gcc/testsuite/gfortran.dg/pr42108.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-O2 -fdump-tree-fre1 -fdump-tree-pre-details -fno-tree-loop-im" }
   3
   4 subroutine  eval(foo1,foo2,foo3,foo4,x,n,nnd)
   5   implicit real*8 (a-h,o-z)
   6   dimension foo3(n),foo4(n),x(nnd)
   7   nw=0
   8   foo3(1)=foo2*foo4(1)
   9   do i=2,n
  10     foo3(i)=foo2*foo4(i)
  11     do  j=1,i-1
  12       temp=0.0d0
  13       jmini=j-i
  14       do  k=i,nnd,n
  15         temp=temp+(x(k)-x(k+jmini))**2
  16       end do
  17       temp = sqrt(temp+foo1)
  18       foo3(i)=foo3(i)+temp*foo4(j)
  19       foo3(j)=foo3(j)+temp*foo4(i)
  20     end do
  21   end do
  22 end subroutine eval
  23
  24 ! There should be only one load from n left
  25 ! { dg-final { scan-tree-dump-times "\\*n_" 1 "fre1" } }