gcc/testsuite/gcc.dg/tree-ssa/abs-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3 /* PR tree-optimization/109829 */
   4
   5 float abs_f(float x) { return __builtin_signbit(x) ? x : -x; }
   6 double abs_d(double x) { return __builtin_signbit(x) ? x : -x; }
   7 long double abs_ld(long double x) { return __builtin_signbit(x) ? x : -x; }
   8
   9
  10 /* __builtin_signbit(x) ? x : -x. Should be convert into - ABS_EXP<x> */
  11 /* { dg-final { scan-tree-dump-not "signbit" "optimized"} } */
  12 /* { dg-final { scan-tree-dump-times "= ABS_EXPR" 3 "optimized"} } */
  13 /* { dg-final { scan-tree-dump-times "= -" 3 "optimized"} } */