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* [Bug rtl-optimization/99085] New: [11 Regression] ICE: verify_flow_info failed (error: multiple hot/cold transitions found)
@ 2021-02-13  7:59 asolokha at gmx dot com
  2021-02-15  8:23 ` [Bug rtl-optimization/99085] " rguenth at gcc dot gnu.org
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: asolokha at gmx dot com @ 2021-02-13  7:59 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99085

            Bug ID: 99085
           Summary: [11 Regression] ICE: verify_flow_info failed (error:
                    multiple hot/cold transitions found)
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---
            Target: x86_64-unknown-linux-gnu

gcc-11.0.0-alpha20210207 snapshot (g:3d912941f29c27b2ac7c79b9e7cb2f1150e75758)
ICEs when compiling the following testcase, reduced from
gcc/testsuite/c-c++-common/torture/builtin-clear-padding-4.c, w/ -O2
-fgraphite-identity -fsel-sched-pipelining -fselective-scheduling2:

void
foo (int m, int n, int o, int i)
{
  long double a2[m];
  int c2[n][o];
  int j, k;

  while (i < m)
    a2[i++] = 13.132L;

  for (j = 0; j < n; j++)
    for (k = 0; k < o; k++)
      c2[j][k] = 1;

  __builtin_abort ();
}

% x86_64-unknown-linux-gnu-gcc-11.0.0 -O2 -fgraphite-identity
-fsel-sched-pipelining -fselective-scheduling2 -c euiuvzbp.c
euiuvzbp.c: In function 'foo':
euiuvzbp.c:16:1: error: multiple hot/cold transitions found (bb 15)
   16 | }
      | ^
euiuvzbp.c:16:1: error: multiple hot/cold transitions found (bb 11)
during RTL pass: stack
euiuvzbp.c:16:1: internal compiler error: verify_flow_info failed
0x965f92 verify_flow_info()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/cfghooks.c:269
0x97e2f9 checking_verify_flow_info
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/cfghooks.h:212
0x97e2f9 commit_edge_insertions()
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/cfgrtl.c:2115
0xd71ff0 convert_regs
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/reg-stack.c:3270
0xd71ff0 reg_to_stack
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/reg-stack.c:3374
0xd71ff0 rest_of_handle_stack_regs
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/reg-stack.c:3429
0xd71ff0 execute
       
/var/tmp/portage/sys-devel/gcc-11.0.0_alpha20210207/work/gcc-11-20210207/gcc/reg-stack.c:3461

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2021-03-20  8:08 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-13  7:59 [Bug rtl-optimization/99085] New: [11 Regression] ICE: verify_flow_info failed (error: multiple hot/cold transitions found) asolokha at gmx dot com
2021-02-15  8:23 ` [Bug rtl-optimization/99085] " rguenth at gcc dot gnu.org
2021-02-15  8:29 ` [Bug rtl-optimization/99085] [10/11 " jakub at gcc dot gnu.org
2021-02-15  8:30 ` jakub at gcc dot gnu.org
2021-02-15 16:11 ` jakub at gcc dot gnu.org
2021-03-03  8:52 ` cvs-commit at gcc dot gnu.org
2021-03-03  8:57 ` [Bug rtl-optimization/99085] [10 " jakub at gcc dot gnu.org
2021-03-19 23:30 ` cvs-commit at gcc dot gnu.org
2021-03-20  8:08 ` jakub at gcc dot gnu.org

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