[Bug fortran/80395] New: verify_gimple fails with Error: invalid reference prefix with -O3 -finline-functions

["zeccav at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80395

            Bug ID: 80395
           Summary: verify_gimple fails with Error: invalid reference
                    prefix with -O3 -finline-functions
           Product: gcc
           Version: 7.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zeccav at gmail dot com
  Target Milestone: ---

Created attachment 41175
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41175&action=edit
To be compiled with -O3 and optionally -finline-functions

gfortran -S -O3 ~/f95/gfbug128.f -finline-functions 
/home/vitti/f95/gfbug128.f:32:0:

       SUBROUTINE CCHK6( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,

Error: invalid reference prefix
MEM[base: yt_418(D), index: ivtmp.437_1019, step: 2, offset: 0B]
/home/vitti/f95/gfbug128.f:420:0:

          YT( IY ) = ZERO

note: in statement
# .MEM_748 = VDEF <.MEM_722>
IMAGPART_EXPR <MEM[base: yt_418(D), index: ivtmp.437_1019, step: 2, offset:
0B]> = 0.0;
/home/vitti/f95/gfbug128.f:32:0:

       SUBROUTINE CCHK6( SNAME, EPS, THRESH, NOUT, NTRA, TRACE, REWI,

internal compiler error: verify_gimple failed
0xbf501e verify_gimple_in_cfg(function*, bool)
        ../../gcc-trunk-246751/gcc/tree-cfg.c:5266
0xad86c6 execute_function_todo
        ../../gcc-trunk-246751/gcc/passes.c:1966
0xad9712 execute_todo
        ../../gcc-trunk-246751/gcc/passes.c:2016
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