* [Bug c/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
@ 2006-04-20 15:59 ` amylaar at gcc dot gnu dot org
2006-04-20 16:05 ` rguenth at gcc dot gnu dot org
` (18 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-20 15:59 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from amylaar at gcc dot gnu dot org 2006-04-20 15:58 -------
This worked in 3.5.0 20040512 (experimental), but failed in 3.5.0 20040630
(experimental)
--
amylaar at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.1.0 4.2.0
Known to work| |3.4.0 3.4.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug c/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
2006-04-20 15:59 ` [Bug c/27226] " amylaar at gcc dot gnu dot org
@ 2006-04-20 16:05 ` rguenth at gcc dot gnu dot org
2006-04-20 18:05 ` [Bug middle-end/27226] " amylaar at gcc dot gnu dot org
` (17 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-04-20 16:05 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2006-04-20 16:05 -------
You might want to dive into builtins.c:get_pointer_alignment.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
2006-04-20 15:59 ` [Bug c/27226] " amylaar at gcc dot gnu dot org
2006-04-20 16:05 ` rguenth at gcc dot gnu dot org
@ 2006-04-20 18:05 ` amylaar at gcc dot gnu dot org
2006-04-20 18:10 ` amylaar at gcc dot gnu dot org
` (16 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-20 18:05 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from amylaar at gcc dot gnu dot org 2006-04-20 18:05 -------
(In reply to comment #2)
> You might want to dive into builtins.c:get_pointer_alignment.
>
Hmm, indeed, I see that in 3.5.0 20040512, expand_builtin_memcpy
has found a dest_align of 32 and proceeded to go the store_by_pieces route.
The tree passed to get_poiter_alignment for the destination was:
<nop_expr 0xb57cd794
type <pointer_type 0xb58411b0
type <integer_type 0xb58562f4 char QI
size <integer_cst 0xb5854104 constant 8>
unit size <integer_cst 0xb5854118 constant 1>
align 8 symtab 0 alias set -1 precision 8 min <integer_cst
0xb58541a
4 -128> max <integer_cst 0xb58541b8 127>
pointer_to_this <pointer_type 0xb58411b0>>
unsigned SI
size <integer_cst 0xb58547a8 constant 32>
unit size <integer_cst 0xb58547d0 constant 4>
align 32 symtab 0 alias set -1>
arg 0 <plus_expr 0xb583e150
type <pointer_type 0xb57ce438 type <array_type 0xb57ce0d8>
unsigned SI size <integer_cst 0xb58547a8 32> unit size <integer_cst
0xb58547d0 4>
align 32 symtab 0 alias set -1>
arg 0 <nop_expr 0xb57cd780 type <pointer_type 0xb57ce438>
arg 0 <addr_expr 0xb57cd730 type <pointer_type 0xb57ce4a4>
arg 0 <var_decl 0xb57ce288 s>>>
arg 1 <integer_cst 0xb57cd76c constant 4>>>
In mainline, the calculated dest_align is 8. The tree passed to
get_pointer_alignment is:
<addr_expr 0xb58b13e0
type <pointer_type 0xb58c6170
type <integer_type 0xb58bd170 char sizes-gimplified public string-flag
QI
size <integer_cst 0xb58ac1c8 constant invariant 8>
unit size <integer_cst 0xb58ac1e0 constant invariant 1>
align 8 symtab 0 alias set -1 precision 8 min <integer_cst
0xb58ac228 -128> max <integer_cst 0xb58ac288 127>
pointer_to_this <pointer_type 0xb58c6170>>
unsigned SI
size <integer_cst 0xb58ac3c0 constant invariant 32>
unit size <integer_cst 0xb58ac150 constant invariant 4>
align 32 symtab 0 alias set -1>
invariant
arg 0 <array_ref 0xb593a820 type <integer_type 0xb58bd170 char>
arg 0 <component_ref 0xb58bb078 type <array_type 0xb5938730>
arg 0 <var_decl 0xb58ba108 s> arg 1 <field_decl 0xb593878c str>>
arg 1 <integer_cst 0xb58ac168 constant invariant 0> arg 2 <integer_cst
0xb58ac168 0> arg 3 <integer_cst 0xb58ac1e0 1>>>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (2 preceding siblings ...)
2006-04-20 18:05 ` [Bug middle-end/27226] " amylaar at gcc dot gnu dot org
@ 2006-04-20 18:10 ` amylaar at gcc dot gnu dot org
2006-04-20 18:58 ` amylaar at gcc dot gnu dot org
` (15 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-20 18:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from amylaar at gcc dot gnu dot org 2006-04-20 18:10 -------
Created an attachment (id=11304)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11304&action=view)
proposed patch
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (3 preceding siblings ...)
2006-04-20 18:10 ` amylaar at gcc dot gnu dot org
@ 2006-04-20 18:58 ` amylaar at gcc dot gnu dot org
2006-04-20 20:38 ` amylaar at gcc dot gnu dot org
` (14 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-20 18:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from amylaar at gcc dot gnu dot org 2006-04-20 18:58 -------
(In reply to comment #4)
> Created an attachment (id=11304)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11304&action=view) [edit]
> proposed patch
>
Needs some more work.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (4 preceding siblings ...)
2006-04-20 18:58 ` amylaar at gcc dot gnu dot org
@ 2006-04-20 20:38 ` amylaar at gcc dot gnu dot org
2006-04-20 20:47 ` rguenth at gcc dot gnu dot org
` (13 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-20 20:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from amylaar at gcc dot gnu dot org 2006-04-20 20:38 -------
Created an attachment (id=11305)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11305&action=view)
proposed patch for 4.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (5 preceding siblings ...)
2006-04-20 20:38 ` amylaar at gcc dot gnu dot org
@ 2006-04-20 20:47 ` rguenth at gcc dot gnu dot org
2006-04-20 21:09 ` amylaar at gcc dot gnu dot org
` (12 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-04-20 20:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from rguenth at gcc dot gnu dot org 2006-04-20 20:47 -------
I suggest you test on an architecture that traps on unaligned accesses, so as
ia64 with the correct prctrl setup. In particular you seem to miss that
ARRAY_REF can have a custom index range that doesn't start with zero.
Otherwise the patch looks reasonable, though you may wait on the backport of
the bits from mainline for the 4.1 branch.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (6 preceding siblings ...)
2006-04-20 20:47 ` rguenth at gcc dot gnu dot org
@ 2006-04-20 21:09 ` amylaar at gcc dot gnu dot org
2006-04-20 21:23 ` rguenth at gcc dot gnu dot org
` (11 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-20 21:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from amylaar at gcc dot gnu dot org 2006-04-20 21:09 -------
(In reply to comment #7)
> I suggest you test on an architecture that traps on unaligned accesses, so as
> ia64 with the correct prctrl setup.
I don't have access to an ia64 host, but sh-elf is a STRICT_ALIGNMENT target,
too.
> In particular you seem to miss that
> ARRAY_REF can have a custom index range that doesn't start with zero.
get_inner_reference should take care of that.
> Otherwise the patch looks reasonable, though you may wait on the backport of
> the bits from mainline for the 4.1 branch.
When I backported the mainline patch to our 4.1 based sources I've found that
it did ICE on dhrystone. The 4.1 patch is completely re-written. I'll have to
forward-port that when I find some time...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (7 preceding siblings ...)
2006-04-20 21:09 ` amylaar at gcc dot gnu dot org
@ 2006-04-20 21:23 ` rguenth at gcc dot gnu dot org
2006-04-27 15:35 ` amylaar at gcc dot gnu dot org
` (10 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-04-20 21:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from rguenth at gcc dot gnu dot org 2006-04-20 21:23 -------
Ah, I see. I only looked at the mainline patch. I was refering to the patch
for PR26565 which is still pending for 4.1 and will bring the 4.1 version
in-line with the mainline version. I guess sh is also affected for PR26565.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-04-20 21:23:19
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (8 preceding siblings ...)
2006-04-20 21:23 ` rguenth at gcc dot gnu dot org
@ 2006-04-27 15:35 ` amylaar at gcc dot gnu dot org
2006-05-08 14:23 ` rguenth at gcc dot gnu dot org
` (9 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-04-27 15:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from amylaar at gcc dot gnu dot org 2006-04-27 15:35 -------
(In reply to comment #6)
> Created an attachment (id=11305)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11305&action=view) [edit]
> proposed patch for 4.1
>
The assignment
inner = max_align;
must come before the
if (handled_component_p (exp))
test.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (9 preceding siblings ...)
2006-04-27 15:35 ` amylaar at gcc dot gnu dot org
@ 2006-05-08 14:23 ` rguenth at gcc dot gnu dot org
2006-05-08 21:10 ` amylaar at gcc dot gnu dot org
` (8 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-05-08 14:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from rguenth at gcc dot gnu dot org 2006-05-08 14:23 -------
The patch looks good - are you going to test and submit it?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (10 preceding siblings ...)
2006-05-08 14:23 ` rguenth at gcc dot gnu dot org
@ 2006-05-08 21:10 ` amylaar at gcc dot gnu dot org
2006-05-09 7:50 ` rguenth at gcc dot gnu dot org
` (7 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: amylaar at gcc dot gnu dot org @ 2006-05-08 21:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #12 from amylaar at gcc dot gnu dot org 2006-05-08 21:09 -------
(In reply to comment #11)
> The patch looks good - are you going to test and submit it?
I hope so, however at the moment I have trouble with newlib. The autoconf
upgrade seems rather half-baked at the moment.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (11 preceding siblings ...)
2006-05-08 21:10 ` amylaar at gcc dot gnu dot org
@ 2006-05-09 7:50 ` rguenth at gcc dot gnu dot org
2006-06-07 21:29 ` ramana dot radhakrishnan at codito dot com
` (6 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-05-09 7:50 UTC (permalink / raw)
To: gcc-bugs
------- Comment #13 from rguenth at gcc dot gnu dot org 2006-05-09 07:50 -------
Created an attachment (id=11417)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11417&action=view)
updated patch
I updated the patch so it applies to mainline and 4.1 and bootstrapped and
regtested it on ia64-unknown-linux-gnu with trapping unaligned access.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #11304|0 |1
is obsolete| |
Attachment #11305|0 |1
is obsolete| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (12 preceding siblings ...)
2006-05-09 7:50 ` rguenth at gcc dot gnu dot org
@ 2006-06-07 21:29 ` ramana dot radhakrishnan at codito dot com
2006-09-01 16:55 ` rguenth at gcc dot gnu dot org
` (5 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: ramana dot radhakrishnan at codito dot com @ 2006-06-07 21:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #14 from ramana dot radhakrishnan at codito dot com 2006-06-07 21:20 -------
Add self to CC.
--
ramana dot radhakrishnan at codito dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ramana dot radhakrishnan at
| |codito dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (13 preceding siblings ...)
2006-06-07 21:29 ` ramana dot radhakrishnan at codito dot com
@ 2006-09-01 16:55 ` rguenth at gcc dot gnu dot org
2006-09-01 16:56 ` [Bug middle-end/27226] [4.1/4.2 Regression] " rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-09-01 16:55 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2006-04-20 21:23:19 |2006-09-01 16:55:33
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] [4.1/4.2 Regression] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (14 preceding siblings ...)
2006-09-01 16:55 ` rguenth at gcc dot gnu dot org
@ 2006-09-01 16:56 ` rguenth at gcc dot gnu dot org
2006-09-01 20:25 ` rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-09-01 16:56 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Compiler looses track of |[4.1/4.2 Regression]
|alignment for |Compiler looses track of
|emit_block_move |alignment for
| |emit_block_move
Target Milestone|--- |4.1.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] [4.1/4.2 Regression] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (15 preceding siblings ...)
2006-09-01 16:56 ` [Bug middle-end/27226] [4.1/4.2 Regression] " rguenth at gcc dot gnu dot org
@ 2006-09-01 20:25 ` rguenth at gcc dot gnu dot org
2006-09-01 20:27 ` [Bug middle-end/27226] [4.1 " rguenth at gcc dot gnu dot org
` (2 subsequent siblings)
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-09-01 20:25 UTC (permalink / raw)
To: gcc-bugs
------- Comment #15 from rguenth at gcc dot gnu dot org 2006-09-01 20:25 -------
Subject: Bug 27226
Author: rguenth
Date: Fri Sep 1 20:25:34 2006
New Revision: 116641
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116641
Log:
2006-09-01 J"orn Rennecke <joern.rennecke@st.com>
Richard Guenther <rguenther@suse.de>
Adam Nemet <anemet@caviumnetworks.com>
PR middle-end/27226
* builtins.c (get_pointer_alignment): Handle more forms
of base addresses that can be used to derive more precise
information about alignment.
* gcc.target/mips/memcpy-1.c: New testcase.
* gcc.dg/pr27226.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/pr27226.c
trunk/gcc/testsuite/gcc.target/mips/memcpy-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] [4.1 Regression] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (16 preceding siblings ...)
2006-09-01 20:25 ` rguenth at gcc dot gnu dot org
@ 2006-09-01 20:27 ` rguenth at gcc dot gnu dot org
2006-09-18 9:16 ` rguenth at gcc dot gnu dot org
2006-09-18 9:17 ` rguenth at gcc dot gnu dot org
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-09-01 20:27 UTC (permalink / raw)
To: gcc-bugs
------- Comment #16 from rguenth at gcc dot gnu dot org 2006-09-01 20:26 -------
Fixed on the mainline.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|4.1.0 4.2.0 |4.1.0
Known to work|3.4.0 3.4.3 |3.4.0 3.4.3 4.2.0
Summary|[4.1/4.2 Regression] |[4.1 Regression] Compiler
|Compiler looses track of |looses track of alignment
|alignment for |for emit_block_move
|emit_block_move |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] [4.1 Regression] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (17 preceding siblings ...)
2006-09-01 20:27 ` [Bug middle-end/27226] [4.1 " rguenth at gcc dot gnu dot org
@ 2006-09-18 9:16 ` rguenth at gcc dot gnu dot org
2006-09-18 9:17 ` rguenth at gcc dot gnu dot org
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-09-18 9:16 UTC (permalink / raw)
To: gcc-bugs
------- Comment #17 from rguenth at gcc dot gnu dot org 2006-09-18 09:16 -------
Subject: Bug 27226
Author: rguenth
Date: Mon Sep 18 09:16:16 2006
New Revision: 117018
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117018
Log:
2006-09-18 Richard Guenther <rguenther@suse.de>
Backport from mainline:
J"orn Rennecke <joern.rennecke@st.com>
Richard Guenther <rguenther@suse.de>
Adam Nemet <anemet@caviumnetworks.com>
PR middle-end/27226
* builtins.c (get_pointer_alignment): Handle more forms
of base addresses that can be used to derive more precise
information about alignment.
* gcc.target/mips/memcpy-1.c: New testcase.
Added:
branches/gcc-4_1-branch/gcc/testsuite/gcc.target/mips/memcpy-1.c
- copied unchanged from r116641,
trunk/gcc/testsuite/gcc.target/mips/memcpy-1.c
Modified:
branches/gcc-4_1-branch/gcc/ChangeLog
branches/gcc-4_1-branch/gcc/builtins.c
branches/gcc-4_1-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread
* [Bug middle-end/27226] [4.1 Regression] Compiler looses track of alignment for emit_block_move
2006-04-20 15:53 [Bug c/27226] New: Compiler looses track of alignment for emit_block_move amylaar at gcc dot gnu dot org
` (18 preceding siblings ...)
2006-09-18 9:16 ` rguenth at gcc dot gnu dot org
@ 2006-09-18 9:17 ` rguenth at gcc dot gnu dot org
19 siblings, 0 replies; 21+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2006-09-18 9:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #18 from rguenth at gcc dot gnu dot org 2006-09-18 09:16 -------
Fixed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27226
^ permalink raw reply [flat|nested] 21+ messages in thread