gcc/testsuite/gfortran.dg/reassoc_4.f

   1 ! { dg-do compile }
   2 ! { dg-options "-O3 -ffast-math -fdump-tree-reassoc1 --param max-completely-peeled-insns=400" }
   3 ! { dg-additional-options "--param max-completely-peel-times=16" { target spu-*-* } }
   4       subroutine anisonl(w,vo,anisox,s,ii1,jj1,weight)
   5       integer ii1,jj1,i1,iii1,j1,jjj1,k1,l1,m1,n1
   6       real*8 w(3,3),vo(3,3),anisox(3,3,3,3),s(60,60),weight
   7 !
   8 !     This routine replaces the following lines in e_c3d.f for
   9 !     an anisotropic material
  10 !
  11                       do i1=1,3
  12                         iii1=ii1+i1-1
  13                         do j1=1,3
  14                           jjj1=jj1+j1-1
  15                           do k1=1,3
  16                             do l1=1,3
  17                               s(iii1,jjj1)=s(iii1,jjj1)
  18      &                          +anisox(i1,k1,j1,l1)*w(k1,l1)*weight
  19                               do m1=1,3
  20                                 s(iii1,jjj1)=s(iii1,jjj1)
  21      &                              +anisox(i1,k1,m1,l1)*w(k1,l1)
  22      &                                 *vo(j1,m1)*weight
  23      &                              +anisox(m1,k1,j1,l1)*w(k1,l1)
  24      &                                 *vo(i1,m1)*weight
  25                                 do n1=1,3
  26                                   s(iii1,jjj1)=s(iii1,jjj1)
  27      &                              +anisox(m1,k1,n1,l1)
  28      &                              *w(k1,l1)*vo(i1,m1)*vo(j1,n1)*weight
  29                                 enddo
  30                               enddo
  31                             enddo
  32                           enddo
  33                         enddo
  34                       enddo
  35
  36       return
  37       end
  38
  39 ! There should be 22 multiplications left after un-distributing
  40 ! weigth, w(k1,l1), vo(i1,m1) and vo(j1,m1) on the innermost two
  41 ! unrolled loops.
  42
  43 ! { dg-final { scan-tree-dump-times "\[0-9\] \\\* " 22 "reassoc1" } }