gcc/testsuite/gcc.dg/pr21032.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized -frounding-math" } */
   3
   4 void bar(float x);
   5 void foo(double x)
   6 {
   7   bar(-x);
   8 }
   9
  10 /* { dg-final { scan-tree-dump-not "-\\(float\\)" "optimized" } } */