[Bug c++/16091] New: -fdump-tree-original broken by callgraph

[Bug c++/16091] New: -fdump-tree-original broken by callgraph

[ebotcazou at gcc dot gnu dot org]

-fdump-tree-original doesn't dump the original function trees anymore when
optimization is enabled; instead, it is an alias for -fdump-tree-inlined.

The problem is that -fdump-tree-original is handled by optimize_function, which
is called by expand_body.  But expand_body is
lang_hooks.callgraph.expand_function for the C++ front-end and is invoked by
cgraph_expand_function *after* cgraph_optimize_function, the latter doing
tree-inlining when optimization is enabled.

-- 
           Summary: -fdump-tree-original broken by callgraph
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ebotcazou at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: *-*-*
  GCC host triplet: *-*-*
GCC target triplet: *-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16091

[Bug c++/16091] [3.4 only] -fdump-tree-original broken by callgraph

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-20 16:40 -------
This happens differently on the mainline.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|-fdump-tree-original broken |[3.4 only] -fdump-tree-
                   |by callgraph                |original broken by callgraph
   Target Milestone|---                         |3.4.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16091

[Bug c++/16091] [3.4 regression] -fdump-tree-original broken by callgraph

[ebotcazou at gcc dot gnu dot org]

------- Additional Comments From ebotcazou at gcc dot gnu dot org  2004-07-09 08:43 -------
Not sure this will ever be fixed, but it's nonetheless a regression.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[3.4 only] -fdump-tree-     |[3.4 regression] -fdump-
                   |original broken by callgraph|tree-original broken by
                   |                            |callgraph


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16091

[Bug c++/16091] [3.4 regression] -fdump-tree-original broken by callgraph

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-15 04:00 -------
Confirmed, an easy example code:
static inline int f()
{
  return 0;
}
int main()
{
  return f();
}

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-15 04:00:50
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16091

[Bug c++/16091] [3.4 regression] -fdump-tree-original broken by callgraph

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-17 06:28 -------
We'll not try to fix this in GCC 3.4.x; it's not necessary for users.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |WONTFIX
   Target Milestone|3.4.2                       |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16091