1 /* { dg-do compile } */ 2 /* { dg-require-effective-target large_double } */ 3 /* { dg-require-effective-target c99_runtime } */ 4 /* { dg-options "-O2 -ffast-math -fdump-tree-forwprop-details" } */ 5 6 #include <math.h> 7 f2(double x)8double f2(double x) 9 { 10 double t1 = fabs (x); 11 double t2 = x / t1; 12 return t2; 13 } 14 15 /* { dg-final { scan-tree-dump "__builtin_copysign" "forwprop1" } } */ 16