gcc/testsuite/gfortran.dg/trim_optimize_1.f90

   1 ! { dg-do run }
   2 ! { dg-options "-O -fdump-tree-original" }
   3 ! PR 40628 - optimize unnecessary TRIMs on assignment
   4 program main
   5   character(len=3) :: a
   6   character(len=4) :: b,c
   7   b = 'abcd'
   8   a = trim(b)
   9   c = trim(trim(a))
  10   if (a /= 'abc') STOP 1
  11   if (c /= 'abc') STOP 2
  12 end program main
  13
  14 ! { dg-final { scan-tree-dump-times "memmove" 3 "original" } }
  15 ! { dg-final { scan-tree-dump-times "string_trim" 0 "original" } }