[Bug middle-end/59330] New: Crash in is_gimple_reg_type

[Bug middle-end/59330] New: Crash in is_gimple_reg_type

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

            Bug ID: 59330
           Summary: Crash in is_gimple_reg_type
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: d.g.gorbachev at gmail dot com

======= 8< =======
void free(void *p)
{
}

void *foo(void)
{
  return 0;
}

int main(void)
{
  void *p = foo();
  free(p);
  return 0;
}
======= >8 =======

$ gcc -O 1.c
1.c: In function 'main':
1.c:15:1: internal compiler error: Segmentation fault
 }
 ^
0x86dfff0 crash_signal
    ../../gcc-4.9/gcc/toplev.c:336
0x871992f is_gimple_reg_type
    ../../gcc-4.9/gcc/gimple-expr.h:74
0x871992f verify_gimple_call
    ../../gcc-4.9/gcc/tree-cfg.c:3190
0x871ac23 verify_gimple_stmt
    ../../gcc-4.9/gcc/tree-cfg.c:4306
0x8721a9a verify_gimple_in_cfg(function*)
    ../../gcc-4.9/gcc/tree-cfg.c:4765
0x86158d5 execute_function_todo
    ../../gcc-4.9/gcc/passes.c:1843
0x8615a5b do_per_function
    ../../gcc-4.9/gcc/passes.c:1573
0x8615bee execute_todo
    ../../gcc-4.9/gcc/passes.c:1877
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/59330] [4.7/4.8/4.9 Regression] Crash in is_gimple_reg_type

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-28
                 CC|                            |mpolacek at gcc dot gnu.org
   Target Milestone|---                         |4.7.4
            Summary|Crash in is_gimple_reg_type |[4.7/4.8/4.9 Regression]
                   |                            |Crash in is_gimple_reg_type
     Ever confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.

With 4.8:
i.c: In function ‘main’:
i.c:15:1: internal compiler error: Segmentation fault
 }
 ^
0x7e0a8f crash_signal
    /home/marek/src/gcc/gcc/toplev.c:332
0x8ecb9b useless_type_conversion_p(tree_node*, tree_node*)
    /home/marek/src/gcc/gcc/tree-ssa.c:1198
0x8ed37d types_compatible_p(tree_node*, tree_node*)
    /home/marek/src/gcc/gcc/tree-ssa.c:1421
0x68f4d4 gimple_check_call_args
    /home/marek/src/gcc/gcc/gimple-low.c:242
0x68f4d4 gimple_check_call_matching_types(gimple_statement_d*, tree_node*)
    /home/marek/src/gcc/gcc/gimple-low.c:288
0x59efa4 cgraph_create_edge_1
    /home/marek/src/gcc/gcc/cgraph.c:818
0x59fa7d cgraph_create_edge(cgraph_node*, cgraph_node*, gimple_statement_d*,
long, int)
    /home/marek/src/gcc/gcc/cgraph.c:838
0x5a32a9 rebuild_cgraph_edges()
    /home/marek/src/gcc/gcc/cgraphbuild.c:434
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Subject: [Bug middle-end/59327] [4.9 Regression] warning in expand_used_vars
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idY327

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-28
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |4.9.0
            Summary|warning in expand_used_vars |[4.9 Regression] warning in
                   |                            |expand_used_vars
     Ever confirmed|0                           |1

[Bug middle-end/59330] [4.7/4.8/4.9 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2013-11-28 00:00:00         |
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) call debug_tree (arg)
 <ssa_name 0x7ffff6d05d38 nothrow var <var_decl 0x7ffff6e47000 p>def_stmt 

    version 1 in-free-list>

from cddce.  I'll have a look.

[Bug middle-end/59330] [4.7/4.8/4.9 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Nov 28 14:52:44 2013
New Revision: 205486

URL: http://gcc.gnu.org/viewcvs?rev=205486&root=gcc&view=rev
Log:
2013-11-28  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59330
    * tree-ssa-dce.c (eliminate_unnecessary_stmts): Simplify
    and fix delayed marking of free calls not necessary.

    * gcc.dg/torture/pr59330.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr59330.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dce.c

[Bug middle-end/59330] [4.7/4.8 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.9.0
            Summary|[4.7/4.8/4.9 Regression]    |[4.7/4.8 Regression] Crash
                   |Crash in is_gimple_reg_type |in is_gimple_reg_type
      Known to fail|4.9.0                       |

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.

[Bug middle-end/59330] [4.7/4.8 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

Bug 59330 depends on bug 59334, which changed state.

Bug 59334 Summary: [4.9 Regression] r205486 caused many failures
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59334

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

[Bug middle-end/59330] [4.7/4.8 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Dec  6 14:14:34 2013
New Revision: 205741

URL: http://gcc.gnu.org/viewcvs?rev=205741&root=gcc&view=rev
Log:
2013-12-06  Richard Biener  <rguenther@suse.de>

    Backport from mainline
    2013-11-29  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59334
    * tree-ssa-dce.c (eliminate_unnecessary_stmts): Fix bug
    in previous commit.

    2013-11-28  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59330
    * tree-ssa-dce.c (eliminate_unnecessary_stmts): Simplify
    and fix delayed marking of free calls not necessary.

    * gcc.dg/torture/pr59330.c: New testcase.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr59330.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_8-branch/gcc/tree-ssa-dce.c

[Bug middle-end/59330] [4.7 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
      Known to fail|4.7.4                       |4.7.3

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.

[Bug middle-end/59330] [4.7 Regression] Crash in is_gimple_reg_type

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59330

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed May  7 10:07:09 2014
New Revision: 210147

URL: http://gcc.gnu.org/viewcvs?rev=210147&root=gcc&view=rev
Log:
2014-05-07  Richard Biener  <rguenther@suse.de>

    Backport from mainline
    2013-11-29  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59334
    * tree-ssa-dce.c (eliminate_unnecessary_stmts): Fix bug
    in previous commit.

    2013-11-28  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59330
    * tree-ssa-dce.c (eliminate_unnecessary_stmts): Simplify
    and fix delayed marking of free calls not necessary.

    * gcc.dg/torture/pr59330.c: New testcase.

    2014-01-09  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/59715
    * tree-cfg.h (split_critical_edges): Declare.
    * tree-cfg.c (split_critical_edges): Export.
    * tree-ssa-sink.c (execute_sink_code): Split critical edges.

    * gcc.dg/torture/pr59715.c: New testcase.

Modified:
    branches/gcc-4_7-branch/gcc/tree-flow.h