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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/56916] New: ICE when building libgfortran for arm-none-eabi
Date: Thu, 11 Apr 2013 08:57:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56916

             Bug #: 56916
           Summary: ICE when building libgfortran for arm-none-eabi
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ktkachov@gcc.gnu.org
                CC: rguenther@suse.de
            Target: arm-none-eabi


With r197671 gcc ICEs while building libgfortran

$SOURCE/gcc/libgfortran/generated/matmul_i8.c: In function 'matmul_i8':
$SOURCE/gcc/libgfortran/generated/matmul_i8.c:374:1: internal compiler error:
Segmentation fault
 }
 ^
0x8f1a85 crash_signal
0x8a1c88 rtx_cost(rtx_def*, rtx_code, int, bool)
    $SOURCE/gcc/gcc/rtlanal.c:3805
0xd4220d set_src_cost
    $SOURCE/gcc/gcc/rtl.h:1368
0xd4220d doloop_optimize
    $SOURCE/gcc/gcc/loop-doloop.c:662
0xd4220d doloop_optimize_loops()
    $SOURCE/gcc/gcc/loop-doloop.c:764
0x7e3b37 rtl_doloop
    $SOURCE/gcc/gcc/loop-init.c:543
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.

Weirdly, when I execute the ICEing command on itself it ICEs, but when I add
-save-temps it doesn't and the resulting .i file compiles without error

$SOURCE/build/obj/gcc2/./gcc/xgcc -B$SOURCE/build/obj/gcc2/./gcc/
-B$SOURCE/build/install/arm-none-eabi/bin/
-B$SOURCE/build/install/arm-none-eabi/lib/ -isystem
$SOURCE/build/install/arm-none-eabi/include -isystem
$SOURCE/build/install/arm-none-eabi/sys-include -DHAVE_CONFIG_H -I.
-I$SOURCE/gcc/libgfortran -iquote$SOURCE/gcc/libgfortran/io
-I$SOURCE/gcc/libgfortran/../gcc -I$SOURCE/gcc/libgfortran/../gcc/config
-I../.././gcc -I$SOURCE/gcc/libgfortran/../libgcc -I../libgcc -std=gnu99 -Wall
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra
-Wwrite-strings -fcx-fortran-rules -ffunction-sections -fdata-sections
-ftree-vectorize -funroll-loops -O2 -g -MT matmul_i8.lo -MD -MP -MF
.deps/matmul_i8.Tpo -c $SOURCE/gcc/libgfortran/generated/matmul_i8.c -o
matmul_i8.o


Cross compiler configuration:
--with-fpu=neon-vfpv4 --with-float=hard --with-arch=armv7-a
--with-language=c,c++,fortran