File: pr65215-2.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A12.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 959,712 kB
  • sloc: cpp: 3,275,382; ansic: 2,061,766; ada: 840,956; f90: 208,513; makefile: 76,132; asm: 73,433; xml: 50,448; exp: 34,146; sh: 32,436; objc: 15,637; fortran: 14,012; python: 11,991; pascal: 6,787; awk: 4,779; perl: 3,054; yacc: 338; ml: 285; lex: 201; haskell: 122
file content (24 lines) | stat: -rw-r--r-- 608 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
/* PR tree-optimization/65215 */

static inline unsigned int
foo (unsigned int x)
{
  return (x >> 24) | ((x >> 8) & 0xff00) | ((x << 8) & 0xff0000) | (x << 24);
}

__attribute__((noinline, noclone)) unsigned long long
bar (unsigned long long *x)
{
  return ((unsigned long long) foo (*x) << 32) | foo (*x >> 32);
}

int
main ()
{
  if (__CHAR_BIT__ != 8 || sizeof (unsigned int) != 4 || sizeof (unsigned long long) != 8)
    return 0;
  unsigned long long l = foo (0xfeedbea8U) | ((unsigned long long) foo (0xdeadbeefU) << 32);
  if (bar (&l) != 0xfeedbea8deadbeefULL)
    __builtin_abort ();
  return 0;
}