[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 #16 from John David Anglin <danglin at gcc dot gnu.org> 2011-05-23 
16:40:57 UTC ---
The use is deleted because insn 434 has been retargeted from
code_label 322 to code_label 465:

(insn 434 58 366 ../../gcc/gcc/basic-block.h:194 (sequence [
            (jump_insn 59 58 92 ../../gcc/gcc/basic-block.h:194 (set (pc)
                    (if_then_else (gtu (reg:SI 28 %r28 [orig:132
<variable>.base.num ] [132])
                            (const_int 2 [0x2]))
                        (label_ref:SI 465)
                        (pc))) 25 {*pa.md:1770} (expr_list:REG_DEAD (reg:SI 28
%r28 [orig:132 <variable>.base.num ] [132])
                    (expr_list:REG_BR_PROB (const_int 9700 [0x25e4])
                        (nil))))
            (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))

The code_label 322 then has zero uses.