[Bug bootstrap/45519] New: [4.6 regression] Failed to bootstrap

[Bug bootstrap/45519] New: [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

On Linux/x86, revision 163804 gave:

/home/regress/tbox/svn-gcc/libgcc/../gcc/unwind-dw2-fde-glibc.c: In function
'_Unwind_IteratePhdrCallback':
/home/regress/tbox/svn-gcc/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: error:
Invalid first operand of MEM_REF.
D.10501_117
/home/regress/tbox/svn-gcc/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: note: in
statement
D.11538_238 = &MEM[(struct Elf32_Dyn *)D.10501_117 + 8B];

/home/regress/tbox/svn-gcc/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: 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.
make[3]: *** [unwind-dw2-fde-glibc.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory
`/home/regress/tbox/native/build/i686-pc-linux-gnu/libgcc'
make[2]: *** [all-stage1-target-libgcc] Error 2
make[2]: Leaving directory `/home/regress/tbox/native/build'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/regress/tbox/native/build'
make: *** [bootstrap] Error 2

Revision 163799 is OK. It may be caused by revision 163802:

http://gcc.gnu.org/ml/gcc-cvs/2010-09/msg00093.html


-- 
           Summary: [4.6 regression] Failed to bootstrap
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

-- 

hjl dot tools at gmail dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-09-03 13:22 -------
Can you attach preprocessed source that allows reproducing on x86_64?  Thx.


-- 

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         |2010-09-03 13:22:15
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #2 from hjl dot tools at gmail dot com  2010-09-03 13:31 -------
[hjl@gnu-1 gcc]$ ./xgcc -B./ -m32 -O2 -S /tmp/pr45519.i
../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c: In function
\u2018_Unwind_IteratePhdrCallback\u2019:
../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: error: Invalid
first operand of MEM_REF.
D.11075_117
../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: note: in
statement
D.12093_230 = &MEM[(struct Elf32_Dyn *)D.11075_117 + 8B];

../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: 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.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2010-09-03 13:32 -------
Created an attachment (id=21682)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21682&action=view)
A testcase

[hjl@gnu-1 gcc]$ ./xgcc -B./ -m32 -O2 -S /tmp/pr45519.i
../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c: In function
\u2018_Unwind_IteratePhdrCallback\u2019:
../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: error: Invalid
first operand of MEM_REF.
D.11075_117
../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: note: in
statement
D.12093_230 = &MEM[(struct Elf32_Dyn *)D.11075_117 + 8B];

../../../src-trunk/libgcc/../gcc/unwind-dw2-fde-glibc.c:134:1: 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.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2010-09-03 13:43 -------
Reduced testcase:

typedef struct { unsigned int p_vaddr; } Elf32_Phdr;
typedef struct { int d_tag; } Elf32_Dyn;
typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
int
_Unwind_IteratePhdrCallback (const Elf32_Phdr *p_dynamic,
                             _Unwind_Ptr load_base)
{
  Elf32_Dyn *dyn = (Elf32_Dyn *)  ((p_dynamic->p_vaddr) + (load_base));
  for (; dyn->d_tag != 0 ; dyn++)  
    if (dyn->d_tag == 3)
      return 0;
  return 1;
}
pr45519.3.i: In function '_Unwind_IteratePhdrCallback':
pr45519.3.i:11:1: error: Invalid first operand of MEM_REF.
D.2729_7
pr45519.3.i:11:1: note: in statement
D.2745_1 = &MEM[(struct Elf32_Dyn *)D.2729_7 + 4B];

pr45519.3.i:11:1: 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.


Other reduced testcase:

typedef struct { unsigned int p_vaddr; } Elf32_Phdr;
typedef struct { int d_tag; } Elf32_Dyn;
int
_Unwind_IteratePhdrCallback (const Elf32_Phdr *p_dynamic,
                             unsigned int load_base)
{
  Elf32_Dyn *dyn = (Elf32_Dyn *)  ((p_dynamic->p_vaddr) + (load_base));
  for (; dyn->d_tag != 0 ; dyn++)  
    if (dyn->d_tag == 3)
      return 0;
  return 1;
}
pr45519.3.i:4:1: internal compiler error: in build2_stat, at tree.c:3724
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2010-09-03 14:21 -------
Hmhm, IVOPTs expands crap into arguments.

Index: gcc/tree-ssa-loop-ivopts.c
===================================================================
--- gcc/tree-ssa-loop-ivopts.c  (revision 163817)
+++ gcc/tree-ssa-loop-ivopts.c  (working copy)
@@ -1023,6 +1023,11 @@ find_bivs (struct ivopts_data *data)

       type = TREE_TYPE (PHI_RESULT (phi));
       base = fold_convert (type, base);
+      STRIP_USELESS_TYPE_CONVERSION (base);
+      if (CONVERT_EXPR_P (base)
+         && (POINTER_TYPE_P (TREE_TYPE (base))
+             != POINTER_TYPE_P (TREE_OPERAND (base, 0))))
+       continue;
       if (step)
        {
          if (POINTER_TYPE_P (type))


fixes the testcase, I am bootstrapping and testing this on x86_64 as a
short-term fix but have to think about it some more.

Can you check if 32bit bootstrap succeeds with that?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2010-09-03 14:33 -------
Created an attachment (id=21683)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21683&action=view)
alternate fix


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #7 from hjl dot tools at gmail dot com  2010-09-03 14:52 -------
(In reply to comment #6)
> Created an attachment (id=21683)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21683&action=view) [edit]
> alternate fix
> 

Doesn't work on Linux/x86. I got

/export/gnu/import/git/gcc/libgcc/../gcc/libgcov.c: In function
\u2018__gcov_merge_single\u2019:
/export/gnu/import/git/gcc/libgcc/../gcc/libgcov.c:636:1: internal compiler
error: in fold_binary_loc, at fold-const.c:9411
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [_gcov_merge_single.o] Error 1


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #8 from hjl dot tools at gmail dot com  2010-09-03 15:37 -------
(In reply to comment #5)
> Hmhm, IVOPTs expands crap into arguments.
> 
> Index: gcc/tree-ssa-loop-ivopts.c
> ===================================================================
> --- gcc/tree-ssa-loop-ivopts.c  (revision 163817)
> +++ gcc/tree-ssa-loop-ivopts.c  (working copy)
> @@ -1023,6 +1023,11 @@ find_bivs (struct ivopts_data *data)
> 
>        type = TREE_TYPE (PHI_RESULT (phi));
>        base = fold_convert (type, base);
> +      STRIP_USELESS_TYPE_CONVERSION (base);
> +      if (CONVERT_EXPR_P (base)
> +         && (POINTER_TYPE_P (TREE_TYPE (base))
> +             != POINTER_TYPE_P (TREE_OPERAND (base, 0))))
> +       continue;
>        if (step)
>         {
>           if (POINTER_TYPE_P (type))
> 
> 
> fixes the testcase, I am bootstrapping and testing this on x86_64 as a
> short-term fix but have to think about it some more.
> 
> Can you check if 32bit bootstrap succeeds with that?
> 

I can bootstrap C with this one on Linux/x86.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #9 from hjl dot tools at gmail dot com  2010-09-03 16:48 -------
It also failed on Linux/ia64 with similar error.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[hjl dot tools at gmail dot com]

------- Comment #10 from hjl dot tools at gmail dot com  2010-09-03 17:09 -------
(In reply to comment #8)
> (In reply to comment #5)
> > Hmhm, IVOPTs expands crap into arguments.
> > 
> > Index: gcc/tree-ssa-loop-ivopts.c
> > ===================================================================
> > --- gcc/tree-ssa-loop-ivopts.c  (revision 163817)
> > +++ gcc/tree-ssa-loop-ivopts.c  (working copy)
> > @@ -1023,6 +1023,11 @@ find_bivs (struct ivopts_data *data)
> > 
> >        type = TREE_TYPE (PHI_RESULT (phi));
> >        base = fold_convert (type, base);
> > +      STRIP_USELESS_TYPE_CONVERSION (base);
> > +      if (CONVERT_EXPR_P (base)
> > +         && (POINTER_TYPE_P (TREE_TYPE (base))
> > +             != POINTER_TYPE_P (TREE_OPERAND (base, 0))))
> > +       continue;
> >        if (step)
> >         {
> >           if (POINTER_TYPE_P (type))
> > 
> > 
> > fixes the testcase, I am bootstrapping and testing this on x86_64 as a
> > short-term fix but have to think about it some more.
> > 
> > Can you check if 32bit bootstrap succeeds with that?
> > 
> 
> I can bootstrap C with this one on Linux/x86.
> 

With default languages, I got one regression:

Executing on host: /export/build/gnu/gcc-32bit/build-i686-linux/gcc/xgcc
-B/export/build/gnu/gcc-32bit/build-i686-linux/gcc/
/net/gnu-6/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/pr38240.c   
-ansi -pedantic-errors -S  -o pr38240.s    (timeout = 300)
/net/gnu-6/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/pr38240.c:
In function 'g':^M
/net/gnu-6/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/pr38240.c:8:21:
internal compiler error: in convert_move, at expr.c:326^M
Please submit a full bug report,^M 
with preprocessed source if appropriate.^M
See <http://gcc.gnu.org/bugs.html> for instructions.^M
compiler exited with status 1

with revision 163817 plus the fix.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[jakub at gcc dot gnu dot org]

------- Comment #11 from jakub at gcc dot gnu dot org  2010-09-04 08:01 -------
*** Bug 45533 has been marked as a duplicate of this bug. ***


-- 

jakub at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #12 from rguenth at gcc dot gnu dot org  2010-09-04 09:34 -------
Created an attachment (id=21693)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21693&action=view)
patch w/o typos...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #14 from rguenth at gcc dot gnu dot org  2010-09-04 10:21 -------
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=45519

[Bug bootstrap/45519] [4.6 regression] Failed to bootstrap

[rguenth at gcc dot gnu dot org]

------- Comment #13 from rguenth at gcc dot gnu dot org  2010-09-04 10:21 -------
Subject: Bug 45519

Author: rguenth
Date: Sat Sep  4 10:21:07 2010
New Revision: 163858

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163858
Log:
2010-09-04  Richard Guenther  <rguenther@suse.de>

        PR bootstrap/45519
        * tree-flow.h (force_gimple_operand_1): Declare.
        (force_gimple_operand_gsi_1): Likewise.
        * gimplify.c (force_gimple_operand_1): New worker taking a
        gimple predicate for ...
        (force_gimple_operand): ... which now wraps it.
        (force_gimple_operand_gsi_1, force_gimple_operand_gsi): Likewise.
        * tree-ssa-loop-ivopts.c (find_interesting_uses_address): Revert
        last change.
        * tree-ssa-address.c (gimplify_mem_ref_parts): Use
        force_gimple_operand_gsi_1 with is_gimple_mem_ref_addr.
        (create_mem_ref): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimplify.c
    trunk/gcc/tree-flow.h
    trunk/gcc/tree-ssa-address.c
    trunk/gcc/tree-ssa-loop-ivopts.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45519