[Bug middle-end/52621] [4.6/4.7/4.8 Regression] ICE with -O3 -march=opteron in initialize_matrix_A, at tree-data-ref.c:1964

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52621

--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-03-21 
14:22:49 UTC ---
Reduced test


      SUBROUTINE GHDSYM(IZ,IS,LMMAX,S,LMS,Y,L2M,DRL,NLAY2,K0,DCUT)!,
!
      COMPLEX Y(L2M,L2M),H(33),S(LMS)
      COMPLEX RU,CI,CZ,K0,FF,Z,Z1,Z2,Z3,ST
!
      DO 140 KK=1,4
            DO 130 L=1,L2M
               L1=L*L-L
               DO 120 M=1,L
                  IPM=L1+M
                  IMM=L1-M+2
                  S(IPM)=S(IPM)+Z3*Y(L,M)
                  IF (M.NE.1) S(IMM)=S(IMM)+Z3*Y(M-1,L)*CSGN
120            CONTINUE
130         CONTINUE
140   CONTINUE
      END