[Bug tree-optimization/26387] New: Should promote heap allocation to stack allocation

[rguenth at gcc dot gnu dot org]

void foo(void)
{
  int *p = new int;
  delete *p;
}

storage allocation should be changed from heap to stack allocation if
possible and of known (low) size.  This way allocation can be optimized
away completely in some cases.  Such opportunities are often exposed
by inlining of libstdc++ container operations.


-- 
           Summary: Should promote heap allocation to stack allocation
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26387