: In function ‘vn_reference_lookup’:
../../gcc/gcc/tree-ssa-sccvn.c:2264:4: warning: ‘valuezied_anything’ may be
used uninitialized in this function [-Wmaybe-uninitialized]
    || !ao_ref_init_from_vn_reference (&r, vr1.set, vr1.type,
    ^
../../gcc/gcc/tree-ssa-sccvn.c:2242:8: note: ‘valuezied_anything’ was declared
here
   bool valuezied_anything;
        ^
../../gcc/gcc/config/rs6000/predicates.md: In function ‘vsx_register_operand’:
../../gcc/gcc/config/rs6000/predicates.md:67:0: internal compiler error: in
mark_operand_necessary, at tree-ssa-dce.c:166
 ;; (either altivec or VSX).

Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [/home/trippels/tmp/cceUBSgY.ltrans5.ltrans.o] Error 1
../../gcc/gcc/config/rs6000/predicates.md: In function
‘cc_reg_not_cr0_operand’:
../../gcc/gcc/config/rs6000/predicates.md:431:0: internal compiler error: in
mark_operand_necessary, at tree-ssa-dce.c:160
 (define_predicate "cc_reg_not_micro_cr0_operand"

Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [/home/trippels/tmp/cceUBSgY.ltrans22.ltrans.o] Error 1
../../gcc/gcc/expmed.c: In function ‘expand_shift_1’:
../../gcc/gcc/expmed.c:2288:1: internal compiler error: in
insert_value_copy_on_edge, at tree-outof-ssa.c:296
 expand_shift_1 (enum tree_code code, machine_mode mode, rtx shifted,
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [/home/trippels/tmp/cceUBSgY.ltrans15.ltrans.o] Error 1