--- Comment #20 from ubizjak at gmail dot com 2008-01-27 17:53 ---
(In reply to comment #19)
> The problem in comment #13 is fixed for 4.3.0 by the fix for PR 34771.
Oops, PR 34711.
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ubizjak at gmail dot com changed:
What|Removed |Added
--- Comment #19 from ubizjak at gmail dot com 2008-01-27 17:52 ---
The problem in comment #13 is fixed for 4.3.0 by the fix for PR 34771.
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ubizjak at gmail dot com changed:
What|Removed |Added
-
--- Comment #18 from ubizjak at gmail dot com 2007-10-29 13:22 ---
Perhaps this analysis will help someone...:
We start with following loop:
void bar() ()
{
unsigned int ivtmp.19;
int pretmp.14;
struct Foo * pretmp.13;
struct Foo x[4];
int D.1669;
struct Foo * D.1668;
:
:
--- Comment #17 from bonzini at gnu dot org 2007-10-29 10:05 ---
> This issue with -4 offset is annoying because code size of offsetted load insn
> is huge:
>
>f: c7 40 fc 01 00 00 00movl $0x1,-0x4(%eax)
-0x4(%eax) is 2 bytes more than (%eax), where IIRC it would be "a3 01 0
--- Comment #16 from ubizjak at gmail dot com 2007-10-26 10:06 ---
(In reply to comment #14)
> > This is now a target specific problem, on i?86 and x86_64 we are left with
> > an
> > offset of -4B and so referencing &a[5] in the exit condition.
> >
> This is PR target/24669.
Hm, the
--- Comment #15 from pinskia at gcc dot gnu dot org 2007-06-04 05:36
---
One should note that:
/* { dg-final { scan-tree-dump-not "offset: -4B" "ivopts" { xfail i?86-*-*
x86_64-*-* } } } */
Will not match any more since switching over offset to sizetype.
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http://gcc.gnu.org/bugz
--- Comment #14 from uros at kss-loka dot si 2006-05-13 08:46 ---
(In reply to comment #13)
> This is now a target specific problem, on i?86 and x86_64 we are left with an
> offset of -4B and so referencing &a[5] in the exit condition.
>
This is PR target/24669.
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uros at kss-loka
--- Comment #13 from rguenth at gcc dot gnu dot org 2006-05-01 15:09
---
This is now a target specific problem, on i?86 and x86_64 we are left with an
offset of -4B and so referencing &a[5] in the exit condition.
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rguenth at gcc dot gnu dot org changed:
What|Remove
