gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-30.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -ffinite-math-only -fdump-tree-optimized" } */
   3
   4 float foo(float x, float y, float z)
   5 {
   6   float a = __builtin_fmaf (x, y, z);
   7   float b = __builtin_fmaf (x, y, z);
   8   return a - b;
   9 }
  10
  11 /* { dg-final { scan-tree-dump "return 0" "optimized" } } */