* [Bug regression/48262] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
@ 2011-03-23 23:23 ` meissner at gcc dot gnu.org
2011-03-23 23:42 ` pinskia at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2011-03-23 23:23 UTC (permalink / raw)
To: gcc-bugs
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |richard.sandiford at linaro
| |dot org
--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> 2011-03-23 22:34:45 UTC ---
I tracked down the bug, and it is occurring at subversion id 171341 submitted
by richard.sandiford@linaro.org.
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* [Bug regression/48262] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
2011-03-23 23:23 ` [Bug regression/48262] " meissner at gcc dot gnu.org
@ 2011-03-23 23:42 ` pinskia at gcc dot gnu.org
2011-03-23 23:43 ` pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2011-03-23 23:42 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-23 23:30:15 UTC ---
gcc.c-torture/compile/900116-1.c fails at -O3 -maltivec but with a different
ICE but revision which caused it is the same.
Some debugging from that file:
(gdb) p code
$2 = VEC_EXTRACT_EVEN_EXPR
(gdb) p debug_generic_expr (type)
vector(16) char
$3 = void
(gdb) p this_optab
$4 = (optab) 0x1778538
(gdb) p *this_optab
$5 = {code = UNKNOWN, libcall_suffix = 0 '\000', libcall_basename = 0x0,
libcall_gen = 0, handlers = {{insn_code = 0} <repeats 48 times>,
{insn_code = -26}, {insn_code = -27}, {insn_code = -29}, {insn_code = 0},
{insn_code = 0}, {insn_code = -28}, {insn_code = 0}}}
(gdb) p ops
$6 = (sepops) 0x7fffffffb870
(gdb) p *ops
$7 = {code = VEC_EXTRACT_EVEN_EXPR, location = 1236, type = 0x7ffff6d7a930, op0
= 0x7ffff6df5c60, op1 = 0x7ffff6d98688, op2 = 0x0}
(gdb) p debug_generic_expr(ops.op1)
vect_var_.59_10
$8 = void
(gdb) p debug_generic_expr(ops.op0)
vect_var_.57_116
$9 = void
------ CUT -----
So it looks like it broke VEC_EXTRACT_EVEN_EXPR also.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug regression/48262] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
2011-03-23 23:23 ` [Bug regression/48262] " meissner at gcc dot gnu.org
2011-03-23 23:42 ` pinskia at gcc dot gnu.org
@ 2011-03-23 23:43 ` pinskia at gcc dot gnu.org
2011-03-23 23:57 ` pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2011-03-23 23:43 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-23 23:33:57 UTC ---
CODE_FOR_movmisalignv2di
(mem:V2DI (plus:DI (reg/f:DI 203 [ vect_p.29 ])
(reg:DI 188 [ ivtmp.122 ])) [3 MEM[base: vect_p.29_94, index:
ivtmp.122_61, offset: 0B]+0 S16 A64])
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug regression/48262] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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To: gcc-bugs
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-23 23:40:18 UTC ---
;; Under VSX, vectors of 4/8 byte alignments do not need to be aligned
;; since the load already handles it.
(define_expand "movmisalign<mode>"
[(set (match_operand:VEC_N 0 "vfloat_operand" "")
(match_operand:VEC_N 1 "vfloat_operand" ""))]
"VECTOR_MEM_VSX_P (<MODE>mode) && TARGET_ALLOW_MOVMISALIGN"
"")
Only accepts registers while expr.c thinks the operands should allow memory
too.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug regression/48262] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2011-03-24 0:08 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-23 23:43:15 UTC ---
Here is a patch for the movmisalign issue:
Index: vector.md
===================================================================
--- vector.md (revision 171367)
+++ vector.md (working copy)
@@ -871,8 +871,8 @@ (define_expand "vec_realign_load_<mode>"
;; Under VSX, vectors of 4/8 byte alignments do not need to be aligned
;; since the load already handles it.
(define_expand "movmisalign<mode>"
- [(set (match_operand:VEC_N 0 "vfloat_operand" "")
- (match_operand:VEC_N 1 "vfloat_operand" ""))]
+ [(set (match_operand:VEC_N 0 "nonimmediate_operand" "")
+ (match_operand:VEC_N 1 "any_operand" ""))]
"VECTOR_MEM_VSX_P (<MODE>mode) && TARGET_ALLOW_MOVMISALIGN"
"")
--- CUT ---
Still looking into the other issue.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug regression/48262] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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2011-03-24 0:08 ` pinskia at gcc dot gnu.org
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2011-03-24 1:49 ` [Bug target/48262] [4.7 Regression] " pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2011-03-24 1:15 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-24 00:07:49 UTC ---
(In reply to comment #2)
> gcc.c-torture/compile/900116-1.c fails at -O3 -maltivec but with a different
> ICE but revision which caused it is the same.
The problem here is the wrong mode is being used to create the output reg.
Here is the patch for the other issue:
Index: altivec.md
===================================================================
--- altivec.md (revision 171367)
+++ altivec.md (working copy)
@@ -2422,7 +2422,7 @@ (define_insn "altivec_stvrxl"
(define_expand "vec_extract_evenv4si"
[(set (match_operand:V4SI 0 "register_operand" "")
- (unspec:V8HI [(match_operand:V4SI 1 "register_operand" "")
+ (unspec:V4SI [(match_operand:V4SI 1 "register_operand" "")
(match_operand:V4SI 2 "register_operand" "")]
UNSPEC_EXTEVEN_V4SI))]
"TARGET_ALTIVEC"
@@ -2455,7 +2455,7 @@ (define_expand "vec_extract_evenv4si"
(define_expand "vec_extract_evenv4sf"
[(set (match_operand:V4SF 0 "register_operand" "")
- (unspec:V8HI [(match_operand:V4SF 1 "register_operand" "")
+ (unspec:V4SF [(match_operand:V4SF 1 "register_operand" "")
(match_operand:V4SF 2 "register_operand" "")]
UNSPEC_EXTEVEN_V4SF))]
"TARGET_ALTIVEC"
@@ -2487,7 +2487,7 @@ (define_expand "vec_extract_evenv4sf"
}")
(define_expand "vec_extract_evenv8hi"
- [(set (match_operand:V4SI 0 "register_operand" "")
+ [(set (match_operand:V8HI 0 "register_operand" "")
(unspec:V8HI [(match_operand:V8HI 1 "register_operand" "")
(match_operand:V8HI 2 "register_operand" "")]
UNSPEC_EXTEVEN_V8HI))]
@@ -2520,9 +2520,9 @@ (define_expand "vec_extract_evenv8hi"
}")
(define_expand "vec_extract_evenv16qi"
- [(set (match_operand:V4SI 0 "register_operand" "")
- (unspec:V8HI [(match_operand:V16QI 1 "register_operand" "")
- (match_operand:V16QI 2 "register_operand" "")]
+ [(set (match_operand:V16QI 0 "register_operand" "")
+ (unspec:V16QI [(match_operand:V16QI 1 "register_operand" "")
+ (match_operand:V16QI 2 "register_operand" "")]
UNSPEC_EXTEVEN_V16QI))]
"TARGET_ALTIVEC"
"
@@ -2554,7 +2554,7 @@ (define_expand "vec_extract_evenv16qi"
(define_expand "vec_extract_oddv4si"
[(set (match_operand:V4SI 0 "register_operand" "")
- (unspec:V8HI [(match_operand:V4SI 1 "register_operand" "")
+ (unspec:V4SI [(match_operand:V4SI 1 "register_operand" "")
(match_operand:V4SI 2 "register_operand" "")]
UNSPEC_EXTODD_V4SI))]
"TARGET_ALTIVEC"
@@ -2587,7 +2587,7 @@ (define_expand "vec_extract_oddv4si"
(define_expand "vec_extract_oddv4sf"
[(set (match_operand:V4SF 0 "register_operand" "")
- (unspec:V8HI [(match_operand:V4SF 1 "register_operand" "")
+ (unspec:V4SF [(match_operand:V4SF 1 "register_operand" "")
(match_operand:V4SF 2 "register_operand" "")]
UNSPEC_EXTODD_V4SF))]
"TARGET_ALTIVEC"
--- CUT ---
I have not looked to see if this fixes all the issues reported by the testsuite
and I have not bootstrapped/tested it. I also don't have access to a PPC
machine any more.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
` (5 preceding siblings ...)
2011-03-24 1:15 ` pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2011-03-24 1:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48262
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Keywords| |ice-on-valid-code
Last reconfirmed| |2011.03.24 00:13:45
Component|regression |target
Host|powerpc64-linux |
Ever Confirmed|0 |1
Summary|Subversion id 171341 breaks |[4.7 Regression] Subversion
|various vectorization files |id 171341 breaks various
|on powerpc |vectorization files on
| |powerpc
Target Milestone|--- |4.7.0
Build|powerpc64-linux |
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-03-24 00:13:45 UTC ---
Confirmed.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: rsandifo at gcc dot gnu.org @ 2011-03-24 8:59 UTC (permalink / raw)
To: gcc-bugs
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rsandifo@gcc.gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org
--- Comment #8 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-03-24 08:52:21 UTC ---
Unfortunately, this kind of target.md fallout was to
some extent expected. Thanks Andrew for fixing it.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: dominiq at lps dot ens.fr @ 2011-03-24 14:36 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-03-24 14:16:54 UTC ---
On powerpc-apple-darwin9, all the tests ran by vect.exp pass with the patches
in comments #5 and #6 on top of revision 171367.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2011-03-24 15:50 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #10 from Michael Meissner <meissner at gcc dot gnu.org> 2011-03-24 15:02:47 UTC ---
The vec_extract patches look good.
However, I think the movmisalign patch is a band-aid. The exander should call
force_reg if the predicates don't match for movmisalign (probably ternary ops)
like it does for every other RTL expansion.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2011-03-24 21:00 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #11 from Michael Meissner <meissner at gcc dot gnu.org> 2011-03-24 19:44:12 UTC ---
I was wrong with my previous comment about movmisalign, and both patches look
good.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: dominiq at lps dot ens.fr @ 2011-03-24 21:18 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-03-24 20:00:17 UTC ---
What about the patch in http://gcc.gnu.org/ml/gcc-patches/2011-03/msg01595.html
? Does it come on top of the patches in comments #5 and #6 or does it replace
them?
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2011-03-24 23:04 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #13 from Michael Meissner <meissner at gcc dot gnu.org> 2011-03-24 20:09:06 UTC ---
My reading of the patches, is the rs6000 port was broken, and Andrew's two
patches fixes this.
Richard's patch would have the effect that we wouldn't notice if the two
patches aren't installed. But it is always better to have correct RTL, so I
would say even if Richard's patch goes in, we should apply Andrew's two patches
as well.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
` (12 preceding siblings ...)
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From: rsandifo at gcc dot gnu.org @ 2011-03-25 10:02 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #14 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-03-25 09:20:35 UTC ---
FWIW, my patch just fixed the expansion of commutative operations.
movmisalign and vector extractions are handled by two separate
pieces of code, so I don't think my patch would affect the two
problems that Andrew identified.
I agree with Mike that both patches look good and are still needed.
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: dominiq at lps dot ens.fr @ 2011-03-30 22:39 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #15 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-03-30 21:42:39 UTC ---
Test results with the patches in comment #5 and #6 posted at
http://gcc.gnu.org/ml/gcc-testresults/2011-03/msg02627.html and
http://gcc.gnu.org/ml/gcc-testresults/2011-03/msg02983.html with no new
regression. Could the patches be committed?
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
` (14 preceding siblings ...)
2011-03-30 22:39 ` dominiq at lps dot ens.fr
@ 2011-03-31 19:07 ` meissner at gcc dot gnu.org
2011-03-31 19:13 ` meissner at linux dot vnet.ibm.com
2011-04-01 18:46 ` meissner at gcc dot gnu.org
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From: meissner at gcc dot gnu.org @ 2011-03-31 19:07 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #16 from Michael Meissner <meissner at gcc dot gnu.org> 2011-03-31 18:38:41 UTC ---
Created attachment 23841
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23841
Patch to fix the problem, originally from Andrew Pinski
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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From: meissner at linux dot vnet.ibm.com @ 2011-03-31 19:13 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #17 from Michael Meissner <meissner at linux dot vnet.ibm.com> 2011-03-31 18:43:44 UTC ---
On Wed, Mar 30, 2011 at 09:43:05PM +0000, dominiq at lps dot ens.fr wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48262
>
> --- Comment #15 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-03-30 21:42:39 UTC ---
> Test results with the patches in comment #5 and #6 posted at
> http://gcc.gnu.org/ml/gcc-testresults/2011-03/msg02627.html and
> http://gcc.gnu.org/ml/gcc-testresults/2011-03/msg02983.html with no new
> regression. Could the patches be committed?
>
> --
> Configure bugmail: http://gcc.gnu.org/bugzilla/userprefs.cgi?tab=email
> ------- You are receiving this mail because: -------
> You reported the bug.
I was hoping Andrew would submit the patches. I just sent them out, for
review:
http://gcc.gnu.org/ml/gcc-patches/2011-03/msg02249.html
^ permalink raw reply [flat|nested] 19+ messages in thread
* [Bug target/48262] [4.7 Regression] Subversion id 171341 breaks various vectorization files on powerpc
2011-03-23 23:13 [Bug regression/48262] New: Subversion id 171341 breaks various vectorization files on powerpc meissner at gcc dot gnu.org
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2011-03-31 19:13 ` meissner at linux dot vnet.ibm.com
@ 2011-04-01 18:46 ` meissner at gcc dot gnu.org
17 siblings, 0 replies; 19+ messages in thread
From: meissner at gcc dot gnu.org @ 2011-04-01 18:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48262
Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #18 from Michael Meissner <meissner at gcc dot gnu.org> 2011-04-01 18:46:13 UTC ---
Fixed in subversion id 171847
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