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From: "ibethune at epcc dot ed.ac.uk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/50774] New: Internal Compiler Error when march=bdver1
Date: Tue, 18 Oct 2011 09:52:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50774

             Bug #: 50774
           Summary: Internal Compiler Error when march=bdver1
    Classification: Unclassified
           Product: gcc
           Version: 4.6.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ibethune@epcc.ed.ac.uk


Created attachment 25539
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25539
Source file which triggers the ICE

In the attached simple code, compilation fails when using the -march=bdver1
flag:


ibethune@login3:~/gcc46_test> gfortran -c -O3 -ffast-math -g -march=bdver1 
helium_interactions.f90
gfortran: internal compiler error: Segmentation fault (program f951)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


Without the -march file compilation completes successfully.

Gfortran version infromation below:

ibethune@login3:~/gcc46_test> gfortran -v
Using built-in specs.
COLLECT_GCC=/opt/gcc/4.6.1/bin/../snos/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/gcc/4.6.1/snos/libexec/gcc/x86_64-suse-linux/4.6.1/lto-wrapper
Target: x86_64-suse-linux
Configured with: ../xt-gcc-4.6.1/configure --prefix=/opt/gcc/4.6.1/snos
--disable-nls --libdir=/opt/gcc/4.6.1/snos/lib --enable-languages=c,c++,fortran
--with-gxx-include-dir=/opt/gcc/4.6.1/snos/include/g++
--with-slibdir=/opt/gcc/4.6.1/snos/lib --with-system-zlib --enable-shared
--enable-__cxa_atexit x86_64-suse-linux --with-mpc=/opt/gcc/mpc/0.8.1
--with-mpfr=/opt/gcc/mpfr/2.4.2 --with-gmp=/opt/gcc/gmp/4.3.2 --with-sysroot=
Thread model: posix
gcc version 4.6.1 20110627 (Cray Inc.) (GCC)

Cheers

- Iain