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* [Bug tree-optimization/106781] New: [13 Regression] ICE: verify_flow_info failed (error: returns_twice call is not first in basic block 2)
@ 2022-08-31  7:11 asolokha at gmx dot com
  2022-08-31  7:48 ` [Bug tree-optimization/106781] " amonakov at gcc dot gnu.org
                   ` (8 more replies)
  0 siblings, 9 replies; 10+ messages in thread
From: asolokha at gmx dot com @ 2022-08-31  7:11 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106781

            Bug ID: 106781
           Summary: [13 Regression] ICE: verify_flow_info failed (error:
                    returns_twice call is not first in basic block 2)
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

gcc 13.0.0 20220828 snapshot (g:1ae1325f24cea1698b56e4299d95446a1f7b90a2) ICEs
when compiling the following testcase w/ -O2:

int n;

__attribute__ ((noinline, returns_twice)) static int
bar (int)
{
  n /= 0;

  return n;
}

int
foo (int x)
{
  return bar (x);
}

% gcc-13.0.0 -O2 -w -c dmkrwty8.c
dmkrwty8.c: In function 'foo':
dmkrwty8.c:12:1: error: returns_twice call is not first in basic block 2
   12 | foo (int x)
      | ^~~
bar.constprop ();
during IPA pass: inline
dmkrwty8.c:12:1: internal compiler error: verify_flow_info failed
0x9fcb0d verify_flow_info()
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cfghooks.cc:284
0xf44614 checking_verify_flow_info
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cfghooks.h:214
0xf44614 cleanup_tree_cfg_noloop
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/tree-cfgcleanup.cc:1156
0xf44614 cleanup_tree_cfg(unsigned int)
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/tree-cfgcleanup.cc:1207
0xdfdaf4 execute_function_todo
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/passes.cc:2057
0xdfdf4c execute_todo
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/passes.cc:2145
0xe00970 execute_one_ipa_transform_pass
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/passes.cc:2339
0xe00970 execute_all_ipa_transforms(bool)
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/passes.cc:2399
0xa34d2d cgraph_node::expand()
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cgraphunit.cc:1827
0xa34d2d cgraph_node::expand()
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cgraphunit.cc:1787
0xa36304 expand_all_functions
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cgraphunit.cc:1998
0xa36304 symbol_table::compile()
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cgraphunit.cc:2348
0xa38e27 symbol_table::compile()
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cgraphunit.cc:2261
0xa38e27 symbol_table::finalize_compilation_unit()
       
/var/tmp/portage/sys-devel/gcc-13.0.0_p20220828/work/gcc-13-20220828/gcc/cgraphunit.cc:2529

^ permalink raw reply	[flat|nested] 10+ messages in thread
end of thread, other threads:[~2022-10-19  8:56 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-08-31  7:11 [Bug tree-optimization/106781] New: [13 Regression] ICE: verify_flow_info failed (error: returns_twice call is not first in basic block 2) asolokha at gmx dot com
2022-08-31  7:48 ` [Bug tree-optimization/106781] " amonakov at gcc dot gnu.org
2022-08-31  8:23 ` [Bug tree-optimization/106781] [13 Regression] ICE: verify_flow_info failed (error: returns_twice call is not first in basic block 2) since r13-1754-g7a158a5776f5ca95 marxin at gcc dot gnu.org
2022-08-31  8:24 ` marxin at gcc dot gnu.org
2022-08-31  8:59 ` amonakov at gcc dot gnu.org
2022-08-31 12:17 ` rguenth at gcc dot gnu.org
2022-08-31 13:37 ` amonakov at gcc dot gnu.org
2022-10-19  7:01 ` rguenth at gcc dot gnu.org
2022-10-19  8:56 ` cvs-commit at gcc dot gnu.org
2022-10-19  8:56 ` rguenth at gcc dot gnu.org

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