20030703-1.c

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· C语言 代码 · 共 22 行

/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-dom3" } */
  
extern void abort (void);
extern int blah[];

foo(int index)
{
  if (blah [(unsigned int)index] != 0)
    abort ();
  if (blah [(unsigned int)index] != 0)
    abort ();
}

/* There should be precisely one load of blah.  If there is
   more than one, then the dominator optimizations failed.  */
/* { dg-final { scan-tree-dump-times "blah" 1 "dom3"} } */
 
/* There should be exactly one IF conditional.  */
/* { dg-final { scan-tree-dump-times "if " 1 "dom3"} } */