[Bug c/52773] New: internal error: in replace_pseudos_in, at reload1.c:577

["fdarkangel at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52773

             Bug #: 52773
           Summary: internal error: in replace_pseudos_in, at
                    reload1.c:577
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: fdarkangel@gmail.com


Created attachment 27035
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27035
An excerpt from SGDK v0.90 that demonstrates the bug

Using m68k-elf-gcc 4.7.0 with
m68k-elf-gcc -c -m68000 -Wall -O2 -funroll-loops -fomit-frame-pointer
-fno-builtin-memset -fno-builtin-memcpy bug.c

The problem disappears without -funroll-loops parameter (or -O0).
I was able to compile the code on my host machine (x86_64, gcc 4.6.3) without
any problems.

More details on the cross compiler:
m68k-elf-gcc -v
Using built-in specs.
COLLECT_GCC=m68k-elf-gcc
COLLECT_LTO_WRAPPER=/opt/toolchains/sega/m68k-elf/libexec/gcc/m68k-elf/4.7.0/lto-wrapper
Target: m68k-elf
Configured with: ../gcc-4.7.0/configure --target=m68k-elf
--prefix=/opt/toolchains/sega/m68k-elf --without-headers --with-newlib
--enable-languages=c --disable-libssp --disable-tls --with-cpu=m68000
--disable-werror : (reconfigured) ../gcc-4.7.0/configure --target=m68k-elf
--prefix=/opt/toolchains/sega/m68k-elf --with-newlib --disable-libssp
--disable-tls --enable-threads=single --enable-languages=c,c++,objc,obj-c++
--with-cpu=m68000 --disable-werror
Thread model: single
gcc version 4.7.0 (GCC)