gcc/testsuite/gfortran.dg/reassoc_1.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-O3 -ffast-math -fdump-tree-optimized" }
   3
   4 function test(b)
   5   real a
   6   a = (b + 5.) - 5.
   7   test = a
   8 end
   9
  10 ! We need an explicit +5 and -5, and an intermediate ((bla)) expression
  11 ! (the reassoc barrier).  Make use of "." matching lineends.
  12 ! { dg-final { scan-tree-dump "\\\+ 5.*\\\)\\\).* - 5" "optimized" } }