gcc/testsuite/gfortran.dg/power_5.f90

   1 ! { dg-do run }
   2 ! { dg-options "-ffrontend-optimize -fdump-tree-original" }
   3 ! PR 57071 - Check that 1**k is transformed into 1
   4 program main
   5   implicit none
   6   integer, parameter :: n = 3
   7   integer(kind=8), dimension(-n:n) :: a
   8   integer, dimension(-n:n) :: c, d
   9   integer :: m
  10   integer :: i, v
  11   integer (kind=2) :: i2
  12
  13   v = 1
  14   m = n
  15   ! Test in scalar expressions
  16   do i=-n,n
  17      if (v /= 1**i) call abort
  18   end do
  19
  20   ! Test in array constructors
  21   a(-m:m) = [ (1**i, i= -m, m) ]
  22   if (any(a .ne. v)) call abort
  23
  24   ! Test in array expressions
  25   c = [ ( i, i = -n , n ) ]
  26   d = 1**c
  27   if (any(d .ne. v)) call abort
  28
  29   ! Test in different kind expressions
  30   do i2=-n,n
  31      if (v /= 1**i2) call abort
  32   end do
  33
  34 end program main
  35 ! { dg-final { scan-tree-dump-times "_gfortran_pow_i4_i4" 0 "original" } }