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Date: Mon, 03 Apr 2006 11:20:00 -0000
Subject: [Bug middle-end/27001]  New: ICE with -fschedule-insns -fstack-protector-all
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The following code snippet causes an ICE on x86_64-unknown-linux-gnu
when compiled with "-fschedule-insns -fstack-protector-all".
This happens since 4.1.0 when -fstack-protector-all was introduced.

=========================================================================
int foo(int i)
{
    i /= i+1;
    return 0;
}
=========================================================================

bug.c: In function 'foo':
bug.c:5: error: unable to find a register to spill in class 'AREG'
bug.c:5: error: this is the insn:
(insn 11 21 27 2 (parallel [
            (set (reg:SI 1 dx [61])
                (div:SI (reg:SI 1 dx [orig:63 i ] [63])
                    (reg:SI 2 cx [orig:59 D.1879 ] [59])))
            (set (reg:SI 2 cx [62])
                (mod:SI (reg:SI 1 dx [orig:63 i ] [63])
                    (reg:SI 2 cx [orig:59 D.1879 ] [59])))
            (clobber (reg:CC 17 flags))
        ]) 277 {*divmodsi4_nocltd} (nil)
    (expr_list:REG_DEAD (reg:SI 1 dx [orig:63 i ] [63])
        (expr_list:REG_DEAD (reg:SI 2 cx [orig:59 D.1879 ] [59])
            (expr_list:REG_UNUSED (reg:CC 17 flags)
                (expr_list:REG_UNUSED (reg:SI 2 cx [62])
                    (nil))))))
bug.c:5: internal compiler error: in spill_failure, at reload1.c:1912
Please submit a full bug report, [etc.]


-- 
           Summary: ICE with -fschedule-insns -fstack-protector-all
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, monitored
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27001