File: pr15826.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A8-2019-q3-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 571,828 kB
  • sloc: ansic: 2,937,651; cpp: 881,644; ada: 597,189; makefile: 65,528; asm: 56,499; xml: 46,621; exp: 24,747; sh: 19,684; python: 7,256; pascal: 4,370; awk: 3,497; perl: 2,695; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (36 lines) | stat: -rw-r--r-- 529 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
 
/* PR tree-optimization/15826 - don't use "if" to extract a single bit
   bit-field */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-optimized" } */

struct s {
  unsigned int bit : 1;
};

unsigned int
foo (struct s *p)
{
  if (p->bit)
    return 1;
  else
    return 0;
}

unsigned int
bar (struct s *p)
{
  return (unsigned int) (p->bit);
}

unsigned int
andrew (struct s *p)
{
  int i;
  if (p->bit)
    i = 1;
  else
    i = 0;
  return i;
}

/* { dg-final { scan-tree-dump-times " & | goto " 0 "optimized" } } */