[Bug middle-end/49721] convert_memory_address_addr_space may generate invalid new insns

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49721

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-02 14:08:31 
UTC ---
Another testcase:

[hjl@gnu-33 gcc]$ cat /export/gnu/import/delta-fortran/testcase-min.f
      subroutine midbloc6(c,a2,a2i,q)
      parameter (ndim2=6)
      parameter (ndim=3)
      dimension cr(ndim2,ndim2),xj(ndim2,ndim2),q(*)
     @,sai(ndim2,ndim2),cm(ndim2,ndim2),w(ndim2,ndim2)
      dimension vr(ndim2,ndim2),vi(ndim2,ndim2),s1(ndim2,ndim2),p(ndim)
      dimension xq(6),qb(2),qc(2),ifl(6),iplane(3)
      save
      call eig66(cr,rr,ri,vr,vi)
      xq(i)=asin(ri(i))/x2pi
      i9=6
      qb(1)=q(1)/x2pi
        do 180 i=1,2
          do 170 j=1,6
  120       if(xq(j)) 130,190,140
  130       if(qb(i)-0.5d0) 160,150,150
  140       if(qb(i)-0.5d0) 150,150,160
  150       continue
            tst=abs(abs(qb(i))-abs(xq(j)))
  160       continue
  170     continue
          iplane(i)=k
  180   continue
  190   continue
      n1=iplane(3)
      if(i9.eq.6) then
        z=vr(1,n1)*vi(2,n1)-vr(2,n1)*vi(1,n1)+vr(3,n1)*vi(4,n1)-vr(4,n1)
      endif
      sai(6,i)=vi(i,n1)/z
      call dacond6(a2,zero)
      end
[hjl@gnu-33 gcc]$ ./xgcc -B./ -O3 -mx32 -O3 -funroll-loops -ffast-math -S
/export/gnu/import/delta-fortran/testcase-min.f
/export/gnu/import/delta-fortran/testcase-min.f: In function
\u2018midbloc6\u2019:
/export/gnu/import/delta-fortran/testcase-min.f:31:0: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-33 gcc]$