[Bug bootstrap/69352] New: [6 Regression] profiledbootstrap failure 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=69352

            Bug ID: 69352
           Summary: [6 Regression] profiledbootstrap failure with
                    --with-build-config=bootstrap-lto
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: alalaw01 at gcc dot gnu.org
  Target Milestone: ---

On Linux/x86-64, r232508 gave

export/gnu/import/git/gcc-regression/gcc/gcc/caller-save.c: In function
\u2018insert_restore\u2019:
/export/gnu/import/git/gcc-regression/gcc/gcc/caller-save.c:1187:1: internal
compiler error: in equal_mem_array_ref_p, at tree-ssa-scopedtables.c:271
 insert_restore (struct insn_chain *chain, int before_p, int regno,
 ^

0x10f2b5e equal_mem_array_ref_p
       
/export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-scopedtables.c:271
0x10f2b5e hashable_expr_equal_p
       
/export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-scopedtables.c:309
0x10f2c82 expr_elt_hasher::equal(expr_hash_elt* const&, expr_hash_elt* const&)
       
/export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-scopedtables.c:747
0xff0f50 hash_table<expr_elt_hasher,
xcallocator>::find_slot_with_hash(expr_hash_elt* const&, unsigned int,
insert_option)
        /export/gnu/import/git/gcc-regression/gcc/gcc/hash-table.h:873
0xfea061 hash_table<expr_elt_hasher, xcallocator>::find_slot(expr_hash_elt*
const&, insert_option)
        /export/gnu/import/git/gcc-regression/gcc/gcc/hash-table.h:414
0xfea061 lookup_avail_expr
        /export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-dom.c:1988
0xfeabd9 eliminate_redundant_computations
        /export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-dom.c:1455
0xfee4ee optimize_stmt
        /export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-dom.c:1833
0xfee4ee dom_opt_dom_walker::before_dom_children(basic_block_def*)
        /export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-dom.c:1363
0x195aecb dom_walker::walk(basic_block_def*)
        /export/gnu/import/git/gcc-regression/gcc/gcc/domwalk.c:265
0xfef610 execute
        /export/gnu/import/git/gcc-regression/gcc/gcc/tree-ssa-dom.c:608
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [/tmp/cc0VbGJg.ltrans30.ltrans.o] Error 1
make[4]: *** Waiting for unfinished jobs....
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
/usr/local/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
/export/gnu/import/git/gcc-regression/gcc/gcc/cp/Make-lang.in:100: recipe for
target 'cc1plus' failed