http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58394

            Bug ID: 58394
           Summary: unrecognizable insn
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xperience at interia dot pl

When I try to compile firefox under gentoo I have following error:


/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/celt/rate.c:
In function 'compute_allocation':
/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/celt/rate.c:642:1:
error: unrecognizable insn:
 }
 ^
(insn 1411 1410 1412 195 (set (reg:V4SI 1247)
        (unspec:V4SI [
                (const_vector:V4SI [
                        (const_int 0 [0])
                        (const_int 0 [0])
                        (const_int 0 [0])
                        (const_int 0 [0])
                    ])
                (reg:V4SI 1243 [ vect_var_.67 ])
                (const_int 1 [0x1])
            ] UNSPEC_VCGE))
/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/celt/rate.c:525
-1
     (nil))
/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/celt/rate.c:642:1:
internal compiler error: in extract_insn, at recog.c:2150


full command line:
armv7a-hardfloat-linux-gnueabi-gcc -o rate.o -c -fvisibility=hidden
-DOPUS_BUILD -DOPUS_VERSION='"draft-11-mozilla"' -DUSE_ALLOCA -Drestrict= 
-DHAVE_LRINTF -DMOZ_GLUE_IN_PROGRAM
-I/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/include
-I/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/celt
-I/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/silk
-I/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/src

-I/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/silk/float
-I/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus
-I. -I../../dist/include  -I/usr/include/nspr -I/usr/include/nss      -fPIC 
-Wall -Wpointer-arith -Wdeclaration-after-statement -Werror=return-type
-Wtype-limits -Wempty-body -Wno-unused -Wno-overlength-strings -pipe
-fomit-frame-pointer -mtune=native -mcpu=native -mfpu=neon-vfpv4
-mfloat-abi=hard -fPIC -fno-strict-aliasing -ffunction-sections -fdata-sections
-pthread -pipe  -DNDEBUG -DTRIMMED -O3 -fomit-frame-pointer   -include
../../mozilla-config.h -DMOZILLA_CLIENT -MD -MF .deps/rate.o.pp
/var/tmp/portage/www-client/firefox-17.0.8/work/mozilla-esr17/media/libopus/celt/rate.c

It happends only when -O3 is used

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