[Bug middle-end/56916] New: ICE when building libgfortran for arm-none-eabi

[ktkachov at gcc dot gnu.org]

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: unassig...@gcc.gnu.org

        ReportedBy: ktkac...@gcc.gnu.org

                CC: rguent...@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