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Re: patch to enable LRA for ppc


On Tue, Oct 22, 2013 at 10:21:32AM -0400, David Edelsohn wrote:
> On Mon, Oct 21, 2013 at 10:42 PM, Vladimir Makarov <vmakarov@redhat.com> wrote:
> 
> >> I would say lets add -mlra, but make the default OFF for the time being.
> >> We
> >> can always switch the default later.
> >
> > Sure, if you know some LRA problems it should not be on default. Moreover,
> > if we still have the problems when releasing gcc4.9, I think we should
> > exclude any possibility for a user to use LRA for ppc.  I don't want to have
> > GGC-4.9 users blaming LRA.
> >
> > But adding LRA to PPC on the trunk (switched OFF by default) earlier could
> > help me a lot to work on the issues.
> 
> My main concern was disrupting Mike. If Mike is comfortable with
> adding LRA disabled by default, it is okay with me.
> 
> The patch mostly adds lra_in_progress, which will not have any effect
> while LRA remains disabled.
> 
> My one question about the patch is:
> 
> -  [(set (match_operand:DI 0 "reg_or_mem_operand" "=&r,Z,??&r")
> +  [(set (match_operand:DI 0 "reg_or_mem_operand" "=&r,Z,&r")
> 
> which may cause register preferencing problems for bswap when LRA is not used.
> 
> The rest of the patch is okay.
> 
> Thanks, David

Yeah, I can see a whole round of tuning issues, and everywhere
reload_in_progress is used, add lra_in_progress.  Because of the Advance
Toolchain, RHEL, and SLES, we will need to still deal with the original
register allocator.

Vlad, this is part of a message I had sent David, and I thought you were on the
CC list about LRA.

I haven't looked in detail what the changes are at this point.  I did do some
builds and comparisons.  It looks like there are definately problems with
32-bit fortran and decimal floating point (and likely long double using IBM's
double double format).  If somebody has some cycles, it may be useful digging
into why we get these failures.

Note, I have some sort of configuration problem in running dealII, so it
isn't run right now:

Spec 2006, 64-bit, 3 runs, picking the middle, power7 options:

Benchmark                   Type    Percent
400.perlbench               int      96.74%
401.bzip2                   int     100.09%
403.gcc                     int      99.94%
429.mcf                     int      99.21%
445.gobmk                   int      99.33%
456.hmmer                   int      98.34%
458.sjeng                   int      99.68%
462.libquantum              int     101.48%
464.h264ref                 int     101.40%
471.omnetpp                 int     100.28%
473.astar                   int     100.09%
483.xalancbmk               int      98.28%
410.bwaves                  fp       98.11%
416.gamess                  fp      101.31%
433.milc                    fp       99.43%
434.zeusmp                  fp      103.53%
435.gromacs                 fp      109.63%
436.cactusADM               fp       99.53%
437.leslie3d                fp      101.23%
444.namd                    fp      103.42%
447.dealII                  fp      ------
450.soplex                  fp       99.14%
453.povray                  fp       99.66%
454.calculix                fp       97.17%
459.GemsFDTD                fp      100.88%
465.tonto                   fp      101.18%
470.lbm                     fp       99.83%
481.wrf                     fp       93.38%
482.sphinx3                 fp      100.82%
Spec INT                    int      99.57%
Spec FP except 447.dealII   fp      100.43%

Perlbench, calculix, and wrf are slower.  Zeusmp, gromacs, and Namd are
faster.

Unfortunately, the profiling tools on my system seem to abort when I run 32-bit
benchmarks, so I haven't gotten the numbers recently (nor had time to get the
tools team to look at it).

In terms of building 32-bit, 3 benchmarks don't build with LRA: gamess, dealII
(note in 64-bit dealII builds, it just doesn't run correctly), and wrf.

Lets see.  In gamess, I see:

/home/meissner/fsf-install-ppc64/gcc-4_9-lra/bin/gfortran -c -o ormas1.fppized.o -g -save-temps=obj -ffast-math -Ofast -mveclibabi=mass -mcpu=power7 -mrecip=rsqrt -fpeel-loops -funroll-loops -ftree-vectorize -fvect-cost-model -fno-aggressive-loop-optimizations -mlra -m32 ormas1.fppized.f
ormas1.fppized.f: In function 'maktabs':
ormas1.fppized.f:2281:0: internal compiler error: in check_rtl, at lra.c:2036
       END
 ^
0x105a08ef check_rtl
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2036
0x105a2bcb lra(_IO_FILE*)
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2432
0x10552933 do_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4686
0x10552933 rest_of_handle_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4815
0x10552933 execute
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4844
Please submit a full bug report,


In dealII we see:

/home/meissner/fsf-install-ppc64/gcc-4_9-lra/bin/g++ -c -o sparse_matrix_ez.float.o -DSPEC_CPU -DNDEBUG  -Iinclude -DBOOST_DISABLE_THREADS -Ddeal_II_dimension=3 -g -save-temps=obj -ffast-math -Ofast -mveclibabi=mass -mcpu=po
wer7 -mrecip=rsqrt -fpeel-loops -funroll-loops -ftree-vectorize -fvect-cost-model -fno-aggressive-loop-optimizations -mlra  -m32     -DSPEC_CPU_LINUX -include cstddef      sparse_matrix_ez.float.cc
quadrature_lib.cc: In constructor 'QGauss<dim>::QGauss(unsigned int) [with int dim = 1]':
quadrature_lib.cc:95:1: internal compiler error: in check_rtl, at lra.c:2036
 }
 ^
0x1073272f check_rtl
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2036
0x10734a0b lra(_IO_FILE*)
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2432
0x106e4773 do_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4686
0x106e4773 rest_of_handle_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4815
0x106e4773 execute
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4844
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.
specmake: *** [quadrature_lib.o] Error 1
specmake: *** Waiting for unfinished jobs....
polynomial.cc: In member function 'Polynomials::Polynomial<number> Polynomials::Polynomial<number>::derivative() const [with number = long double]':
polynomial.cc:282:3: internal compiler error: in check_rtl, at lra.c:2036
   }
   ^
0x1073272f check_rtl
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2036
0x10734a0b lra(_IO_FILE*)
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2432
0x106e4773 do_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4686
0x106e4773 rest_of_handle_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4815
0x106e4773 execute
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4844
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.
specmake: *** [polynomial.o] Error 1

In wrf, we get:
/home/meissner/fsf-install-ppc64/gcc-4_9-lra/bin/gfortran -c -o module_radiation_driver.fppized.o -I. -I./netcdf/include -g -save-temps=obj -ffast-math -Ofast -mveclibabi=mass -mcpu=power7 -mrecip=rsqrt -fpeel-loops -funroll
-loops -ftree-vectorize -fvect-cost-model -fno-aggressive-loop-optimizations -mlra -m32 module_radiation_driver.fppized.f90
module_diffusion_em.fppized.f90: In function 'cal_deform_and_div':
module_diffusion_em.fppized.f90:829:0: internal compiler error: in check_rtl, at lra.c:2036
     END SUBROUTINE cal_deform_and_div
 ^
0x105a08ef check_rtl
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2036
0x105a2bcb lra(_IO_FILE*)
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/lra.c:2432
0x10552933 do_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4686
0x10552933 rest_of_handle_reload
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4815
0x10552933 execute
        /home/meissner/fsf-src/gcc-4_9-lra/gcc/ira.c:4844
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.
specmake: *** [module_diffusion_em.fppized.o] Error 1
specmake: *** Waiting for unfinished jobs....
Error with make 'specmake -j40 build': check file '/home/meissner/spec-build/spec-2006-base-dev49-power7-vsx-svn203459-lra-shared-at7.0-32bit/benchspec/CPU2006/481.wrf/build/build_base_dev49-power7-vsx-32bit.0000/make.err'
  Command returned exit code 2
  Error with make!
*** Error building 481.wrf

I checked the LRA changes into a branch, and it is based off of subversion id
203569.
svn+ssh://gcc.gnu.org/svn/gcc/branches/ibm/gcc-4_9-lra

Lets see, in terms of make check regressions:

Unexpected tests for gcc -m64:

Test                                            | gcc-4 #1 | trunk #2
=============================================== | ======== | ========
gcc.target/powerpc/p8vector-ldst.c              | fail     | ---
gcc.target/powerpc/pr57744.c                    | fail     | ---

Unexpected tests for gcc -m32:

Test                                            | gcc-4 #1 | trunk #2
=============================================== | ======== | ========
c-c++-common/dfp/cast.c                         | fail     | ---
c-c++-common/dfp/convert-bfp-10.c               | fail     | ---
c-c++-common/dfp/convert-bfp-11.c               | fail     | ---
c-c++-common/dfp/convert-bfp-2.c                | fail     | ---
c-c++-common/dfp/convert-bfp-3.c                | fail     | ---
c-c++-common/dfp/convert-bfp-4.c                | fail     | ---
c-c++-common/dfp/convert-bfp-5.c                | fail     | ---
c-c++-common/dfp/convert-bfp-6.c                | fail     | ---
c-c++-common/dfp/convert-bfp-7.c                | fail     | ---
c-c++-common/dfp/convert-bfp.c                  | fail     | ---
c-c++-common/dfp/inf-1.c                        | fail     | ---
gcc.target/powerpc/bswap64-4.c                  | fail     | ---
gcc.target/powerpc/p8vector-ldst.c              | fail     | ---
gcc.target/powerpc/pr53199.c                    | fail     | ---

Unexpected tests for g++ -m32:

Test                              | gcc-4 #1 | trunk #2
================================= | ======== | ========
c-c++-common/dfp/cast.c           | fail     | ---
c-c++-common/dfp/convert-bfp-10.c | fail     | ---
c-c++-common/dfp/convert-bfp-11.c | fail     | ---
c-c++-common/dfp/convert-bfp-2.c  | fail     | ---
c-c++-common/dfp/convert-bfp-3.c  | fail     | ---
c-c++-common/dfp/convert-bfp-4.c  | fail     | ---
c-c++-common/dfp/convert-bfp-5.c  | fail     | ---
c-c++-common/dfp/convert-bfp-6.c  | fail     | ---
c-c++-common/dfp/convert-bfp-7.c  | fail     | ---
c-c++-common/dfp/convert-bfp.c    | fail     | ---
c-c++-common/dfp/inf-1.c          | fail     | ---

Unexpected tests for gfortran -m32:

Test                                                        | gcc-4 #1 | trunk #2
=========================================================== | ======== | ========
gfortran.dg/PR19872.f                                       | fail     | ---
gfortran.dg/advance_1.f90                                   | fail     | ---
gfortran.dg/advance_4.f90                                   | fail     | ---
gfortran.dg/advance_5.f90                                   | fail     | ---
gfortran.dg/advance_6.f90                                   | fail     | ---
gfortran.dg/append_1.f90                                    | fail     | ---
gfortran.dg/associated_2.f90                                | fail     | ---
gfortran.dg/assumed_rank_1.f90                              | fail     | ---
gfortran.dg/assumed_rank_2.f90                              | fail     | ---
gfortran.dg/assumed_rank_7.f90                              | fail     | ---
gfortran.dg/assumed_type_2.f90                              | fail     | ---
gfortran.dg/backspace_10.f90                                | fail     | ---
gfortran.dg/backspace_2.f                                   | fail     | ---
gfortran.dg/backspace_8.f                                   | fail     | ---
gfortran.dg/backspace_9.f                                   | fail     | ---
gfortran.dg/bound_2.f90                                     | fail     | ---
gfortran.dg/bound_7.f90                                     | fail     | ---
gfortran.dg/char_cshift_1.f90                               | fail     | ---
gfortran.dg/char_cshift_2.f90                               | fail     | ---
gfortran.dg/char_cshift_3.f90                               | fail     | ---
gfortran.dg/char_eoshift_1.f90                              | fail     | ---
gfortran.dg/char_eoshift_2.f90                              | fail     | ---
gfortran.dg/char_eoshift_3.f90                              | fail     | ---
gfortran.dg/char_eoshift_4.f90                              | fail     | ---
gfortran.dg/char_eoshift_5.f90                              | fail     | ---
gfortran.dg/char_length_8.f90                               | fail     | ---
gfortran.dg/chmod_1.f90                                     | fail     | ---
gfortran.dg/chmod_2.f90                                     | fail     | ---
gfortran.dg/chmod_3.f90                                     | fail     | ---
gfortran.dg/comma.f                                         | fail     | ---
gfortran.dg/convert_2.f90                                   | fail     | ---
gfortran.dg/convert_implied_open.f90                        | fail     | ---
gfortran.dg/cr_lf.f90                                       | fail     | ---
gfortran.dg/cshift_bounds_1.f90                             | fail     | ---
gfortran.dg/cshift_bounds_2.f90                             | fail     | ---
gfortran.dg/cshift_bounds_3.f90                             | fail     | ---
gfortran.dg/cshift_bounds_4.f90                             | fail     | ---
gfortran.dg/cshift_nan_1.f90                                | fail     | ---
gfortran.dg/defined_assignment_9.f90                        | fail     | ---
gfortran.dg/dev_null.F90                                    | fail     | ---
gfortran.dg/direct_io_1.f90                                 | fail     | ---
gfortran.dg/direct_io_11.f90                                | fail     | ---
gfortran.dg/direct_io_12.f90                                | fail     | ---
gfortran.dg/direct_io_2.f90                                 | fail     | ---
gfortran.dg/direct_io_3.f90                                 | fail     | ---
gfortran.dg/direct_io_5.f90                                 | fail     | ---
gfortran.dg/direct_io_8.f90                                 | fail     | ---
gfortran.dg/endfile.f90                                     | fail     | ---
gfortran.dg/endfile_2.f90                                   | fail     | ---
gfortran.dg/eof_4.f90                                       | fail     | ---
gfortran.dg/eoshift.f90                                     | fail     | ---
gfortran.dg/eoshift_bounds_1.f90                            | fail     | ---
gfortran.dg/error_format.f90                                | fail     | ---
gfortran.dg/f2003_inquire_1.f03                             | fail     | ---
gfortran.dg/f2003_io_1.f03                                  | fail     | ---
gfortran.dg/f2003_io_5.f03                                  | fail     | ---
gfortran.dg/f2003_io_7.f03                                  | fail     | ---
gfortran.dg/fmt_cache_1.f                                   | fail     | ---
gfortran.dg/fmt_error_4.f90                                 | fail     | ---
gfortran.dg/fmt_error_5.f90                                 | fail     | ---
gfortran.dg/fmt_t_5.f90                                     | fail     | ---
gfortran.dg/fmt_t_7.f                                       | fail     | ---
gfortran.dg/ftell_3.f90                                     | fail     | ---
gfortran.dg/hollerith4.f90                                  | fail     | ---
gfortran.dg/inquire_10.f90                                  | fail     | ---
gfortran.dg/inquire_13.f90                                  | fail     | ---
gfortran.dg/inquire_15.f90                                  | fail     | ---
gfortran.dg/inquire_9.f90                                   | fail     | ---
gfortran.dg/inquire_size.f90                                | fail     | ---
gfortran.dg/iomsg_1.f90                                     | fail     | ---
gfortran.dg/iostat_2.f90                                    | fail     | ---
gfortran.dg/list_read_10.f90                                | fail     | ---
gfortran.dg/list_read_11.f90                                | fail     | ---
gfortran.dg/list_read_6.f90                                 | fail     | ---
gfortran.dg/list_read_7.f90                                 | fail     | ---
gfortran.dg/list_read_9.f90                                 | fail     | ---
gfortran.dg/matmul_1.f90                                    | fail     | ---
gfortran.dg/matmul_5.f90                                    | fail     | ---
gfortran.dg/maxloc_bounds_1.f90                             | fail     | ---
gfortran.dg/maxloc_bounds_2.f90                             | fail     | ---
gfortran.dg/maxloc_bounds_3.f90                             | fail     | ---
gfortran.dg/maxloc_bounds_6.f90                             | fail     | ---
gfortran.dg/maxloc_bounds_8.f90                             | fail     | ---
gfortran.dg/namelist_44.f90                                 | fail     | ---
gfortran.dg/namelist_45.f90                                 | fail     | ---
gfortran.dg/namelist_46.f90                                 | fail     | ---
gfortran.dg/namelist_66.f90                                 | fail     | ---
gfortran.dg/namelist_72.f                                   | fail     | ---
gfortran.dg/namelist_82.f90                                 | fail     | ---
gfortran.dg/negative_automatic_size.f90                     | fail     | ---
gfortran.dg/negative_unit.f                                 | fail     | ---
gfortran.dg/negative_unit_int8.f                            | fail     | ---
gfortran.dg/newunit_1.f90                                   | fail     | ---
gfortran.dg/newunit_3.f90                                   | fail     | ---
gfortran.dg/open_access_append_1.f90                        | fail     | ---
gfortran.dg/open_errors.f90                                 | fail     | ---
gfortran.dg/open_negative_unit_1.f90                        | fail     | ---
gfortran.dg/open_new.f90                                    | fail     | ---
gfortran.dg/open_readonly_1.f90                             | fail     | ---
gfortran.dg/open_status_1.f90                               | fail     | ---
gfortran.dg/open_status_2.f90                               | fail     | ---
gfortran.dg/open_status_3.f90                               | fail     | ---
gfortran.dg/optional_dim_2.f90                              | fail     | ---
gfortran.dg/optional_dim_3.f90                              | fail     | ---
gfortran.dg/overwrite_1.f                                   | fail     | ---
gfortran.dg/pointer_assign_8.f90                            | fail     | ---
gfortran.dg/pr16597.f90                                     | fail     | ---
gfortran.dg/pr16935.f90                                     | fail     | ---
gfortran.dg/pr20954.f                                       | fail     | ---
gfortran.dg/pr39865.f90                                     | fail     | ---
gfortran.dg/pr46804.f90                                     | fail     | ---
gfortran.dg/pr47878.f90                                     | fail     | ---
gfortran.dg/read_comma.f                                    | fail     | ---
gfortran.dg/read_eof_4.f90                                  | fail     | ---
gfortran.dg/read_eof_8.f90                                  | fail     | ---
gfortran.dg/read_eof_all.f90                                | fail     | ---
gfortran.dg/read_list_eof_1.f90                             | fail     | ---
gfortran.dg/read_many_1.f                                   | fail     | ---
gfortran.dg/read_no_eor.f90                                 | fail     | ---
gfortran.dg/readwrite_unf_direct_eor_1.f90                  | fail     | ---
gfortran.dg/realloc_on_assign_11.f90                        | fail     | ---
gfortran.dg/realloc_on_assign_7.f03                         | fail     | ---
gfortran.dg/record_marker_1.f90                             | fail     | ---
gfortran.dg/record_marker_3.f90                             | fail     | ---
gfortran.dg/runtime_warning_1.f90                           | fail     | ---
gfortran.dg/selected_char_kind_1.f90                        | fail     | ---
gfortran.dg/selected_char_kind_4.f90                        | fail     | ---
gfortran.dg/shift-alloc.f90                                 | fail     | ---
gfortran.dg/shift-kind_2.f90                                | fail     | ---
gfortran.dg/stat_1.f90                                      | fail     | ---
gfortran.dg/stat_2.f90                                      | fail     | ---
gfortran.dg/streamio_1.f90                                  | fail     | ---
gfortran.dg/streamio_10.f90                                 | fail     | ---
gfortran.dg/streamio_12.f90                                 | fail     | ---
gfortran.dg/streamio_14.f90                                 | fail     | ---
gfortran.dg/streamio_15.f90                                 | fail     | ---
gfortran.dg/streamio_16.f90                                 | fail     | ---
gfortran.dg/streamio_2.f90                                  | fail     | ---
gfortran.dg/streamio_3.f90                                  | fail     | ---
gfortran.dg/streamio_4.f90                                  | fail     | ---
gfortran.dg/streamio_5.f90                                  | fail     | ---
gfortran.dg/streamio_6.f90                                  | fail     | ---
gfortran.dg/streamio_7.f90                                  | fail     | ---
gfortran.dg/streamio_8.f90                                  | fail     | ---
gfortran.dg/streamio_9.f90                                  | fail     | ---
gfortran.dg/tl_editing.f90                                  | fail     | ---
gfortran.dg/unf_io_convert_1.f90                            | fail     | ---
gfortran.dg/unf_io_convert_2.f90                            | fail     | ---
gfortran.dg/unf_io_convert_3.f90                            | fail     | ---
gfortran.dg/unf_io_convert_4.f90                            | fail     | ---
gfortran.dg/unf_read_corrupted_1.f90                        | fail     | ---
gfortran.dg/unf_short_record_1.f90                          | fail     | ---
gfortran.dg/unformatted_subrecord_1.f90                     | fail     | ---
gfortran.dg/unpack_bounds_1.f90                             | fail     | ---
gfortran.dg/unpack_bounds_2.f90                             | fail     | ---
gfortran.dg/unpack_bounds_3.f90                             | fail     | ---
gfortran.dg/widechar_intrinsics_10.f90                      | fail     | ---
gfortran.dg/widechar_intrinsics_5.f90                       | fail     | ---
gfortran.dg/write_back.f                                    | fail     | ---
gfortran.dg/write_check.f90                                 | fail     | ---
gfortran.dg/write_check3.f90                                | fail     | ---
gfortran.dg/write_direct_eor.f90                            | fail     | ---
gfortran.dg/write_rewind_1.f                                | fail     | ---
gfortran.dg/write_rewind_2.f                                | fail     | ---
gfortran.dg/write_to_null.F90                               | fail     | ---
gfortran.dg/x_slash_2.f                                     | fail     | ---
gfortran.dg/zero_sized_1.f90                                | fail     | ---
gfortran.fortran-torture/execute/backspace.f90              | fail     | ---
gfortran.fortran-torture/execute/direct_io.f90              | fail     | ---
gfortran.fortran-torture/execute/inquire_1.f90              | fail     | ---
gfortran.fortran-torture/execute/inquire_2.f90              | fail     | ---
gfortran.fortran-torture/execute/inquire_3.f90              | fail     | ---
gfortran.fortran-torture/execute/inquire_4.f90              | fail     | ---
gfortran.fortran-torture/execute/inquire_5.f90              | fail     | ---
gfortran.fortran-torture/execute/intrinsic_associated.f90   | fail     | ---
gfortran.fortran-torture/execute/intrinsic_associated_2.f90 | fail     | ---
gfortran.fortran-torture/execute/intrinsic_cshift.f90       | fail     | ---
gfortran.fortran-torture/execute/intrinsic_eoshift.f90      | fail     | ---
gfortran.fortran-torture/execute/intrinsic_size.f90         | fail     | ---
gfortran.fortran-torture/execute/list_read_1.f90            | fail     | ---
gfortran.fortran-torture/execute/open_replace.f90           | fail     | ---
gfortran.fortran-torture/execute/seq_io.f90                 | fail     | ---
gfortran.fortran-torture/execute/slash_edit.f90             | fail     | ---
gfortran.fortran-torture/execute/unopened_unit_1.f90        | fail     | ---


-- 
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460, USA
email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797


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