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From: "ktietz at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/36321] Optimization higher or eqaul to -O2 produce wrong code
Date: Sat, 24 May 2008 16:37:00 -0000	[thread overview]
Message-ID: <20080524163658.7847.qmail@sourceware.org> (raw)
In-Reply-To: <bug-36321-15155@http.gcc.gnu.org/bugzilla/>



------- Comment #2 from ktietz at gcc dot gnu dot org  2008-05-24 16:36 -------
(In reply to comment #1)
> Can you try this patch:
> 
> Index: i386.md
> ===================================================================
> --- i386.md     (revision 135849)
> +++ i386.md     (working copy)
> @@ -19707,7 +19707,7 @@
>     (set_attr "length" "5")])
> 
>  (define_insn "allocate_stack_worker_64"
> -  [(set (match_operand:DI 0 "register_operand" "=a")
> +  [(set (match_operand:DI 0 "register_operand" "+a")
>         (unspec_volatile:DI [(match_dup 0)] UNSPECV_STACK_PROBE))
>     (set (reg:DI SP_REG) (minus:DI (reg:DI SP_REG) (match_dup 0)))
>     (clobber (reg:DI R10_REG))
> 

I tried it. There is no difference.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36321


  parent reply	other threads:[~2008-05-24 16:37 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-05-24 15:15 [Bug rtl-optimization/36321] New: " ktietz at gcc dot gnu dot org
2008-05-24 16:04 ` [Bug rtl-optimization/36321] " ubizjak at gmail dot com
2008-05-24 16:37 ` ktietz at gcc dot gnu dot org [this message]
2008-05-24 17:02 ` ktietz at gcc dot gnu dot org
2008-05-24 17:55 ` ubizjak at gmail dot com
2008-05-25  6:54 ` [Bug rtl-optimization/36321] Optimization higher or equal " nightstrike at gmail dot com
2008-05-26 13:30 ` rguenth at gcc dot gnu dot org
2008-05-26 13:31 ` [Bug target/36321] " rguenth at gcc dot gnu dot org
2008-11-14 23:11 ` dj at redhat dot com

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