1 /* { dg-do compile } */
2 /* { dg-require-effective-target size32plus } */
3 
4 typedef unsigned long long uint64_t;
5 
6 #define n 4096
7 double A[n][n] __attribute__((aligned(16)));
8 double B[n][n] __attribute__((aligned(16)));
9 double C[n][n] __attribute__((aligned(16)));
10 
11 #define tilesize 128
12 
13 typedef double adouble __attribute__((__aligned__(16)));
14 
foo()15 void foo ()
16 {
17   int ih, jh, kh, il, kl, jl;
18   for (ih = 0; ih < n; ih += tilesize)
19     for (jh = 0; jh < n; jh += tilesize)
20       for (kh = 0; kh < n; kh += tilesize)
21 	for (il = 0; il < tilesize; ++il)
22 	  {
23 	    adouble *Ap = (adouble *)&A[ih+il][kh];
24 	    for (kl = 0; kl < tilesize; ++kl)
25 	      for (jl = 0; jl < tilesize; ++jl)
26 		C[ih+il][jh+jl] += Ap[kl] * B[kh+kl][jh+jl];
27 	  }
28 }
29