[Bug middle-end/29519] [4.2 Regression] Bad code on MIPS with -fnon-call-exceptions

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-10-19 23:10 -------
Expand does:

;; return t->f13 == 4294967295B
(insn 10 9 11 (set (reg/f:SI 196)
        (mem/s/f/j:SI (reg/v/f:SI 194 [ t ]) [0 <variable>.f13+0 S4 A32])) -1
(nil)
    (nil))

(insn 11 10 12 (set (reg:SI 198)
        (plus:SI (reg/f:SI 196)
            (const_int 1 [0x1]))) -1 (nil)
    (nil))

(insn 12 11 13 (set (reg:SI 197)
        (eq:SI (reg:SI 198)
            (const_int 0 [0x0]))) -1 (nil)
    (nil))

(insn 13 12 14 (set (reg:SI 193 [ <result> ])
        (reg:SI 197)) -1 (nil)
    (nil))

(jump_insn 14 13 15 (set (pc)
        (label_ref 0)) -1 (nil)
    (nil))


And then CSE1 changes that into:
(insn 6 8 7 2 (set (reg/v/f:SI 194 [ t ])
        (reg:SI 4 $4 [ t ])) 213 {*movsi_internal} (nil)
    (expr_list:REG_EQUIV (mem/f/c/i:SI (reg/f:SI 77 $arg) [0 t+0 S4 A32])
        (nil)))

(note 7 6 10 2 NOTE_INSN_FUNCTION_BEG)

(insn 10 7 16 2 (set (reg/f:SI 196 [ <variable>.f13 ])
        (mem/s/f/j:SI (reg/v/f:SI 194 [ t ]) [0 <variable>.f13+0 S4 A32])) 213
{*movsi_internal} (nil)
    (nil))

(note 16 10 19 2 NOTE_INSN_FUNCTION_END)

(insn 19 16 20 2 (asm_input ("")) -1 (nil)
    (nil))

(insn 20 19 26 2 (set (reg/i:SI 2 $2 [ <result> ])
        (const_int 0 [0x0])) 213 {*movsi_internal} (nil)
    (nil))


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|target                      |middle-end


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29519