[Bug c/32477] New: ice for legal code with -O2 -ftree-vectorize

[Bug c/32477] New: ice for legal code with -O2 -ftree-vectorize

[dcb314 at hotmail dot com]

I just tried to compile Suse Linux package hwinfo-13.35-18 with the
GNU C compiler version 4.3 snapshot 20070622

The compiler said

i10_vbios.c: In function 'int10_bios_ok':
i10_vbios.c:154: warning: cast to pointer from integer of different size
i10_vbios.c: In function 'InitInt10':
i10_vbios.c:80: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Here is some additional help from valgrind

==10659== Invalid read of size 2
==10659==    at 0x698243: set_bb_for_stmt (tree-cfg.c:2629)
==10659==    by 0x6994B1: bsi_insert_after (tree-cfg.c:2740)
==10659==    by 0x69A8D4: bsi_insert_on_edge_immediate (tree-cfg.c:3007)
==10659==    by 0xA283A5: vect_create_data_ref_ptr (tree-vect-transform.c:805)
==10659==    by 0xA2B7EA: vectorizable_load (tree-vect-transform.c:4566)
==10659==    by 0xA35164: vect_transform_stmt (tree-vect-transform.c:4923)
==10659==    by 0xA359A8: vect_transform_loop (tree-vect-transform.c:5912)
==10659==    by 0x7B1271: vectorize_loops (tree-vectorizer.c:2306)
==10659==    by 0x618B78: execute_one_pass (passes.c:1125)
==10659==    by 0x618D4F: execute_pass_list (passes.c:1178)
==10659==    by 0x618D64: execute_pass_list (passes.c:1179)
==10659==    by 0x618D64: execute_pass_list (passes.c:1179)
==10659==  Address 0x0 is not stack'd, malloc'd or (recently) free'd

Preprocessed source code attached. Flags -O2 -ftree-vectorize
required.


-- 
           Summary: ice for legal code with -O2 -ftree-vectorize
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dcb314 at hotmail dot com
  GCC host triplet: x86_64-suse-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32477

[Bug c/32477] ice for legal code with -O2 -ftree-vectorize

[dcb314 at hotmail dot com]

------- Comment #1 from dcb314 at hotmail dot com  2007-06-24 09:15 -------
Created an attachment (id=13772)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13772&action=view)
C source code


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32477

[Bug tree-optimization/32477] ice for legal code with -O2 -ftree-vectorize

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2007-06-24 09:25 -------
Related to PR 32230 (that is we have the same issue but different places).
This case, we call vect_create_addr_base_for_vector_ref and then expect the
new_stmt_list not be to empty.

I am starting to think we should have bsi_insert_on_edge_immediate just return
NULL when it is past NULL now.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
          Component|c                           |tree-optimization


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32477

[Bug tree-optimization/32477] ice for legal code with -O2 -ftree-vectorize

[irar at il dot ibm dot com]

------- Comment #3 from irar at il dot ibm dot com  2007-07-01 13:21 -------
A fix to PR 32230 http://gcc.gnu.org/ml/gcc-patches/2007-07/msg00018.html fixes
this one too.

Ira


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32477

[Bug tree-optimization/32477] ice for legal code with -O2 -ftree-vectorize

[irar at gcc dot gnu dot org]

------- Comment #4 from irar at gcc dot gnu dot org  2007-07-02 10:27 -------
Subject: Bug 32477

Author: irar
Date: Mon Jul  2 10:27:27 2007
New Revision: 126196

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126196
Log:
        PR tree-optimization/32230
        PR tree-optimization/32477
        * tree-vect-analyze.c (vect_analyze_data_refs): Fail if base
        address is a constant.


Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr32230.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-analyze.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32477

[Bug tree-optimization/32477] ice for legal code with -O2 -ftree-vectorize

[irar at il dot ibm dot com]

------- Comment #5 from irar at il dot ibm dot com  2007-07-11 10:49 -------
Fixed.


-- 

irar at il dot ibm dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32477