[Bug tree-optimization/67673] New: support restrict pointer to restrict pointer

[Bug tree-optimization/67673] New: support restrict pointer to restrict pointer

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67673

            Bug ID: 67673
           Summary: support restrict pointer to restrict pointer
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

The test-case gcc/testsuite/g++.dg/tree-ssa/restrict2.C contains an xfail:
...
struct S { int *__restrict p; int q; };

int
f5 (S *__restrict x, S *__restrict y)
{
  x->p[0] = 5;
  y->p[0] = 0;
// We might handle this some day                                                
// { dg-final { scan-tree-dump-times "return 5" 1 "optimized" { xfail *-*-* } }
}
  return x->p[0];
}
...

See also https://gcc.gnu.org/ml/gcc-patches/2011-09/msg01466.html .

[Bug tree-optimization/67673] support restrict pointer to restrict pointer

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67673

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from vries at gcc dot gnu.org ---
https://gcc.gnu.org/ml/gcc-cvs/2015-09/msg00687.html:

Author: rguenth
Date: Wed Sep 23 11:11:48 2015
New Revision: 228040

URL: https://gcc.gnu.org/viewcvs?rev=228040&root=gcc&view=rev
Log:
2015-09-23  Richard Biener  <rguenther@suse.de>

        * tree-ssa-structalias.c (intra_create_variable_infos): Build
        representatives for all restrict qualified pointer destinations.

        * g++.dg/tree-ssa/restrict2.C: Un-XFAIL testcase.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/tree-ssa/restrict2.C
    trunk/gcc/tree-ssa-structalias.c