[Bug rtl-optimization/49007] ICE in extract_true_false_edges_from_block at tree-cfg.c:7379

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49007

--- Comment #15 from John David Anglin <danglin at gcc dot gnu.org> 2011-05-23 
16:18:41 UTC ---
Breakpoint 15, delete_related_insns (insn=0x1ba1390) at
../../gcc/gcc/jump.c:1126
1126      int was_code_label = (LABEL_P (insn));
(gdb) p debug_rtx (insn)
(code_label 322 386 91 16 617 "" [0 uses])
$65 = void
(gdb) p debug_rtx_list (insn, 5)
(code_label 322 386 91 16 617 "" [0 uses])

(note 91 322 433 [bb 16] NOTE_INSN_BASIC_BLOCK)

(insn 433 91 64 (use (insn/s 92 59 366 (set (reg/v:SI 4 %r4 [orig:111 i ]
[111])
                (const_int 2 [0x2])) 37 {*pa.md:2542} (expr_list:REG_EQUAL
(const_int 2 [0x2])
                (nil)))) -1 (nil))

(insn 64 433 465 ../../gcc/gcc/tree-cfgcleanup.c:697 (set (reg/f:SI 1 %r1
[216])
        (high:SI (symbol_ref:SI ("cfun") [flags 0x240] <var_decl 0xc204e0
cfun>))) 49 {*pa.md:3017} (expr_list:REG_EQUIV (high:SI (symbol_ref:SI ("cfun")
[flags 0x240] <var_decl 0xc204e0 cfun>))
        (nil)))

(code_label 465 64 464 624 "" [1 uses])