1 // PR rtl-optimization/69570
2 // { dg-do run }
3 // { dg-options "-O2" }
4 // { dg-additional-options "-fpic" { target fpic } }
5 // { dg-additional-options "-march=i686" { target ia32 } }
6
7 template <typename T> inline const T &
min(const T & a,const T & b)8 min (const T &a, const T &b)
9 {
10 if (b < a)
11 return b;
12 return a;
13 }
14
15 template <typename T> inline const T &
max(const T & a,const T & b)16 max (const T &a, const T &b)
17 {
18 if (a < b)
19 return b;
20 return a;
21 }
22
23 static inline void
foo(unsigned x,unsigned y,unsigned z,double & h,double & s,double & l)24 foo (unsigned x, unsigned y, unsigned z, double &h, double &s, double &l)
25 {
26 double r = x / 255.0;
27 double g = y / 255.0;
28 double b = z / 255.0;
29 double m = max (r, max (g, b));
30 double n = min (r, min (g, b));
31 double d = m - n;
32 double e = m + n;
33 h = 0.0, s = 0.0, l = e / 2.0;
34 if (d > 0.0)
35 {
36 s = l > 0.5 ? d / (2.0 - e) : d / e;
37 if (m == r && m != g)
38 h = (g - b) / d + (g < b ? 6.0 : 0.0);
39 if (m == g && m != b)
40 h = (b - r) / d + 2.0;
41 if (m == b && m != r)
42 h = (r - g) / d + 4.0;
43 h /= 6.0;
44 }
45 }
46
47 __attribute__ ((noinline, noclone))
bar(unsigned x[3],double y[3])48 void bar (unsigned x[3], double y[3])
49 {
50 double h, s, l;
51 foo (x[0], x[1], x[2], h, s, l);
52 y[0] = h;
53 y[1] = s;
54 y[2] = l;
55 }
56
57 int
main()58 main ()
59 {
60 unsigned x[3] = { 0, 128, 0 };
61 double y[3];
62
63 bar (x, y);
64 if (__builtin_fabs (y[0] - 0.33333) > 0.001
65 || __builtin_fabs (y[1] - 1) > 0.001
66 || __builtin_fabs (y[2] - 0.25098) > 0.001)
67 __builtin_abort ();
68
69 return 0;
70 }
71