[Bug target/48344] New: powerpc ICE error: unrecognizable insn

["raj.khem at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48344

           Summary: powerpc ICE error: unrecognizable insn
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: raj.khem@gmail.com


when compiling following testcase

void foo ()
{
    int N = 2;
    int slots[N];

}

with -fstack-limit-register=r2 for ppc32 gcc ICEs


$ powerpc-linux-uclibc-gcc-4.6.0 -fstack-limit-register=r2 a.c
a.c: In function âfooâ:
a.c:6:1: error: unrecognizable insn:
(insn 35 34 36 3 (set (reg:SI 144)
        (reg 2 2)) a.c:4 -1
     (nil))
a.c:6:1: internal compiler error: in extract_insn, at recog.c:2109
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


Here is how I configured gcc

Using built-in specs.
COLLECT_GCC=powerpc-linux-uclibc-gcc-4.6.0
COLLECT_LTO_WRAPPER=/home/kraj/work/cross/powerpc-linux-uclibc/tools/libexec/gcc/powerpc-linux-uclibc/4.6.0/lto-wrapper
Target: powerpc-linux-uclibc
Configured with:
/home/kraj/work/cross/powerpc-linux-uclibc/../../gcc.git/configure
--target=powerpc-linux-uclibc
--prefix=/home/kraj/work/cross/powerpc-linux-uclibc/tools
--with-sysroot=/home/kraj/work/cross/powerpc-linux-uclibc/sysroot
--enable-__cxa_atexit --disable-libssp --disable-libgomp --disable-libmudflap
--enable-languages=c,c++ --disable-multilib