[Bug middle-end/31753] New: ICE while compiling qemu 0.9.0 with -O1 or higher

[bero at arklinux dot org]

$gcc -Wall -O1 -g -fno-strict-aliasing -mpreferred-stack-boundary=2
-fomit-frame-pointer -falign-functions=0 -fno-gcse -fno-reorder-blocks
-fno-optimize-sibling-calls  -I. -I..
-I/usr/src/ark/BUILD/qemu-0.9.0/target-i386 -I/usr/src/ark/BUILD/qemu-0.9.0
-I/usr/src/ark/BUILD/qemu-0.9.0/linux-user
-I/usr/src/ark/BUILD/qemu-0.9.0/linux-user/i386 -D_GNU_SOURCE
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I/usr/src/ark/BUILD/qemu-0.9.0/fpu
-DHAS_AUDIO -I/usr/src/ark/BUILD/qemu-0.9.0/slirp -c -o op.o
/usr/src/ark/BUILD/qemu-0.9.0/target-i386/op.c
/usr/src/ark/BUILD/qemu-0.9.0/target-i386/ops_sse.h: In function
'op_pshufw_mmx':
/usr/src/ark/BUILD/qemu-0.9.0/target-i386/ops_sse.h:593: error: unable to find
a register to spill in class 'GENERAL_REGS'
/usr/src/ark/BUILD/qemu-0.9.0/target-i386/ops_sse.h:593: error: this is the
insn:
(insn 16 15 17 2 /usr/src/ark/BUILD/qemu-0.9.0/target-i386/ops_sse.h:588 (set
(strict_low_part (subreg:HI (reg/v:DI 63 [ r ]) 0))
        (mem/s/j:HI (plus:SI (mult:SI (reg:SI 64)
                    (const_int 2 [0x2]))
                (reg/v/f:SI 59 [ s ])) [0 <variable>._w S2 A16])) 40
{*movstricthi_1} (insn_list:REG_DEP_TRUE 52 (insn_list:REG_DEP_TRUE 11
(insn_list:REG_DEP_TRUE 15 (nil))))
    (expr_list:REG_DEAD (reg:SI 64)
        (nil)))
/usr/src/ark/BUILD/qemu-0.9.0/target-i386/ops_sse.h:593: confused by earlier
errors, bailing out


The same code compiles ok with -O0


-- 
           Summary: ICE while compiling qemu 0.9.0 with -O1 or higher
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bero at arklinux dot org
 GCC build triplet: i586-pc-linux-gnu
  GCC host triplet: i586-pc-linux-gnu
GCC target triplet: i586-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31753