1 /* Test that the compiler properly optimizes floating point multiply and add
2 instructions into fmaddss, fmsubss, fnmaddss, fnmsubss on SSE5 systems. */
4 /* { dg-do compile } */
5 /* { dg-require-effective-target lp64 } */
6 /* { dg-options "-O2 -msse5 -mfused-madd" } */
8 extern void exit (int);
11 flt_mul_add (float a, float b, float c)
17 dbl_mul_add (double a, double b, double c)
23 flt_mul_sub (float a, float b, float c)
29 dbl_mul_sub (double a, double b, double c)
35 flt_neg_mul_add (float a, float b, float c)
37 return (-(a * b)) + c;
41 dbl_neg_mul_add (double a, double b, double c)
43 return (-(a * b)) + c;
47 flt_neg_mul_sub (float a, float b, float c)
49 return (-(a * b)) - c;
53 dbl_neg_mul_sub (double a, double b, double c)
55 return (-(a * b)) - c;
58 float f[10] = { 2, 3, 4 };
59 double d[10] = { 2, 3, 4 };
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]);
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]);
75 /* { dg-final { scan-assembler "fmaddss" } } */
76 /* { dg-final { scan-assembler "fmaddsd" } } */
77 /* { dg-final { scan-assembler "fmsubss" } } */
78 /* { dg-final { scan-assembler "fmsubsd" } } */
79 /* { dg-final { scan-assembler "fnmaddss" } } */
80 /* { dg-final { scan-assembler "fnmaddsd" } } */
81 /* { dg-final { scan-assembler "fnmsubss" } } */
82 /* { dg-final { scan-assembler "fnmsubsd" } } */