--- Comment #8 from rguenth at gcc dot gnu dot org 2009-03-28 12:52 ---
Subject: Bug 38180
Author: rguenth
Date: Sat Mar 28 12:52:13 2009
New Revision: 145184
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=145184
Log:
2009-03-28 Richard Guenther rguent...@suse.de
PR
--- Comment #9 from rguenth at gcc dot gnu dot org 2009-03-28 12:52 ---
Fixed.
--
rguenth at gcc dot gnu dot org changed:
What|Removed |Added
Status|ASSIGNED
Richard,
const volatile is a perfectly valid combination.
What is says is it's read only but may change value in ways unknown to the
compiler think of a memory mapped hardware register which is read only such as
some kind of counter .
Cheers
Graham
--- Comment #6 from graham dot stott at btinternet dot com 2008-11-26
14:02 ---
Subject: Re: CCP does not propagate through constant initializers
Richard,
const volatile is a perfectly valid combination.
What is says is it's read only but may change value in ways unknown to the
--- Comment #5 from rguenther at suse dot de 2008-11-26 13:05 ---
Subject: Re: CCP does not propagate through
constant initializers
On Wed, 26 Nov 2008, graham dot stott at btinternet dot com wrote:
--- Comment #4 from graham dot stott at btinternet dot com 2008-11-26
at gcc dot gnu dot org [EMAIL PROTECTED]
wrote:
From: rguenth at gcc dot gnu dot org [EMAIL PROTECTED]
Subject: [Bug tree-optimization/38180] CCP does not propagate through
constant initializers
To: gcc-bugs@gcc.gnu.org
Date: Wednesday, 26 November, 2008, 12:28 PM
--- Comment #3 from rguenth
(void)
{
return value;
}
Here it's not valid to ccp value into the return value and return 42
Graham
--- On Wed, 26/11/08, rguenth at gcc dot gnu dot org [EMAIL PROTECTED] wrote:
From: rguenth at gcc dot gnu dot org [EMAIL PROTECTED]
Subject: [Bug tree-optimization/38180] CCP does
--- Comment #3 from rguenth at gcc dot gnu dot org 2008-11-26 12:28 ---
Subject: Bug 38180
Author: rguenth
Date: Wed Nov 26 12:27:33 2008
New Revision: 142217
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=142217
Log:
2008-11-26 Richard Guenther [EMAIL PROTECTED]
PR
--- Comment #7 from rguenther at suse dot de 2008-11-26 15:13 ---
Subject: Re: CCP does not propagate through
constant initializers
On Wed, 26 Nov 2008, graham dot stott at btinternet dot com wrote:
--- Comment #6 from graham dot stott at btinternet dot com 2008-11-26
14:02
--- Comment #1 from rguenth at gcc dot gnu dot org 2008-11-19 20:01 ---
Mine.
--
rguenth at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #2 from rguenth at gcc dot gnu dot org 2008-11-19 20:02 ---
Visiting statement:
p_1 = x;
which is likely CONSTANT
Lattice value changed to CONSTANT x. Adding SSA edges to worklist.
Visiting statement:
y_2 = *p_1;
which is likely CONSTANT
Lattice value changed to VARYING.
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