[Bug tree-optimization/60023] New: [4.9 Regression] ICE: verify_gimple failed: dead STMT in EH table with -O3 -fnon-call-exceptions -mavx2

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60023

            Bug ID: 60023
           Summary: [4.9 Regression] ICE: verify_gimple failed: dead STMT
                    in EH table with -O3 -fnon-call-exceptions -mavx2
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz

Created attachment 32008
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32008&action=edit
partially reduced testcase

Compiler output:
$ gcc -O3 -fnon-call-exceptions -mavx2 -std=c++0x testcase.C
testcase.C: In function 'void __copy_move_b(_Bit_iterator, _Bit_iterator)':
testcase.C:110:6: error: dead STMT in EH table
 void __copy_move_b (_Bit_iterator __last, _Bit_iterator __result)
      ^
# VUSE <.MEM_81>
_55 = *SR.55_29(D);
testcase.C:110:6: error: dead STMT in EH table
# .MEM_89 = VDEF <.MEM_79>
*SR.53_41(D) = _45;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_90 = VDEF <.MEM_80>
*SR.54_35(D) = _51;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_91 = VDEF <.MEM_81>
*SR.55_29(D) = _57;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_88 = VDEF <.MEM_78>
*SR.52_47(D) = _39;
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_82>
_61 = *SR.56_23(D);
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_22>
_25 = *SR.50_1(D);
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_83>
_67 = *SR.57_105(D);
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_77>
_31 = *SR.51_8(D);
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_84>
_73 = *SR.58_106(D);
testcase.C:110:6: error: dead STMT in EH table
# .MEM_92 = VDEF <.MEM_82>
*SR.56_23(D) = _63;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_86 = VDEF <.MEM_22>
*SR.50_1(D) = _27;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_93 = VDEF <.MEM_83>
*SR.57_105(D) = _69;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_87 = VDEF <.MEM_77>
*SR.51_8(D) = _33;
testcase.C:110:6: error: dead STMT in EH table
# .MEM_94 = VDEF <.MEM_84>
*SR.58_106(D) = _75;
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_78>
_37 = *SR.52_47(D);
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_79>
_43 = *SR.53_41(D);
testcase.C:110:6: error: dead STMT in EH table
# VUSE <.MEM_80>
_49 = *SR.54_35(D);
testcase.C:110:6: internal compiler error: verify_gimple failed
0xd16113 verify_gimple_in_cfg(function*)
        /mnt/svn/gcc-trunk/gcc/tree-cfg.c:4940
0xbf10b2 execute_function_todo
        /mnt/svn/gcc-trunk/gcc/passes.c:1853
0xbf1a03 execute_todo
        /mnt/svn/gcc-trunk/gcc/passes.c:1887
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.


This source contains uninitialised variables, but the original unreduced
testcase didn't.