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/* PR tree-optimization/21658
   CCP did not propagate an ADDR_EXPR far enough, preventing the "if"
   statement below from being folded.  */
 
/* { dg-do compile } */
/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-ccp-details" } */
 
void link_error (void);
 
void
f (void)
{
  int a[10];
  int *p = &a[5];
  int *q = p - 1;
  if (q != &a[4])
    link_error ();
}
 
/* { dg-final { scan-tree-dump-times "Folded statement: if " 1 "ccp"} } */
/* { dg-final { cleanup-tree-dump "ccp" } } */

Line No.	Rev	Author	Line
1	149	jeremybenn	`/* PR tree-optimization/21658`
2			`CCP did not propagate an ADDR_EXPR far enough, preventing the "if"`
3			`statement below from being folded. */`
4
5			`/* { dg-do compile } */`
6			`/* { dg-options "-O2 -fno-tree-dominator-opts -fdump-tree-ccp-details" } */`
7
8			`void link_error (void);`
9
10			`void`
11			`f (void)`
12			`{`
13			`int a[10];`
14			`int *p = &a[5];`
15			`int *q = p - 1;`
16			`if (q != &a[4])`
17			`link_error ();`
18			`}`
19
20			`/* { dg-final { scan-tree-dump-times "Folded statement: if " 1 "ccp"} } */`
21			`/* { dg-final { cleanup-tree-dump "ccp" } } */`

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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [pr21658.c] - Blame information for rev 816