[Bug debug/48160] New: prepare_call_arguments failed to handle subreg

[Bug debug/48160] New: prepare_call_arguments failed to handle subreg

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48160

           Summary: prepare_call_arguments failed to handle subreg
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com
                CC: jakub@redhat.com


prepare_call_arguments failed to handle

(call_insn:TI 17 12 21 2 (set (reg:SI 0 ax)
        (call (mem:QI (symbol_ref:DI
("_ZN9__gnu_cxx17__pool_alloc_base17_M_allocate_chunkEmRi") [flags 0x3]
<function_decl 0x7ffff0ac4500 _M_allocate_chunk>) [0 _M_allocate_chunk S1 A8])
            (const_int 0 [0])))
/export/gnu/import/git/gcc-x32/libstdc++-v3/src/pool_allocator.cc:136 935
{*call_value_0_rex64}
     (expr_list:REG_DEAD (reg:SI 5 di)
        (expr_list:REG_DEAD (reg:SI 4 si)
            (expr_list:REG_DEAD (reg:SI 1 dx)
                (nil))))
    (expr_list:REG_DEP_TRUE (use (reg:SI 5 di))
        (expr_list:REG_DEP_TRUE (use (reg:SI 4 si))
            (expr_list:REG_DEP_TRUE (use (reg:SI 1 dx))
                (nil)))))
(gdb) 

which leads to

(gdb) call debug_rtx (item)
(concat:SI (reg:SI 1 dx)
    (subreg:SI (value/u:DI 10:3917 @0x1c537e8/0x1c6de40) 0))

[Bug debug/48160] prepare_call_arguments failed to handle subreg

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48160

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2011-03/msg00965.htm
                   |                            |l
            Version|4.6.0                       |4.7.0
   Target Milestone|---                         |4.7.0

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2011-03-16 22:48:30 UTC ---
A patch is posed at

http://gcc.gnu.org/ml/gcc-patches/2011-03/msg00965.html

[Bug debug/48160] prepare_call_arguments failed to handle subreg

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48160

--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2011-03-17 19:51:06 UTC ---
Author: hjl
Date: Thu Mar 17 19:51:03 2011
New Revision: 171108

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171108
Log:
Check SUBREG in prepare_call_arguments.

2011-03-17  H.J. Lu  <hongjiu.lu@intel.com>

    PR debug/48160
    * var-tracking.c (prepare_call_arguments): Check SUBREG.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/var-tracking.c

[Bug debug/48160] prepare_call_arguments failed to handle subreg

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48160

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

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

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2011-03-17 19:51:57 UTC ---
Fixed.