[Bug bootstrap/55049] New: [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[Bug bootstrap/55049] New: [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

             Bug #: 55049
           Summary: [4.8 Regression] bootstrap failed with
                    --with-multilib-list=m32,m64,mx32
    Classification: Unclassified
           Product: gcc
           Version: 4.7.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com


On Linux/x86-64, bootstrap failed with

--with-multilib-list=m32,m64,mx32

[hjl@gnu-tools-1 gcc]$ cat /tmp/foo.c
extern void __morestack_fail (const char *msg);
void
foo (void)
{
  static const char msg[] = "munmap of stack space failed: errno ";
  __morestack_fail (msg);
}
[hjl@gnu-tools-1 gcc]$ ./xgcc -B./ -fPIC -O2 -S -mx32 /tmp/foo.c
/tmp/foo.c: In function ‘foo’:
/tmp/foo.c:7:1: internal compiler error: in extract_loc_address_regs, at
lra-constraints.c:509
 }
 ^
0x8c8fe1 extract_loc_address_regs
    /export/gnu/import/git/gcc/gcc/lra-constraints.c:509
0x8c9938 extract_loc_address_regs
    /export/gnu/import/git/gcc/gcc/lra-constraints.c:705
0x8c9aa6 extract_address_regs
    /export/gnu/import/git/gcc/gcc/lra-constraints.c:747
0x8cd88b process_address
    /export/gnu/import/git/gcc/gcc/lra-constraints.c:2537
0x8ce59a curr_insn_transform
    /export/gnu/import/git/gcc/gcc/lra-constraints.c:2930
0x8d099b lra_constraints(bool)
    /export/gnu/import/git/gcc/gcc/lra-constraints.c:3681
0x8c0533 lra(_IO_FILE*)
    /export/gnu/import/git/gcc/gcc/lra.c:2281
0x875fd1 do_reload
    /export/gnu/import/git/gcc/gcc/ira.c:4613
0x8761ca rest_of_handle_reload
    /export/gnu/import/git/gcc/gcc/ira.c:4719
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-tools-1 gcc]$

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ubizjak at gmail dot com,
                   |                            |vmakarov at redhat dot com
            Version|4.7.3                       |4.8.0
   Target Milestone|---                         |4.8.0

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

--- Comment #1 from Vladimir Makarov <vmakarov at gcc dot gnu.org> 2012-10-24 17:35:50 UTC ---
Author: vmakarov
Date: Wed Oct 24 17:35:37 2012
New Revision: 192771

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192771
Log:
2012-10-24  Vladimir Makarov  <vmakarov@redhat.com>

    PR bootstrap/55049
    * lra-constraints.c (extract_loc_address_regs): Pass top_p for
    ZERO_EXTEND operand.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-constraints.c

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2012-10-24 21:49:40 UTC ---
Author: hjl
Date: Wed Oct 24 21:49:36 2012
New Revision: 192784

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192784
Log:
Add a testcase for PR bootstrap/55049

    PR bootstrap/55049
    * gcc.target/i386/pr55049-1.c: New test. 

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr55049-1.c
Modified:
    trunk/gcc/testsuite/ChangeLog

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2012-10-24 22:34:34 UTC ---
Another testcase:

[hjl@gnu-tools-1 gcc]$ cat /tmp/x.c
enum gomp_schedule_type
{
  GFS_GUIDED,
  GFS_AUTO
};
struct gomp_work_share
{
  enum gomp_schedule_type sched;
};
struct gomp_team_state
{
  struct gomp_work_share *work_share;
};
struct gomp_thread
{
  void *data;
  struct gomp_team_state ts;
};
extern __thread struct gomp_thread gomp_tls_data;
_Bool
foo (void)
{
  return gomp_tls_data.ts.work_share->sched == GFS_GUIDED;
}
[hjl@gnu-tools-1 gcc]$ ./xgcc -B./ -mx32 -S -O2 /tmp/x.c
/tmp/x.c: In function ‘foo’:
/tmp/x.c:24:1: internal compiler error: in check_rtl, at lra.c:2014
 }
 ^
0x8bfdbd check_rtl
    /export/gnu/import/git/gcc/gcc/lra.c:2014
0x8c071d lra(_IO_FILE*)
    /export/gnu/import/git/gcc/gcc/lra.c:2372
0x875f89 do_reload
    /export/gnu/import/git/gcc/gcc/ira.c:4613
0x876182 rest_of_handle_reload
    /export/gnu/import/git/gcc/gcc/ira.c:4719
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-tools-1 gcc]$

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

--- Comment #4 from Uros Bizjak <ubizjak at gmail dot com> 2012-10-25 06:52:15 UTC ---
LRA generates

(gdb) call debug_rtx (insn)
(insn 6 20 7 2 (set (reg/f:SI 0 ax [orig:65 gomp_tls_data.ts.work_share ] [65])
        (mem/f/j/c:SI (plus:SI (reg:SI 2 cx [68])
                (reg:DI 0 ax [64])) [0 gomp_tls_data.ts.work_share+0 S4 A32]))
/tmp/x.i:23 65 {*movsi_internal}
     (expr_list:REG_DEAD (reg:SI 2 cx [68])
        (expr_list:REG_DEAD (reg:DI 0 ax [64])
            (nil))))


from

(insn 6 5 7 2 (set (reg/f:SI 65 [ gomp_tls_data.ts.work_share ])
        (mem/f/j/c:SI (plus:DI (plus:DI (zero_extend:DI (unspec:SI [
                                (const_int 0 [0])
                            ] UNSPEC_TP))
                    (reg:DI 64))
                (const_int 4 [0x4])) [0 gomp_tls_data.ts.work_share+0 S4 A32])) 
/tmp/x.i:23 65 {*movsi_internal}
     (expr_list:REG_DEAD (reg:DI 64)
        (nil)))

It fails to properly handle zero_extend.

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2012-10-26 06:42:00 UTC ---
Author: rsandifo
Date: Fri Oct 26 06:41:53 2012
New Revision: 192837

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192837
Log:
gcc/
    PR bootstrap/55049
    * Makefile.in (rtlanal.o): Add dependency on addresses.h.
    * rtl.h (address_info): New structure.
    (strip_address_mutations, decompose_address, decompose_lea_address)
    (decompose_mem_address, update_address, get_index_scale)
    (get_index_code): Declare.
    * rtlanal.c: Include addresses.h.
    (strip_address_mutations, must_be_base_p, must_be_index_p)
    (set_address_segment, set_address_base, set_address_index)
    (set_address_disp, decompose_incdec_address, decompose_automod_address)
    (extract_plus_operands, baseness, decompose_normal_address)
    (decompose_address, decompose_lea_address, decompose_mem_address)
    (update_address, get_index_scale, get_index_code): New functions.
    * lra-constraints.c (strip_subreg): New function.
    (address, extract_loc_address_regs, extract_address_regs)
    (get_index_scale): Delete.
    (process_addr_reg): Apply strip_subreg to the location.
    (uses_hard_regs_p): Use decompose_mem_address.
    (valid_address_p, base_plus_disp_to_reg, can_add_disp_p)
    (equiv_address_substitution): Take an address_info rather
    than an address.  Remove other arguments.  Avoid using Pmode.
    (process_address): Use decompose_mem_address and decompose_lea_address.
    Update calls to above functions.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/lra-constraints.c
    trunk/gcc/rtl.h
    trunk/gcc/rtlanal.c

[Bug bootstrap/55049] [4.8 Regression] bootstrap failed with --with-multilib-list=m32,m64,mx32

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55049

H.J. Lu <hjl.tools at gmail dot com> changed:

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

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2012-10-26 11:47:31 UTC ---
Fixed.