File: pr45720.c

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (50 lines) | stat: -rw-r--r-- 864 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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
 
/* { dg-do run } */
/* { dg-options "-ftree-vectorize" } */

float val[256];
float x;
void __attribute__((noinline,noclone))
foo(int len, int beg)
{
  int i;
  for (i = len - 1; i >= beg; --i)
    x += val[i] * 2;
}
void __attribute__((noinline,noclone))
bar(void)
{
  int i;
  for (i = 255; i >= 0; --i)
    x += val[i] * 2;
  for (i = 254; i >= 0; --i)
    x += val[i] * 2;
  for (i = 253; i >= 0; --i)
    x += val[i] * 2;
  for (i = 252; i >= 0; --i)
    x += val[i] * 2;
}
float y[256];
void __attribute__((noinline,noclone))
foobar(void)
{
  int i;
  for (i = 0; i < 252; ++i)
    {
      float l = 0;
      l += val[255 - i] * 2;
      l += val[254 - i] * 2;
      l += val[253 - i] * 2;
      l += val[252 - i] * 2;
      y[i] = l;
    }
}
int main()
{
  foo(256-1, 0);
  foo(256-2, 0);
  foo(256-3, 0);
  foo(256-4, 0);
  bar();
  foobar();
  return 0;
}