[Bug bootstrap/45134] [4.6 Regression] Bootstrap failure for powerpc-*-*: ICE: in delete_corresponding_reg_eq_notes, at dce.c:495

["bergner at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #5 from bergner at gcc dot gnu dot org  2010-07-29 19:37 -------
Debugger info:

#0  fancy_abort (file=0x112a7098
"/home/bergner/gcc/gcc-mainline-base/gcc/dce.c", line=495, 
    function=0x112a7180 "delete_corresponding_reg_eq_notes") at
/home/bergner/gcc/gcc-mainline-base/gcc/diagnostic.c:879
#1  0x0000000010e5ad5c in delete_corresponding_reg_eq_notes
(insn=0xfffb1d4c840) at /home/bergner/gcc/gcc-mainline-base/gcc/dce.c:495
#2  0x0000000010e5af24 in delete_unmarked_insns () at
/home/bergner/gcc/gcc-mainline-base/gcc/dce.c:549
#3  0x0000000010e5cd04 in fast_dce (word_level=1 '\001') at
/home/bergner/gcc/gcc-mainline-base/gcc/dce.c:1003
#4  0x0000000010e5cf6c in run_word_dce () at
/home/bergner/gcc/gcc-mainline-base/gcc/dce.c:1031
#5  0x0000000010ec41f8 in decompose_multiword_subregs () at
/home/bergner/gcc/gcc-mainline-base/gcc/lower-subreg.c:1096
#6  0x0000000010ec5750 in rest_of_handle_lower_subreg2 () at
/home/bergner/gcc/gcc-mainline-base/gcc/lower-subreg.c:1349
#7  0x0000000010620104 in execute_one_pass (pass=0x1132a090) at
/home/bergner/gcc/gcc-mainline-base/gcc/passes.c:1564
#8  0x000000001062074c in execute_pass_list (pass=0x1132a090) at
/home/bergner/gcc/gcc-mainline-base/gcc/passes.c:1619
#9  0x0000000010620778 in execute_pass_list (pass=0x11321868) at
/home/bergner/gcc/gcc-mainline-base/gcc/passes.c:1620
#10 0x00000000108358d8 in tree_rest_of_compilation (fndecl=0xfffb5cad400) at
/home/bergner/gcc/gcc-mainline-base/gcc/tree-optimize.c:452
#11 0x0000000010b65b5c in cgraph_expand_function (node=0xfffb5cbb160) at
/home/bergner/gcc/gcc-mainline-base/gcc/cgraphunit.c:1643
#12 0x0000000010b65eec in cgraph_expand_all_functions () at
/home/bergner/gcc/gcc-mainline-base/gcc/cgraphunit.c:1722
#13 0x0000000010b668b8 in cgraph_optimize () at
/home/bergner/gcc/gcc-mainline-base/gcc/cgraphunit.c:1978
#14 0x0000000010b63618 in cgraph_finalize_compilation_unit () at
/home/bergner/gcc/gcc-mainline-base/gcc/cgraphunit.c:1185
#15 0x00000000100c4260 in c_write_global_declarations () at
/home/bergner/gcc/gcc-mainline-base/gcc/c-decl.c:9698
#16 0x0000000010778eb0 in compile_file () at
/home/bergner/gcc/gcc-mainline-base/gcc/toplev.c:957
#17 0x000000001077c778 in do_compile () at
/home/bergner/gcc/gcc-mainline-base/gcc/toplev.c:2295
#18 0x000000001077c8ac in toplev_main (argc=29, argv=0xfffffffef28) at
/home/bergner/gcc/gcc-mainline-base/gcc/toplev.c:2336
#19 0x00000000101c6650 in main (argc=29, argv=0xfffffffef28) at
/home/bergner/gcc/gcc-mainline-base/gcc/main.c:36

(gdb) pr insn
(insn 1826 1025 1026 117 (set (reg:DI 903 [+72 ])
        (reg:DI 903 [+72 ])) 378 {*movdi_internal64}
     (nil))

(gdb) p regno
$2 = 903

(gdb) pr noted_insn
(insn 1031 1028 1033 118 (parallel [
            (set (reg:DI 726)
                (and:DI (reg:DI 903 [+72 ])
                    (reg:DI 957)))
            (clobber (scratch:CC))
        ]) /home/bergner/gcc/gcc-mainline-base/gcc/fortran/module.c:3913 340
{anddi3_mc}
     (nil))


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45134