File: vrp93.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 (35 lines) | stat: -rw-r--r-- 919 bytes parent folder | download | duplicates (6) 
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
 
/* PR target/29776 */
/* PR tree-optimization/61725 */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-vrp1" } */
/* { dg-final { scan-tree-dump-not "link_error" "vrp1"} } */

#define A(fn, arg, min, max) \
  if (__builtin_##fn (arg) < min || __builtin_##fn (arg) > max) \
    link_error ();
#define B(fn, min, max) \
  A (fn, a, min, max) A (fn##l, b, min, max) A (fn##ll, c, min, max)
#define C(fn, min, sub) \
  A (fn, a, min, ((int) sizeof (a) * __CHAR_BIT__ - sub)) \
  A (fn##l, b, min, ((int) sizeof (b) * __CHAR_BIT__ - sub)) \
  A (fn##ll, c, min, ((int) sizeof (c) * __CHAR_BIT__ - sub))

extern void link_error (void);

unsigned int d;
unsigned long e;
unsigned long long f;

void
foo (int a, long b, long long c)
{
  C (ffs, 0, 0)
  a &= 63; b &= 63; c &= 63;
  B (ffs, 0, 6)
  a++; b++; c++;
  B (ffs, 1, 7)
  a -= 2; b -= 2; c -= 2;
  C (ffs, 0, 0)
  a -= 63; b -= 63; c -= 63;
  C (ffs, 1, 0)
}