gcc/testsuite/gfortran.dg/forall_15.f90

   1 ! { dg-do run }
   2 ! { dg-options "-ffrontend-optimize -fdump-tree-original" }
   3 ! PR 50564 - this used to ICE with front end optimization.
   4 ! Original test case by Andrew Benson.
   5 program test
   6   implicit none
   7   double precision, dimension(2) :: timeSteps, control
   8   integer                        :: iTime
   9   double precision               :: ratio
  10   double precision               :: a
  11
  12   ratio = 0.7d0
  13   control(1) = ratio**(dble(1)-0.5d0)-ratio**(dble(1)-1.5d0)
  14   control(2) = ratio**(dble(2)-0.5d0)-ratio**(dble(2)-1.5d0)
  15   forall(iTime=1:2)
  16      timeSteps(iTime)=ratio**(dble(iTime)-0.5d0)-ratio**(dble(iTime)-1.5d0)
  17   end forall
  18   if (any(abs(timesteps - control) > 1d-10)) STOP 1
  19
  20   ! Make sure we still do the front-end optimization after a forall
  21   a = cos(ratio)*cos(ratio) + sin(ratio)*sin(ratio)
  22   if (abs(a-1.d0) > 1d-10) STOP 2
  23 end program test
  24 ! { dg-final { scan-tree-dump-times "__builtin_cos" 1 "original" } }
  25 ! { dg-final { scan-tree-dump-times "__builtin_sin" 1 "original" } }