--- Comment #10 from rguenth at gcc dot gnu dot org 2006-10-23 07:19
---
Subject: Bug 23295
Author: rguenth
Date: Mon Oct 23 07:19:34 2006
New Revision: 117969
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=117969
Log:
2006-10-24 Richard Guenther [EMAIL PROTECTED]
PR
--- Comment #11 from rguenth at gcc dot gnu dot org 2006-10-23 07:20
---
Fixed.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #9 from rguenth at gcc dot gnu dot org 2006-10-22 14:45 ---
Mine.
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rguenth at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #7 from rguenth at gcc dot gnu dot org 2006-04-12 18:10 ---
Didn't we have the canonicalization to put the constant in operand2 if
possible? A lot of transformations rely on that.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23295
--- Comment #8 from pinskia at gcc dot gnu dot org 2006-04-13 01:01 ---
(In reply to comment #7)
Didn't we have the canonicalization to put the constant in operand2 if
possible? A lot of transformations rely on that.
Why should they in this case, they only rely on that for
--- Comment #6 from pinskia at gcc dot gnu dot org 2005-11-30 16:51 ---
Note fixing this will also fix PR 23666 after my patch for moving - ~a = a+1
to negate_expr.
But this needs to depend on the fix for PR 25125 since otherwise we expose a
latent bug in convert.c which shows up in the
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-09
03:12 ---
This is done in simplify-rtx.c for the rtl level.
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What|Removed |Added
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-09
03:31 ---
And then we can get optimial rtl generation right away for PPC:
(insn 20 17 26 0 (set (reg/i:SI 3 r3 [ result ])
(minus:SI (const_int -5 [0xfffb])
(reg:SI 3 r3 [ a ]))) 78
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-09
03:31 ---
Oh, and we remove one gimplfier tempary variable too.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23295
--- Additional Comments From phython at gcc dot gnu dot org 2005-08-09
04:26 ---
This transformation is done with -fwrapv.
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What|Removed |Added
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-09
04:44 ---
I am going to move this to minor as this could be considered a regression in a
way.
It was introduced by:
(fold): Optimize -A - B as -B - A if overflow wraps around.
But in a way since wrapv is
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