[Bug middle-end/57393] [4.9 Regression] error: definition in block 4 follows the use / internal compiler error: verify_ssa failed

[Joost.VandeVondele at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57393

--- Comment #6 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
Simplified testcase that fails with 'gfortran -c -g -O2 -ffast-math bug.f90'

> cat bug.f90
  SUBROUTINE xb88_lr_adiabatic_lda_calc(npoints,e,g,sx)
    IMPLICIT REAL*8 (t)
    INTEGER, PARAMETER :: dp=8
    REAL(kind=dp) :: e(npoints)
    DO ii=1,npoints
       t804 = 0.1955555555e2_dp * t7 * t766 + &
              0.6000000000e1_dp * t405 * t2873 * t237
       t3026 = 0.1620000000e3_dp * t1143 * t474 * t2169 + &
               0.1080000000e3_dp * t1143 * t3030 * t237 - &
               0.6000000000e1_dp * t478 * t27 * t379 * t14 - &
               0.2400000000e2_dp * t478 * t123 * t2843 - &
               0.1200000000e2_dp * t473 * t1157 * t2368
       t3070 = t3026 + t3069
       t3093 = (3 * t496 * t865 * t65) + &
               (t187 * t2285 * t65) + (t3070 * t65) - &
               0.3333333336e0_dp * t1137 * t1134
       t3268 = 0.1555555556e1_dp * t2937 * t446 * t2843 + &
                  (t3093 + t3141 + t3181 + t3232) *  &
               0.3125000000e0_dp * t3262 * t45 * t166 * t3264
       t3288 = -0.1000000001e1_dp * t165 * t2636 * t237 - &
                (t2724 + t2783 + t2935 + t3268) - &
                0.8333333340e-1_dp * t906 * t384 * t2160
       t3291 = -0.1000000001e1_dp * t2147 * t84 * t754 - &
                t8 * (t2635 + t3288)
       IF( g>= 3 .OR. g== -3 ) THEN
         e(ii) = e(ii) +  t3291 * sx
       END IF
    END DO
  END SUBROUTINE xb88_lr_adiabatic_lda_calc