[Bug tree-optimization/78061] [7 Regression] -O3 causes "Error: definition in block 117 does not dominate use in block 164"

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78061

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
This Fortran code seems to be the results of creduce and
it generates the same compiler error.

      SUBROUTINE SSYMM(C)
      REAL C(LDC,*)
      LOGICAL LSAME
      LOGICAL UPPER
      IF (LSAME) THEN
          DO 170 J = 1,N
              DO 140 K = 1,J  
                  IF (UPPER) THEN
                      END IF
  140         CONTINUE
              DO 160 K = J + 1,N
                  C(I,J) = B(K)
  160         CONTINUE
  170     CONTINUE
      END IF
      END