------- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-27
00:00 -------
Confirmed.
Combine is combing the following RTL:
(insn 30 27 31 2 (set (reg:DF 70)
(mem:DF (reg/v/f:SI 64 [ s ]) [0 S8 A64])) -1 (nil)
(nil))
(insn 31 30 32 2 (set (reg:V2DF 69)
(vec_concat:V2DF (reg:DF 70)
(const_double:DF 0 [0x0] 0.0 [0x0.0p+0]))) -1
(insn_list:REG_DEP_TRUE 30 (nil))
(expr_list:REG_DEAD (reg:DF 70)
(nil)))
(insn 32 31 34 2 (set (reg:DF 71)
(vec_select:DF (reg:V2DF 69)
(parallel [
(const_int 0 [0x0])
]))) -1 (insn_list:REG_DEP_TRUE 31 (nil))
(expr_list:REG_DEAD (reg:V2DF 69)
(nil)))
(insn 34 32 36 2 (set (mem:DF (reg/v/f:SI 63 [ d ]) [0 S8 A64])
(reg:DF 71)) -1 (insn_list:REG_DEP_TRUE 32 (nil))
(expr_list:REG_DEAD (reg:DF 71)
(nil)))
into:
(insn 34 32 36 2 (set (mem:DF (reg/v/f:SI 63 [ d ]) [0 S8 A64])
(const_double:DF 0 [0x0] 0.0 [0x0.0p+0])) 65 {*movdf_nointeger} (nil)
(nil))
Which is just wrong.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|c |rtl-optimization
Ever Confirmed| |1
Keywords| |ssemmx, wrong-code
Last reconfirmed|0000-00-00 00:00:00 |2005-04-27 00:00:41
date| |
Summary|Illegal elimination of SSE2 |[4.0/4.1 Regression] Illegal
|load/store using xmm |elimination of SSE2
|intrinsics |load/store using xmm
| |intrinsics
Target Milestone|--- |4.0.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21239
