gcc/testsuite/gfortran.dg/assign_10.f90

   1 ! { dg-do run }
   2 ! { dg-options "-O3 -fdump-tree-original" }
   3 ! Tests the fix for PR33850, in which one of the two assignments
   4 ! below would produce an unnecessary temporary for the index
   5 ! expression, following the fix for PR33749.
   6 !
   7 ! Contributed by Dick Hendrickson on comp.lang.fortran,
   8 ! " Most elegant syntax for inverting a permutation?" 20071006
   9 !
  10   integer(4) :: p4(4) = (/2,4,1,3/)
  11   integer(4) :: q4(4) = (/2,4,1,3/)
  12   integer(8) :: p8(4) = (/2,4,1,3/)
  13   integer(8) :: q8(4) = (/2,4,1,3/)
  14   p4(q4) = (/(i, i = 1, 4)/)
  15   q4(q4) = (/(i, i = 1, 4)/)
  16   p8(q8) = (/(i, i = 1, 4)/)
  17   q8(q8) = (/(i, i = 1, 4)/)
  18   if (any(p4 .ne. q4)) call abort ()
  19   if (any(p8 .ne. q8)) call abort ()
  20 end
  21 ! Whichever is the default length for array indices will yield
  22 ! parm 9 times, because a temporary is not necessary.  The other
  23 ! cases will all yield a temporary, so that atmp appears 27 times.
  24 ! Note that it is the kind conversion that generates the temp.
  25 !
  26 ! { dg-final { scan-tree-dump-times "parm" 9 "original" } }
  27 ! { dg-final { scan-tree-dump-times "atmp" 27 "original" } }
  28 ! { dg-final { cleanup-tree-dump "original" } }