[Bug middle-end/55130] New: [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224

[Bug middle-end/55130] New: [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55130

             Bug #: 55130
           Summary: [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at
                    lra-constraints.c:3224
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com


GCC 4.8.0 20121028 (experimental).

cat > bug.c
extern void bar(long long);

int foo(long long a, char b, long long c, long long d)
{
  if (c == 0)
    c = d;

  bar(b + c);

  return a == d;
}
^D
$ gcc -O1 -mregparm=3 -mpreferred-stack-boundary=2 -S bug.c
bug.c: In function 'foo':
bug.c:11:1: internal compiler error: in insn_rhs_dead_pseudo_p, at
lra-constraints.c:3224
 }
 ^
0x84c80c9 insn_rhs_dead_pseudo_p
    ../../gcc-4.8/gcc/lra-constraints.c:3224
0x84c810c init_insn_rhs_dead_pseudo_p
    ../../gcc-4.8/gcc/lra-constraints.c:3240
0x84ce811 lra_constraints(bool)
    ../../gcc-4.8/gcc/lra-constraints.c:3301
0x84c306e lra(_IO_FILE*)
    ../../gcc-4.8/gcc/lra.c:2281
0x848e42e do_reload
    ../../gcc-4.8/gcc/ira.c:4624
0x848e5fb rest_of_handle_reload
    ../../gcc-4.8/gcc/ira.c:4736
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.

[Bug middle-end/55130] [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55130

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-10-29
                 CC|                            |mpolacek at gcc dot
                   |                            |gnu.org, vmakarov at gcc
                   |                            |dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-10-29 23:42:28 UTC ---
Confirmed.  On x86_64 reproducible with -m32.

[Bug middle-end/55130] [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55130

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.0

[Bug middle-end/55130] [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55130

--- Comment #2 from Vladimir Makarov <vmakarov at gcc dot gnu.org> 2012-11-02 14:44:23 UTC ---
Author: vmakarov
Date: Fri Nov  2 14:44:12 2012
New Revision: 193096

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193096
Log:
2012-11-02  Vladimir Makarov  <vmakarov@redhat.com>

    PR middle-end/55130
    * lra-constraints.c (debug_loc_equivalence_change_p): Rename to
    loc_equivalence_change_p.
    (lra_constraints): Check equiv_insn_bitmap for debug insn.  Call
    loc_equivalence_change_p for non-transformed insn.

2012-11-02  Vladimir Makarov  <vmakarov@redhat.com>

    PR middle-end/55150
    * gcc.target/i386/pr55130.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr55130.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-constraints.c
    trunk/gcc/testsuite/ChangeLog

[Bug middle-end/55130] [4.8 Regression] ICE in insn_rhs_dead_pseudo_p, at lra-constraints.c:3224

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55130

Dmitry Gorbachev <d.g.gorbachev at gmail dot com> changed:

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

--- Comment #3 from Dmitry Gorbachev <d.g.gorbachev at gmail dot com> 2012-11-06 16:45:47 UTC ---
Fixed.