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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/45235] const volatile read moved out of order
Date: Mon, 09 Aug 2010 13:56:00 -0000 [thread overview]
Message-ID: <20100809135606.22339.qmail@sourceware.org> (raw)
In-Reply-To: <bug-45235-6848@http.gcc.gnu.org/bugzilla/>
------- Comment #2 from rguenth at gcc dot gnu dot org 2010-08-09 13:56 -------
Probably easier to not set TREE_READONLY or MEM_READONY_P here.
Index: gcc/emit-rtl.c
===================================================================
--- gcc/emit-rtl.c (revision 163030)
+++ gcc/emit-rtl.c (working copy)
@@ -1669,7 +1670,8 @@ set_mem_attributes_minus_bitpos (rtx ref
base = get_base_address (base);
if (base && DECL_P (base)
&& TREE_READONLY (base)
- && (TREE_STATIC (base) || DECL_EXTERNAL (base)))
+ && (TREE_STATIC (base) || DECL_EXTERNAL (base))
+ && !TREE_THIS_VOLATILE (base))
MEM_READONLY_P (ref) = 1;
/* If this expression uses it's parent's alias set, mark it such
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |wrong-code
Last reconfirmed|0000-00-00 00:00:00 |2010-08-09 13:56:06
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45235
next prev parent reply other threads:[~2010-08-09 13:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-09 11:56 [Bug rtl-optimization/45235] New: " bigotp at acm dot org
2010-08-09 11:57 ` [Bug rtl-optimization/45235] " bigotp at acm dot org
2010-08-09 13:56 ` rguenth at gcc dot gnu dot org [this message]
2010-08-11 21:41 ` pinskia at gcc dot gnu dot org
2010-08-11 22:55 ` bigotp at acm dot org
2010-08-11 23:11 ` rguenth at gcc dot gnu dot org
[not found] <bug-45235-4@http.gcc.gnu.org/bugzilla/>
2010-12-31 17:57 ` bigotp at acm dot org
2011-01-11 15:42 ` rguenth at gcc dot gnu.org
2011-01-11 15:44 ` rguenth at gcc dot gnu.org
2011-12-15 0:40 ` pinskia at gcc dot gnu.org
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