File: attr-alias.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 (27 lines) | stat: -rw-r--r-- 828 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
 
/* { dg-do compile } */
/* { dg-require-alias "" } */
/* { dg-options "-O2 -fdump-tree-optimized -std=gnu89" } */
void abort (void);
__attribute__ ((weak))
int test() 
{
   return 0;
}
static int test2() __attribute__ ((alias("test")));
static int test1() __attribute__ ((weakref)) __attribute__ ((alias("test2")));
static int test4() __attribute__ ((weakref)) __attribute__ ((alias("test")));
main()
{
  test();
  test2();
  test3();
  test4();
}

/* calls to test1 and test2 can be inlined and optmized away. Calls
   to test and test4 are overwritable.  */

/* { dg-final { scan-tree-dump-times "  test " 1 "optimized" } } */
/* { dg-final { scan-tree-dump-times "  test4 " 1 "optimized" } } */
/* { dg-final { scan-tree-dump-not "  test1 " "optimized" } } */
/* { dg-final { scan-tree-dump-not "  test2 " "optimized" } } */