[Bug regression/51996] New: ICE in extract_insn gcc.dg/pr48335-5.c

[Greta.Yorsh at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51996

             Bug #: 51996
           Summary: ICE in extract_insn gcc.dg/pr48335-5.c
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: greta.yo...@arm.com
                CC: rguent...@suse.de
            Target: arm-none-eabi


./xgcc -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=softfp
-B/work/bisect/build-systest-183470/gcc -O2 -fno-tree-sra -DSTACK_SIZE=16384
/work/local-checkouts/gcc-fsf/gcc/testsuite/gcc.dg/pr48335-5.c -S -o
/work/tmp/pr48335-5.s
/work/local-checkouts/gcc-fsf/gcc/testsuite/gcc.dg/pr48335-5.c: In function
'f1':
/work/local-checkouts/gcc-fsf/gcc/testsuite/gcc.dg/pr48335-5.c:17:1: error:
unrecognizable insn:
(insn 11 10 12 3 (set (reg:DI 141)
        (unspec:DI [
                (mem/s/c:DI (plus:SI (reg/f:SI 129 virtual-stack-vars)
                        (const_int -8 [0xfffffffffffffff8])) [2 S8 A32])
            ] UNSPEC_MISALIGNED_ACCESS))
/work/local-checkouts/gcc-fsf/gcc/testsuite/gcc.dg/pr48335-5.c:16 -1
     (nil))
/work/local-checkouts/gcc-fsf/gcc/testsuite/gcc.dg/pr48335-5.c:17:1: internal
compiler error: in extract_insn, at recog.c:2123

The failure introduced by r183470, described here:
http://gcc.gnu.org/ml/gcc-patches/2012-01/msg01138.html