[Bug tree-optimization/35403] New: ipa-reference.c does not change a default initialized static variable to be readonly

[pinskia at gcc dot gnu dot org]

Testcase:
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-optimized" } */

static int conststaticvariable;

int f(void)
{
  return conststaticvariable;
}

/* There should be no reference to conststaticvariable as we should have
inlined the 0
   as IPA reference should have marked the variable as a const as it is not set
in the IR.  */
/* { dg-final { scan-tree-dump-times "conststaticvariable" 0 "optimized"} } */
/* { dg-final { cleanup-tree-dump "optimized" } } */

This depends on the fix for PR 35402 to be optimized fully.


-- 
           Summary: ipa-reference.c does not change a default initialized
                    static variable to be readonly
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35403