------- Comment #3 from bergner at gcc dot gnu dot org 2009-08-26 15:14 -------
Actually, they're already reordered by the time we call ira_color and the ira
dumps shows that:
;; Function f (f)
starting the processing of deferred insns
ending the processing of deferred insns
df_analyze called
scanning new insn with uid = 14.
verify found no changes in insn with uid = 14.
deleting insn with uid = 9.
Building IRA IR
...
Giving us:
(insn 7 4 8 2 pr41171.c:4 (set (reg:SI 121)
(const_int 7 [0x7])) 344 {*movsi_internal1} (expr_list:REG_EQUIV
(const_int 7 [0x7])
(nil)))
(insn 8 7 14 2 pr41171.c:4 (set (mem:SI (reg:SI 3 3 [ x ]) [2 S4 A32])
(reg:SI 121)) 344 {*movsi_internal1} (expr_list:REG_DEAD (reg:SI 121)
(expr_list:REG_DEAD (reg:SI 3 3 [ x ])
(expr_list:REG_EQUAL (const_int 7 [0x7])
(nil)))))
(insn 14 8 10 2 pr41171.c:5 (set (reg:SI 122)
(const_int 4 [0x4])) 344 {*movsi_internal1} (expr_list:REG_EQUIV
(const_int 4 [0x4])
(nil)))
(insn 10 14 13 2 pr41171.c:5 (set (mem:SI (reg:SI 4 4 [ y ]) [2 S4 A32])
(reg:SI 122)) 344 {*movsi_internal1} (expr_list:REG_DEAD (reg:SI 122)
(expr_list:REG_DEAD (reg:SI 4 4 [ y ])
(expr_list:REG_EQUAL (const_int 4 [0x4])
(nil)))))
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41171
