[Bug rtl-optimization/90026] New: [8/9 Regression] ICE: verify_flow_info failed (error: missing barrier after block 2)

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90026

            Bug ID: 90026
           Summary: [8/9 Regression] ICE: verify_flow_info failed (error:
                    missing barrier after block 2)
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: ice-checking
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

g++-9.0.0-alpha20190407 snapshot (r270192) ICEs when compiling
gcc/testsuite/g++.dg/torture/pr33340.C w/ -O2 (-O3, -Ofast)
-fnon-call-exceptions -ftracer:

% g++-9.0.0-alpha20190407 -O2 -fnon-call-exceptions -ftracer -w -c
gcc/testsuite/g++.dg/torture/pr33340.C
gcc/testsuite/g++.dg/torture/pr33340.C: In function 'void f()':
gcc/testsuite/g++.dg/torture/pr33340.C:29:1: error: missing barrier after block
2
   29 | }
      | ^
during RTL pass: outof_cfglayout
gcc/testsuite/g++.dg/torture/pr33340.C:29:1: internal compiler error:
verify_flow_info failed
0xb37297 verify_flow_info()
       
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190407/work/gcc-9-20190407/gcc/cfghooks.c:265
0xb509d5 execute
       
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190407/work/gcc-9-20190407/gcc/cfgrtl.c:3622