[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[jojelino at gmail dot com]

------- Comment #1 from jojelino at gmail dot com  2010-08-11 09:57 -------
Created an attachment (id=21451)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21451&action=view)
testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] New: [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[jojelino at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 8971 bytes --]

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In file included from :0:0:
memrefimp.c: In function ‘isspace’:
memrefimp.c:2:50: error: Invalid first operand of MEM_REF.
&_pctype
memrefimp.c:2:81: note: in statement
_pctype.0_1 = _pctype;

memrefimp.c:2:50: error: Invalid address operand in MEM_REF.
_pctype;

_pctype.0_1 = _pctype;

memrefimp.c:2:50: internal compiler error: verify_stmts failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: i686-pc-mingw32-gcc returned 1 exit status
collect2: lto-wrapper returned 1 exit status


-- 
           Summary: [4.6 regression] internal compiler error: verify_stmts
                    failed with -fwhopr
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jojelino at gmail dot com
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[jojelino at gmail dot com]

------- Comment #2 from jojelino at gmail dot com  2010-08-11 09:59 -------
(In reply to comment #1)
> Created an attachment (id=21451)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21451&action=view) [edit]
> testcase
> 

and it is resolved by changing __attribute__ ((dllimport)) to __attribute__
((visibility("default")))


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[steven at gcc dot gnu dot org]

------- Comment #3 from steven at gcc dot gnu dot org  2010-08-11 10:17 -------
WHOPR involved, MEM_REF involved... Richi?


-- 

steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2010-08-11 10:59 -------
Well.  I do not have access to i686-pc-mingw32-gcc and this seems related to

/* Return whether OP is a DECL whose address is function-invariant.  */

bool
decl_address_invariant_p (const_tree op)
{
  /* The conditions below are slightly less strict than the one in
     staticp.  */
...
    case VAR_DECL:
      if (((TREE_STATIC (op) || DECL_EXTERNAL (op))
           && !DECL_DLLIMPORT_P (op))
          || DECL_THREAD_LOCAL_P (op)
          || DECL_CONTEXT (op) == current_function_decl
          || decl_function_context (op) == current_function_decl)
        return true;
      break;

WTF !DECL_DLLIMPORT_P (op)!?  (also noticed by rth recently)

A fix is to remove that check here, but I can't test that.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[t66667 at gmail dot com]

------- Comment #5 from t66667 at gmail dot com  2010-08-25 16:11 -------
Hi,
(In reply to comment #4)
> Well.  I do not have access to i686-pc-mingw32-gcc and this seems related to
> 
> /* Return whether OP is a DECL whose address is function-invariant.  */
> 
> bool
> decl_address_invariant_p (const_tree op)
> {
>   /* The conditions below are slightly less strict than the one in
>      staticp.  */
> ...
>     case VAR_DECL:
>       if (((TREE_STATIC (op) || DECL_EXTERNAL (op))
>            && !DECL_DLLIMPORT_P (op))
>           || DECL_THREAD_LOCAL_P (op)
>           || DECL_CONTEXT (op) == current_function_decl
>           || decl_function_context (op) == current_function_decl)
>         return true;
>       break;
> 
> WTF !DECL_DLLIMPORT_P (op)!?  (also noticed by rth recently)
> 
> A fix is to remove that check here, but I can't test that.
> 

Thanks. Indeed, removal of this check here fixed PR45405.
Tested on Windows 7 x64 multi-lib native GCC trunk.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[t66667 at gmail dot com]

------- Comment #6 from t66667 at gmail dot com  2010-08-25 16:11 -------
*** Bug 45405 has been marked as a duplicate of this bug. ***


-- 

t66667 at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |t66667 at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2010-08-25 17:19 -------
Mine then, thanks for testing the proposed fix.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-08-25 17:19:44
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2010-08-26 14:21 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255

[Bug tree-optimization/45255] [4.6 regression] internal compiler error: verify_stmts failed with -fwhopr

[rguenth at gcc dot gnu dot org]

------- Comment #9 from rguenth at gcc dot gnu dot org  2010-08-26 14:21 -------
Subject: Bug 45255

Author: rguenth
Date: Thu Aug 26 14:20:45 2010
New Revision: 163565

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163565
Log:
2010-08-26  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/45255
        * tree.c (decl_address_invariant_p): DECL_DLLIMPORT_P
        statics and externals are also invariant.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45255