[Bug c++/56883] New: error openmp parallel for order

[Bug c++/56883] New: error openmp parallel for order

[daffra.claudio at gmail dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56883

             Bug #: 56883
           Summary: error openmp parallel for order
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: daffra.claudio@gmail.com


Created attachment 29831
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29831
geeratated by compiler

claudio@mint ~/chtulu $ g++ -fopenmp master.cpp -o master
master.cpp: In function ‘<built-in>’:
master.cpp:179:17: internal compiler error: in expand_gimple_stmt_1, at
cfgexpand.c:2163
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.7/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccEQsp0b.out file, please attach this to
your bugreport.


ERROR 

template<class T>
void DimVector ( Vector4d(T) &dc, int x,int y,int z,int w )
{
    register int i,j,k;
    dc.resize(x);
    #pragma omp parallel for ordered shared(i,j,k)
    for ( i = 0; i < x; ++i) 
    {

        dc[i].resize(y);
    #pragma omp parallel for ordered shared(i,j,k)
        for ( j = 0; j < y; ++j) 
        {
            dc[i][j].resize(z);
        #pragma omp parallel for ordered shared(i,j,k)
            for (  k = 0; k < z; ++k) 
            {
                dc[i][j][k].resize(w);
            }
        }
    }
}
>From gcc-bugs-return-419543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Apr 08 21:26:55 2013
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Subject: [Bug target/56866] gcc 4.7.x/gcc-4.8.x with '-O3 -march½ver2' misscompiles glibc-2.17/crypt/sha512.c
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idV866

--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2013-04-08 21:26:51 UTC ---
> Created attachment 29820 [details]
> tar-file with small set of c-files to reproduce the problem

I can't recreate the problem with your script (to compile successfully, I
removed -static from the command). All binaries were executed without problems
on corei7, with provided -march and -O2 flags. The binaries were linked with
glibc-2.16, though.

Please follow the instructions at [1] to provide a *minimized* runtime testcase
that exposes the failure, without dependencies on system libc.

BTW: From your report it is not clear if the problem is indeed in the compiler,
or in the system glibc.

[1] http://gcc.gnu.org/bugs/

[Bug c++/56883] error openmp parallel for order

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56883

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-04-09
                 CC|                            |mpolacek at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-04-09 07:44:52 UTC ---
Confirmed.  With trunk:

master.cpp: In function ‘<built-in>’:
master.cpp:208:1: error: non-register as LHS of unary operation
j = (int) .istart0.214_7;
master.cpp:208:1: error: non-register as LHS of binary operation
j = j.216_24 + 1;
master.cpp:208:1: error: invalid operands in gimple comparison
if (j < _9)
master.cpp:208:1: internal compiler error: verify_gimple failed
0xc81dcc verify_gimple_in_cfg(function*)
    /home/marek/src/gcc/gcc/tree-cfg.c:4769
0xb64e21 execute_function_todo
    /home/marek/src/gcc/gcc/passes.c:1963
0xb64179 do_per_function
    /home/marek/src/gcc/gcc/passes.c:1701
0xb64f45 execute_todo
    /home/marek/src/gcc/gcc/passes.c:1996
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.
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From: "mikpe at it dot uu.se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/56888] memcpy implementation optimized as a call to memcpy
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idV888

Mikael Pettersson <mikpe at it dot uu.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikpe at it dot uu.se

--- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> 2013-04-09 07:52:07 UTC ---
I can reproduce the problem on x86-64 Linux with 4.8-20130404.  This issue
would be fatal for one of my projects which includes an embedded libc.

[Bug c++/56883] error openmp parallel for order

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56883

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-09 08:25:17 UTC ---
This testcase is invalid OpenMP, the loop iteration variables are predetermined
private and thus can't be specified in shared clause.
That said,
void
foo (int ***x)
{
  int i, j, k;
#pragma omp parallel for
  for (i = 0; i < 10; ++i)
    {
    #pragma omp parallel shared(j)
      #pragma omp for
        for (j = 0; j < 10; ++j)
          {
          #pragma omp parallel for
            for (k = 0; k < 10; ++k)
              x[i][j][k] = k;
          }
    }
}
is valid and still ICEs.  Will have a look.

[Bug middle-end/56883] error openmp parallel for order

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56883

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-09 09:25:20 UTC ---
Created attachment 29839
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29839
gcc49-pr56883.patch

Untested fix.

[Bug middle-end/56883] error openmp parallel for order

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56883

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-10 06:53:47 UTC ---
Author: jakub
Date: Wed Apr 10 06:35:48 2013
New Revision: 197661

URL: http://gcc.gnu.org/viewcvs?rev=197661&root=gcc&view=rev
Log:
    Backported from mainline
    2013-04-09  Jakub Jelinek  <jakub@redhat.com>

    PR middle-end/56883
    * omp-low.c (expand_omp_for_generic, expand_omp_for_static_nochunk,
    expand_omp_for_static_chunk): Use simple_p = true in
    force_gimple_operand_gsi calls when assigning to addressable decls.

    * c-c++-common/gomp/pr56883.c: New test.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/c-c++-common/gomp/pr56883.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/omp-low.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog

[Bug middle-end/56883] error openmp parallel for order

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56883

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED
   Target Milestone|---                         |4.8.1

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed so closing.