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* [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona
@ 2007-05-17 6:35 lloyd at randombit dot net
2007-05-17 6:37 ` [Bug tree-optimization/31966] " lloyd at randombit dot net
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: lloyd at randombit dot net @ 2007-05-17 6:35 UTC (permalink / raw)
To: gcc-bugs
$ gcc-4.2.0 -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.2.0/configure --enable-languages=c,c++,objc,obj-c++
--program-suffix=-4.2.0
Thread model: posix
gcc version 4.2.0
$ gcc-4.2.0 divop.c -o divop
$ ./divop
3CBA83
$ gcc-4.2.0 -ftree-vectorize -O2 divop.c -o divop
$ ./divop
3CBA83
$ gcc-4.2.0 -ftree-vectorize -O2 -march=opteron divop.c -o divop
$ ./divop
3CBA83
$ gcc-4.2.0 -ftree-vectorize -O2 -march=nocona divop.c -o divop
$ ./divop
2B672F
This also affects GCC 4.1.1, I have not checked 4.1.2 or the 4.3 snapshots. In
addition to -march=nocona it requires -O1/-O2/-O3 (-Os does not trigger it
under 4.2.0, though it _does_ in 4.1.1).
--
Summary: Miscompiles valid code with -ftree-vectorize and -
march=nocona
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: lloyd at randombit dot net
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] Miscompiles valid code with -ftree-vectorize and -march=nocona
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
@ 2007-05-17 6:37 ` lloyd at randombit dot net
2007-06-30 22:11 ` lloyd at randombit dot net
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: lloyd at randombit dot net @ 2007-05-17 6:37 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from lloyd at randombit dot net 2007-05-17 07:36 -------
Created an attachment (id=13567)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13567&action=view)
A short testcase for bug 31966
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] Miscompiles valid code with -ftree-vectorize and -march=nocona
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
2007-05-17 6:37 ` [Bug tree-optimization/31966] " lloyd at randombit dot net
@ 2007-06-30 22:11 ` lloyd at randombit dot net
2007-07-01 8:48 ` dorit at gcc dot gnu dot org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: lloyd at randombit dot net @ 2007-06-30 22:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from lloyd at randombit dot net 2007-06-30 22:11 -------
The behavior still exists in the 4.3 20070622 snapshot. It does not occur using
-march=core2 (the actual CPU in question). The bad value results when using
-ftree-vectorize and -march or -mtune =nocona. -O, -O2, or -O3 is also
required; a binary compiled with -Os produces the correct value.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] Miscompiles valid code with -ftree-vectorize and -march=nocona
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
2007-05-17 6:37 ` [Bug tree-optimization/31966] " lloyd at randombit dot net
2007-06-30 22:11 ` lloyd at randombit dot net
@ 2007-07-01 8:48 ` dorit at gcc dot gnu dot org
2007-07-01 8:52 ` dorit at gcc dot gnu dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dorit at gcc dot gnu dot org @ 2007-07-01 8:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from dorit at gcc dot gnu dot org 2007-07-01 08:47 -------
I was able to reproduce the behavior on a Pentinum4 with a recent 4.3 snapshot.
It doesn't look like it's the vectorizer's fault - nothing gets vectorized.
However, if I disable the tree-level if-conversion (which is automatically
enabled by -ftree-vectorize) - the result of '-ftree-vectorize -O2
-march=nocona divop.c -o divop' becomes '3CBA83'.
--
dorit at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] Miscompiles valid code with -ftree-vectorize and -march=nocona
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (2 preceding siblings ...)
2007-07-01 8:48 ` dorit at gcc dot gnu dot org
@ 2007-07-01 8:52 ` dorit at gcc dot gnu dot org
2007-07-01 9:33 ` [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize ubizjak at gmail dot com
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dorit at gcc dot gnu dot org @ 2007-07-01 8:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from dorit at gcc dot gnu dot org 2007-07-01 08:52 -------
This may be related to PR32533 (also wrong-code due to tree-if-conversion).
--
dorit 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 |2007-07-01 08:52:43
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (3 preceding siblings ...)
2007-07-01 8:52 ` dorit at gcc dot gnu dot org
@ 2007-07-01 9:33 ` ubizjak at gmail dot com
2007-07-01 14:20 ` ubizjak at gmail dot com
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-01 9:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from ubizjak at gmail dot com 2007-07-01 09:33 -------
Confirmed. This is the same bug as PR32533, but this one comes with the c
testcase. The problem is in ifcvt pass.
In -march=nocona case (-march=nocona -O2 -ftree-vectorize), we have following
code before ifcvt pass:
if (high_top_bit_11 != 0)
goto <bb 5>;
else
goto <bb 4>;
<bb 4>:
if (d_7(D) <= high_19)
goto <bb 5>;
else
goto <bb 6>;
<bb 5>:
high_21 = high_19 - d_7(D);
quotient_22 = quotient_20 | 1;
<bb 6>:
# quotient_3 = PHI <quotient_20(4), quotient_22(5)>
# high_1 = PHI <high_19(4), high_21(5)>
j_23 = j_32 + 1;
This code is converted by ifcvt pass to:
quotient_20 = quotient_31 << 1; [+]
D.2068_5 = high_top_bit_11 == 0;
D.2069_4 = d_7(D) <= high_19;
_ifc_.29_2 = D.2068_5 && D.2069_4;
D.2071_29 = high_top_bit_11 == 0;
D.2072_33 = d_7(D) > high_19;
_ifc_.30_34 = D.2071_29 && D.2072_33;
high_21 = high_19 - d_7(D);
quotient_22 = quotient_20 | 1; [++]
quotient_3 = high_top_bit_11 == 0 ? quotient_20 : quotient_22; <<< here!
high_1 = high_top_bit_11 == 0 ? high_19 : high_21; <<< here!
j_23 = j_32 + 1;
The condition for quotient_3 [and high_1], produced by ifcvt pass is wrong, and
should be:
quotient_3 = _ifc_.3034 ? quotient_20 : quotient_22;
This is evident from the inner loop of the testcase:
--cut here--
{
word high_top_bit = (high & MP_WORD_TOP_BIT);
high <<= 1;
high |= (n0 >> (MP_WORD_BITS-1-j)) & 1;
quotient <<= 1; [+]
if(high_top_bit || high >= d) <<<< _the_condition_
{
high -= d;
quotient |= 1; [++]
}
}
--cut here--
Due to slighlty different gimple generation for -march=core2 (please look into
_.004t.gimple) where only if branch is created, ifcvt is able to create correct
code:
quotient_20 = quotient_34 << 1; [+]
D.2065_21 = high_top_bit_11 != 0;
D.2066_22 = high_19 >= d_7(D);
D.2067_23 = D.2065_21 || D.2066_22;
high_24 = high_19 - d_7(D);
quotient_25 = quotient_20 | 1; [++]
quotient_3 = D.2067_23 ? quotient_25 : quotient_20; <<<< here
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ubizjak at gmail dot com
Priority|P3 |P1
Summary|Miscompiles valid code with |[4.1/4.2/4.3 Regression]
|-ftree-vectorize and - |Miscompiles valid code with
|march=nocona |-ftree-vectorize
Target Milestone|--- |4.1.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (4 preceding siblings ...)
2007-07-01 9:33 ` [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize ubizjak at gmail dot com
@ 2007-07-01 14:20 ` ubizjak at gmail dot com
2007-07-01 15:46 ` ubizjak at gmail dot com
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-01 14:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from ubizjak at gmail dot com 2007-07-01 14:20 -------
In the tree-if-conv.c, there is a comment with the reference to PR23115, where
similar problems were addressed:
4) If pred B is dominated by pred A then use pred B's condition.
See PR23115. */
For attached testcase, we have following CFG:
bb3
/ \
/ \
/ \
V V
bb5 <---- bb4
\ /
\ /
\ /
V V
bb6
with the conditions:
bb3: C3 = (high_top_bit_11 != 0)
bb4: C4 = (d_7(D) <= high_19)
predicates for blocks are then:
bb4: !C3
bb5: C3 || !C3 & C4 [ = C3 || C4 ]
In bb6, we have:
# quotient_3 = PHI <quotient_20(4), quotient_22(5)>
For some reason domiated_by_p() failed to detect that bb5 is dominated by bb4
and if-conversion simply assigns bb4 predicate (!C3) as the phi node condition.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (5 preceding siblings ...)
2007-07-01 14:20 ` ubizjak at gmail dot com
@ 2007-07-01 15:46 ` ubizjak at gmail dot com
2007-07-02 14:02 ` ubizjak at gmail dot com
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-01 15:46 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from ubizjak at gmail dot com 2007-07-01 15:46 -------
Well, the problem is, that we "forgot" to take into account false branch from
bb4 to bb6. In notation form the Comment #6, this branch has the condition !C4,
so the total condition for branch from bb4 leading to bb6 would be: !C3 && !C4.
The conditions for both branches leading to phi node are then:
left: (C3 || C4) && 1 -----> C3 || C4
right: !C3 && !C4 ---------> !(C3 || C4)
With above correction, phi
# quotient_3 = PHI <quotient_20(4), quotient_22(5)>
would be substituted with:
quotient_3 = !(C3 || C4) ? quotient_20 : quotient_22;
or:
quotient_3 = (C3 || C4) ? quotient_22 : quotient_20;
which just happens to be the correct condition.
QED.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (6 preceding siblings ...)
2007-07-01 15:46 ` ubizjak at gmail dot com
@ 2007-07-02 14:02 ` ubizjak at gmail dot com
2007-07-02 14:26 ` uros at gcc dot gnu dot org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-02 14:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from ubizjak at gmail dot com 2007-07-02 14:02 -------
Patch at http://gcc.gnu.org/ml/gcc-patches/2007-07/msg00104.html
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2007-
| |07/msg00104.html
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (7 preceding siblings ...)
2007-07-02 14:02 ` ubizjak at gmail dot com
@ 2007-07-02 14:26 ` uros at gcc dot gnu dot org
2007-07-02 14:28 ` [Bug tree-optimization/31966] [4.1/4.2 " ubizjak at gmail dot com
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: uros at gcc dot gnu dot org @ 2007-07-02 14:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from uros at gcc dot gnu dot org 2007-07-02 14:26 -------
Subject: Bug 31966
Author: uros
Date: Mon Jul 2 14:26:11 2007
New Revision: 126206
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126206
Log:
PR tree-optimization/31966
PR tree-optimization/32533
* tree-if-conv.c (add_to_dst_predicate_list): Use "edge", not
"basic_block" description as its third argument. Update function
calls to get destination bb from "edge" argument. Save "cond" into
aux field of the edge. Update prototype for changed arguments.
(find_phi_replacement_condition): Operate on incoming edges, not
on predecessor blocks. If there is a condition saved in the
incoming edge aux field, AND it with incoming bb predicate.
Return source bb of the first edge.
(clean_predicate_lists): Clean aux field of outgoing node edges.
(tree_if_conversion): Do not initialize cond variable. Move
variable declaration into the loop.
(replace_phi_with_cond_gimple_modify_stmt): Remove unneded
initializations of new_stmt, arg0 and arg1 variables.
testsuite/ChangeLog:
PR tree-optimization/31966
PR tree-optimization/32533
* gcc.dg/tree-ssa/pr31966.c: New runtime test.
* gfortran.dg/pr32533.f90: Ditto.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c
trunk/gcc/testsuite/gfortran.dg/pr32533.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-if-conv.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (8 preceding siblings ...)
2007-07-02 14:26 ` uros at gcc dot gnu dot org
@ 2007-07-02 14:28 ` ubizjak at gmail dot com
2007-07-04 5:41 ` uros at gcc dot gnu dot org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-02 14:28 UTC (permalink / raw)
To: gcc-bugs
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|ubizjak at gmail dot com |
AssignedTo|unassigned at gcc dot gnu |ubizjak at gmail dot com
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2007-07-01 08:52:43 |2007-07-02 14:28:40
date| |
Summary|[4.1/4.2/4.3 Regression] |[4.1/4.2 Regression]
|Miscompiles valid code with |Miscompiles valid code with
|-ftree-vectorize |-ftree-vectorize
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (9 preceding siblings ...)
2007-07-02 14:28 ` [Bug tree-optimization/31966] [4.1/4.2 " ubizjak at gmail dot com
@ 2007-07-04 5:41 ` uros at gcc dot gnu dot org
2007-07-04 5:49 ` uros at gcc dot gnu dot org
2007-07-04 5:54 ` ubizjak at gmail dot com
12 siblings, 0 replies; 14+ messages in thread
From: uros at gcc dot gnu dot org @ 2007-07-04 5:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from uros at gcc dot gnu dot org 2007-07-04 05:41 -------
Subject: Bug 31966
Author: uros
Date: Wed Jul 4 05:40:58 2007
New Revision: 126301
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126301
Log:
PR tree-optimization/31966
PR tree-optimization/32533
* tree-if-conv.c (add_to_dst_predicate_list): Use "edge", not
"basic_block" description as its third argument. Update function
calls to get destination bb from "edge" argument. Save "cond" into
aux field of the edge. Update prototype for changed arguments.
(if_convertible_loop_p): Clear aux field of incoming edges if bb
contains phi node.
(find_phi_replacement_condition): Operate on incoming edges, not
on predecessor blocks. If there is a condition saved in the
incoming edge aux field, AND it with incoming bb predicate.
Return source bb of the first edge.
(clean_predicate_lists): Clean aux field of outgoing node edges.
(tree_if_conversion): Do not initialize cond variable. Move
variable declaration into the loop.
(replace_phi_with_cond_gimple_modify_stmt): Remove unneded
initializations of new_stmt, arg0 and arg1 variables.
testsuite/ChangeLog:
PR tree-optimization/31966
PR tree-optimization/32533
* gcc.dg/tree-ssa/pr31966.c: New runtime test.
* gfortran.dg/pr32533.f90: Ditto.
Added:
branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c
branches/gcc-4_2-branch/gcc/testsuite/gfortran.dg/pr32533.f90
Modified:
branches/gcc-4_2-branch/gcc/ChangeLog
branches/gcc-4_2-branch/gcc/testsuite/ChangeLog
branches/gcc-4_2-branch/gcc/tree-if-conv.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (10 preceding siblings ...)
2007-07-04 5:41 ` uros at gcc dot gnu dot org
@ 2007-07-04 5:49 ` uros at gcc dot gnu dot org
2007-07-04 5:54 ` ubizjak at gmail dot com
12 siblings, 0 replies; 14+ messages in thread
From: uros at gcc dot gnu dot org @ 2007-07-04 5:49 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from uros at gcc dot gnu dot org 2007-07-04 05:49 -------
Subject: Bug 31966
Author: uros
Date: Wed Jul 4 05:49:31 2007
New Revision: 126302
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126302
Log:
PR tree-optimization/31966
PR tree-optimization/32533
* tree-if-conv.c (add_to_dst_predicate_list): Use "edge", not
"basic_block" description as its third argument. Update function
calls to get destination bb from "edge" argument. Save "cond" into
aux field of the edge. Update prototype for changed arguments.
(if_convertible_loop_p): Clear aux field of incoming edges if bb
contains phi node.
(find_phi_replacement_condition): Operate on incoming edges, not
on predecessor blocks. If there is a condition saved in the
incoming edge aux field, AND it with incoming bb predicate.
Return source bb of the first edge.
(clean_predicate_lists): Clean aux field of outgoing node edges.
(tree_if_conversion): Do not initialize cond variable. Move
variable declaration into the loop.
(replace_phi_with_cond_gimple_modify_stmt): Remove unneded
initializations of new_stmt, arg0 and arg1 variables.
testsuite/ChangeLog:
PR tree-optimization/31966
PR tree-optimization/32533
* gcc.dg/tree-ssa/pr31966.c: New runtime test.
* gfortran.dg/pr32533.f90: Ditto.
Added:
branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/tree-ssa/pr31966.c
branches/gcc-4_1-branch/gcc/testsuite/gfortran.dg/pr32533.f90
Modified:
branches/gcc-4_1-branch/gcc/ChangeLog
branches/gcc-4_1-branch/gcc/testsuite/ChangeLog
branches/gcc-4_1-branch/gcc/tree-if-conv.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug tree-optimization/31966] [4.1/4.2 Regression] Miscompiles valid code with -ftree-vectorize
2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
` (11 preceding siblings ...)
2007-07-04 5:49 ` uros at gcc dot gnu dot org
@ 2007-07-04 5:54 ` ubizjak at gmail dot com
12 siblings, 0 replies; 14+ messages in thread
From: ubizjak at gmail dot com @ 2007-07-04 5:54 UTC (permalink / raw)
To: gcc-bugs
------- Comment #12 from ubizjak at gmail dot com 2007-07-04 05:54 -------
Fixed on mainline and branches.
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31966
^ permalink raw reply [flat|nested] 14+ messages in thread
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2007-05-17 6:35 [Bug tree-optimization/31966] New: Miscompiles valid code with -ftree-vectorize and -march=nocona lloyd at randombit dot net
2007-05-17 6:37 ` [Bug tree-optimization/31966] " lloyd at randombit dot net
2007-06-30 22:11 ` lloyd at randombit dot net
2007-07-01 8:48 ` dorit at gcc dot gnu dot org
2007-07-01 8:52 ` dorit at gcc dot gnu dot org
2007-07-01 9:33 ` [Bug tree-optimization/31966] [4.1/4.2/4.3 Regression] Miscompiles valid code with -ftree-vectorize ubizjak at gmail dot com
2007-07-01 14:20 ` ubizjak at gmail dot com
2007-07-01 15:46 ` ubizjak at gmail dot com
2007-07-02 14:02 ` ubizjak at gmail dot com
2007-07-02 14:26 ` uros at gcc dot gnu dot org
2007-07-02 14:28 ` [Bug tree-optimization/31966] [4.1/4.2 " ubizjak at gmail dot com
2007-07-04 5:41 ` uros at gcc dot gnu dot org
2007-07-04 5:49 ` uros at gcc dot gnu dot org
2007-07-04 5:54 ` ubizjak at gmail dot com
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