[Bug tree-optimization/107369] New: [13 Regression] ICE: verify_flow_info failed (error: label 'l1' has incorrect context in bb 2)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107369

            Bug ID: 107369
           Summary: [13 Regression] ICE: verify_flow_info failed (error:
                    label 'l1' has incorrect context in bb 2)
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-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 20221023 snapshot (g:0e37fd4dc74c1db99cdc7d71ef378e1221253c6f) ICEs
when compiling the following testcase, reduced from
gcc/testsuite/gcc.dg/attr-assume-3.c, w/ -O1:

void
foo (int x)
{
  if (x == 1)
    goto l1;

  [[gnu::assume (({ l1:; 1; }))]];
}

% aarch64-linux-gnu-gcc-13 -O1 -c bgoph4pp.c
bgoph4pp.c: In function 'foo':
bgoph4pp.c:5:5: error: jump into statement expression
    5 |     goto l1;
      |     ^~~~
bgoph4pp.c:7:21: note: label 'l1' defined here
    7 |   [[gnu::assume (({ l1:; 1; }))]];
      |                     ^~
bgoph4pp.c:2:1: error: label 'l1' has incorrect context in bb 2
    2 | foo (int x)
      | ^~~
during GIMPLE pass: cfg
bgoph4pp.c:2:1: internal compiler error: verify_flow_info failed
0xa39a8e verify_flow_info()
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/cfghooks.cc:284
0xf87e34 checking_verify_flow_info
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/cfghooks.h:214
0xf87e34 cleanup_tree_cfg_noloop
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tree-cfgcleanup.cc:1161
0xf87e34 cleanup_tree_cfg(unsigned int)
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tree-cfgcleanup.cc:1212
0xf7d534 execute_build_cfg
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tree-cfg.cc:378
0xf7d534 execute
       
/var/tmp/portage/cross-aarch64-linux-gnu/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tree-cfg.cc:412