File: 20040211-1.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 (38 lines) | stat: -rw-r--r-- 763 bytes parent folder | download | duplicates (4) 
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
 
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-cddce2" } */

struct rtx_def;
typedef struct rtx_def *rtx;
extern const char rtx_class[];
void foo (void);
union rtunion_def
{
  rtx rtx;
};
typedef union rtunion_def rtunion;
struct rtx_def
{
  int code;
  rtunion fld[1];
};
static int
can_move_up (rtx insn, int n_insns)
{
  while (n_insns > 0)
    {
      insn = (((insn)->fld[1]).rtx);
      if (((rtx_class[(int) (((insn)->code))]) == 'i'))
        n_insns--;
    }
  return n_insns <= 0;
}
int
com (rtx insn, int blah)
{
  if (!can_move_up (insn, blah))
    foo ();
}

/* Cddce cannot remove possibly infinite loops and there is no way how to
   determine whether the loop in can_move_up ends.  */
/* { dg-final { scan-tree-dump "if " "cddce2"} } */