--- Additional Comments From markus at oberhumer dot com 2005-04-25 01:01
---
Ah, many thanks for the clarification. Still it's somewhat confusing that f1()
and g1() don't agree after inlining, but "undefined" probably means exactly
that...
--
http://gcc.gnu.org/bugzilla/show_bug.cg
--- Additional Comments From jim dot morrison at gmail dot com 2005-04-25
00:42 ---
Subject: Re: missed always false conditional
On 25 Apr 2005 00:39:23 -, markus at oberhumer dot com
<[EMAIL PROTECTED]> wrote:
>
>
> --
>What|Removed |Added
> -
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-25
00:40 ---
(In reply to comment #15)
> Is this optimization really legal in C/C++? Could some language lawyer look at
> this (and check the output when compiling with -O3):
Overflow/Underflow of signed operands in C/C+
--- Additional Comments From markus at oberhumer dot com 2005-04-25 00:38
---
Is this optimization really legal in C/C++? Could some language lawyer look at
this (and check the output when compiling with -O3):
#include
int f1(int i) { return (i - 2) > i; }
int f2(int i) { return (i
--
What|Removed |Added
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20922
--- Additional Comments From phython at gcc dot gnu dot org 2005-04-18
15:20 ---
Fixed in the last commit.
--
What|Removed |Added
Status|ASSIGNED
--- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-04-18
15:18 ---
Subject: Bug 20922
CVSROOT:/cvs/gcc
Module name:gcc
Changes by: [EMAIL PROTECTED] 2005-04-18 15:18:22
Modified files:
gcc: ChangeLog fold-const.c
gcc/t
--- Additional Comments From phython at gcc dot gnu dot org 2005-04-16
17:12 ---
Created an attachment (id=8654)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8654&action=view)
Fold stuff
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What|Removed |Added
-
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-11
19:49 ---
Confirmed, the code which does this on the RTL level is in
simplify_const_relational_operation.
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What|Removed |Added
--
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-10
23:43 ---
Note this is only true with -fno-wrapv (which is default for C and C++ and I
think Fortran too but not
Java).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20922
--
What|Removed |Added
CC||kazu at cs dot umass dot edu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20922
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-10
21:06 ---
This is not caught untill RTL combine.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20922
--
What|Removed |Added
OtherBugsDependingO||19986
nThis||
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20922
--- Additional Comments From pinskia at gcc dot gnu dot org 2005-04-10
21:02 ---
Reduced testcase showing fold does not do it:
int f(int i)
{
return (i - 2) > i;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20922
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