File: ldist-4.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A7-2018-q2-5
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 539,188 kB
  • sloc: ansic: 2,739,935; cpp: 848,238; ada: 602,637; makefile: 62,919; asm: 55,635; xml: 46,238; exp: 23,020; sh: 19,616; python: 6,371; pascal: 3,889; awk: 3,278; perl: 2,691; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (26 lines) | stat: -rw-r--r-- 602 bytes parent folder | download | duplicates (2) 
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
 
/* { dg-do compile } */ 
/* { dg-options "-O2 -ftree-loop-distribution -fdump-tree-ldist-all" } */

int loop1 (int k)
{
  unsigned int i;
  unsigned int j;
  int a[100], b[100][100];

  a[0] = k;
  for (i = 1; i < 100; i ++)
    {
      for (j = 1; j < 100; j++)
	{
	  a[j] = k * i;
	  b[i][j] = a[j-1] + k;
	}
    }

  return b[100-1][1];
}

/* The current cost model fuses the two partitions because they have
   similar memory accesses.  */
/* { dg-final { scan-tree-dump "similar memory accesses" "ldist" } } */
/* { dg-final { scan-tree-dump-times "distributed: split to 2 loops" 0 "ldist" } } */