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[Bug target/24419] [3.4/4.0/4.1 Regression]: ix86 prologue puts values beyond stack
- From: "hjl at lucon dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Oct 2005 04:37:55 -0000
- Subject: [Bug target/24419] [3.4/4.0/4.1 Regression]: ix86 prologue puts values beyond stack
- References: <bug-24419-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from hjl at lucon dot org 2005-10-18 04:37 -------
>From bar.i.26.flow2:
(insn/f 51 11 52 0 (set (mem:DI (plus:DI (reg/f:DI 7 sp)
(const_int -16 [0xfffffffffffffff0])) [0 S8 A8])
(reg:DI 3 bx)) -1 (nil)
(expr_list:REG_DEAD (reg:DI 3 bx)
(nil)))
(insn/f 52 51 53 0 (set (mem:DI (plus:DI (reg/f:DI 7 sp)
(const_int -8 [0xfffffffffffffff8])) [0 S8 A8])
(reg:DI 6 bp)) -1 (nil)
(expr_list:REG_DEAD (reg:DI 6 bp)
(nil)))
(insn/f 53 52 54 0 (parallel [
(set (reg/f:DI 7 sp)
(plus:DI (reg/f:DI 7 sp)
(const_int -16 [0xfffffffffffffff0])))
(clobber (reg:CC 17 flags))
(clobber (mem:BLK (scratch) [0 A8]))
]) -1 (nil)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
Gcc doesn't tell the truth here since memory isn't/shouldn't be clobber
when adjusting SP.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24419