File: pr54894.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (28 lines) | stat: -rw-r--r-- 769 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
/* { dg-do compile } */
/* { dg-require-effective-target size32plus } */

typedef unsigned long long uint64_t;

#define n 4096
double A[n][n] __attribute__((aligned(16)));
double B[n][n] __attribute__((aligned(16)));
double C[n][n] __attribute__((aligned(16)));

#define tilesize 128

typedef double adouble __attribute__((__aligned__(16)));

void foo ()
{
  int ih, jh, kh, il, kl, jl;
  for (ih = 0; ih < n; ih += tilesize) 
    for (jh = 0; jh < n; jh += tilesize)                 
      for (kh = 0; kh < n; kh += tilesize)                      
	for (il = 0; il < tilesize; ++il)
	  {
	    adouble *Ap = (adouble *)&A[ih+il][kh];
	    for (kl = 0; kl < tilesize; ++kl)
	      for (jl = 0; jl < tilesize; ++jl)
		C[ih+il][jh+jl] += Ap[kl] * B[kh+kl][jh+jl];
	  }
}