--- Comment #10 from rguenth at gcc dot gnu dot org 2006-10-22 15:12
---
With the patch for 23295 we get the behavior as noted in comment #7. This is
due
to negate_expr_p (correctly) containing
case BIT_NOT_EXPR:
return INTEGRAL_TYPE_P (type)
(TYPE_UNSIGNED
--- Comment #9 from pinskia at gcc dot gnu dot org 2005-11-30 16:48 ---
This is exactly the same issue as PR 23295 now (I should copy some of the
comments from here to there).
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #8 from pinskia at gcc dot gnu dot org 2005-11-29 00:39 ---
I am not going to fix this now as it exposes too many VRP issues and other
issues.
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pinskia at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #7 from pinskia at gcc dot gnu dot org 2005-11-27 22:26 ---
After the patch which I am about to test, we get this with -fwrapv (yes that is
weird we get it with something which should be cause optimizations not to
happen and not the other way around).
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--- Comment #4 from pinskia at gcc dot gnu dot org 2005-11-26 21:43 ---
The problem here is my fault, slightly. Fold is converting -(~a) in the
NEGATE_EXPR but not in the generic functions to do the negation. I will do the
patch for this one. (I am saying that -(~a) is more complex
--- Comment #5 from pinskia at gcc dot gnu dot org 2005-11-26 22:38 ---
Actually there is two things that need to be done, first is what I said in
comment # 4 and then the second thing is for MINUS_EXPR to use those functions
instead of checking explicatly for NEGATE_EXPR.
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--- Comment #6 from pinskia at gcc dot gnu dot org 2005-11-26 22:53 ---
Actually it is just a check for flag_wrapv which looks to be wrong as far as I
can tell.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23666
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-17
02:11 ---
Confirmed.
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What|Removed |Added
Status|UNCONFIRMED |NEW
--- Additional Comments From falk at debian dot org 2005-09-01 06:19
---
Works for me on alphaev68-unknown-linux-gnu
tiw with 4.1.0 20050819.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23666
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-01
11:59 ---
(In reply to comment #1)
Works for me on alphaev68-unknown-linux-gnu
tiw with 4.1.0 20050819.
And does not with 4.1.0 20050901 on i686-pc-linux-gnu or on powerpc-darwin.
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