[Bug rtl-optimization/46829] ICE: in spill_failure, at reload1.c:2105 with -fschedule-insns -fsched-pressure and variadic function

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46829

--- Comment #6 from Zdenek Sojka <zsojka at seznam dot cz> 2010-12-07 17:34:01 
UTC ---
Created attachment 22674
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22674
different testcase

A bit different testcase

$ gcc -O -fschedule-insns -fsched-pressure pr46829-2.c 
pr46829-2.c: In function 'foo':
pr46829-2.c:10:1: error: unable to find a register to spill in class 'AREG'
pr46829-2.c:10:1: error: this is the insn:
(insn 8 13 9 2 (parallel [
            (set (reg:SI 37 r8)
                (div:SI (reg:SI 2 cx [orig:59 b.0 ] [59])
                    (reg:SI 38 r9 [orig:60 a.1 ] [60])))
            (set (reg:SI 1 dx [66])
                (mod:SI (reg:SI 2 cx [orig:59 b.0 ] [59])
                    (reg:SI 38 r9 [orig:60 a.1 ] [60])))
            (clobber (reg:CC 17 flags))
        ]) pr46829-2.c:8 353 {*divmodsi4}
     (expr_list:REG_UNUSED (reg:SI 1 dx [66])
        (expr_list:REG_UNUSED (reg:CC 17 flags)
            (nil))))
pr46829-2.c:10:1: internal compiler error: in spill_failure, at reload1.c:2105
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