1 /* Test that the compiler properly optimizes floating point multiply
2 and add instructions into vfmaddss, vfmsubss, vfnmaddss,
3 vfnmsubss on FMA4 systems. */
4
5 /* { dg-do compile { target { ! { ia32 } } } } */
6 /* { dg-options "-O2 -mfma4 -mno-fma" } */
7
8 extern void exit (int);
9
10 float
flt_mul_add(float a,float b,float c)11 flt_mul_add (float a, float b, float c)
12 {
13 return (a * b) + c;
14 }
15
16 double
dbl_mul_add(double a,double b,double c)17 dbl_mul_add (double a, double b, double c)
18 {
19 return (a * b) + c;
20 }
21
22 float
flt_mul_sub(float a,float b,float c)23 flt_mul_sub (float a, float b, float c)
24 {
25 return (a * b) - c;
26 }
27
28 double
dbl_mul_sub(double a,double b,double c)29 dbl_mul_sub (double a, double b, double c)
30 {
31 return (a * b) - c;
32 }
33
34 float
flt_neg_mul_add(float a,float b,float c)35 flt_neg_mul_add (float a, float b, float c)
36 {
37 return (-(a * b)) + c;
38 }
39
40 double
dbl_neg_mul_add(double a,double b,double c)41 dbl_neg_mul_add (double a, double b, double c)
42 {
43 return (-(a * b)) + c;
44 }
45
46 float
flt_neg_mul_sub(float a,float b,float c)47 flt_neg_mul_sub (float a, float b, float c)
48 {
49 return (-(a * b)) - c;
50 }
51
52 double
dbl_neg_mul_sub(double a,double b,double c)53 dbl_neg_mul_sub (double a, double b, double c)
54 {
55 return (-(a * b)) - c;
56 }
57
58 float f[10] = { 2, 3, 4 };
59 double d[10] = { 2, 3, 4 };
60
main()61 int main ()
62 {
63 f[3] = flt_mul_add (f[0], f[1], f[2]);
64 f[4] = flt_mul_sub (f[0], f[1], f[2]);
65 f[5] = flt_neg_mul_add (f[0], f[1], f[2]);
66 f[6] = flt_neg_mul_sub (f[0], f[1], f[2]);
67
68 d[3] = dbl_mul_add (d[0], d[1], d[2]);
69 d[4] = dbl_mul_sub (d[0], d[1], d[2]);
70 d[5] = dbl_neg_mul_add (d[0], d[1], d[2]);
71 d[6] = dbl_neg_mul_sub (d[0], d[1], d[2]);
72 exit (0);
73 }
74
75 /* { dg-final { scan-assembler "vfmaddss" } } */
76 /* { dg-final { scan-assembler "vfmaddsd" } } */
77 /* { dg-final { scan-assembler "vfmsubss" } } */
78 /* { dg-final { scan-assembler "vfmsubsd" } } */
79 /* { dg-final { scan-assembler "vfnmaddss" } } */
80 /* { dg-final { scan-assembler "vfnmaddsd" } } */
81 /* { dg-final { scan-assembler "vfnmsubss" } } */
82 /* { dg-final { scan-assembler "vfnmsubsd" } } */
83