[Bug tree-optimization/36792] New: [4.4 Regression] Revision 137631 causes many failures

[Bug tree-optimization/36792] New: [4.4 Regression] Revision 137631 causes many failures

[hjl dot tools at gmail dot com]

Revision 137631:

http://gcc.gnu.org/ml/gcc-patches/2008-07/msg00430.html

may have caused

FAIL: gcc.dg/tree-ssa/data-dep-1.c scan-tree-dump-times ltrans "4, \\+, 1" 0
FAIL: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Inserted .* &a"
FAIL: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Replaced
tmp1_.\\(D\\)->data"
FAIL: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Inserted .* &a"
FAIL: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Replaced tmp1.data"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Inserted pretmp" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.f with
pretmp" 3
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.k with
j" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump fre "=
VIEW_CONVERT_EXPR<float>\\(j_"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump optimized "return j"
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Replaced u.f with
pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Inserted pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Eliminated: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Insertions: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-pre-15.c scan-tree-dump optimized "= 0;"
FAIL: gcc.dg/vect/vect-67.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/no-scevccp-outer-13.c scan-tree-dump-times vect "OUTER LOOP
VECTORIZED." 1
FAIL: gcc.dg/vect/no-scevccp-outer-7.c scan-tree-dump-times vect "OUTER LOOP
VECTORIZED." 1
FAIL: Array_3 -O3 execution - source compiled test
FAIL: Array_3 -O3 -findirect-dispatch execution - source compiled test
FAIL: 23_containers/vector/check_construct_destroy.cc (test for excess errors)
FAIL: ext/pb_ds/regression/trie_no_data_map_rand.cc execution test


-- 
           Summary: [4.4 Regression] Revision 137631 causes many failures
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2008-07-10 14:59 -------
Confirmed.  I'll address the fre stuff.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |missed-optimization
   Last reconfirmed|0000-00-00 00:00:00         |2008-07-10 14:59:59
               date|                            |
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[hjl dot tools at gmail dot com]

------- Comment #2 from hjl dot tools at gmail dot com  2008-07-11 18:19 -------
Some of regressions are run-time failures. As of revision 137717,
there are still:

FAIL: Array_3 -O3 execution - source compiled test
FAIL: Array_3 -O3 -findirect-dispatch execution - source compiled test
FAIL: ext/pb_ds/regression/trie_data_map_rand.cc execution test

on both Linux/ia32 and Linux/x86-64.


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|missed-optimization         |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[dberlin at dberlin dot org]

------- Comment #3 from dberlin at gcc dot gnu dot org  2008-07-11 19:15 -------
Subject: Re:  [4.4 Regression] Revision 137631 causes many failures

I am working on the one x86_64 specific failure first :)


On Fri, Jul 11, 2008 at 2:19 PM, hjl dot tools at gmail dot com
<gcc-bugzilla@gcc.gnu.org> wrote:
>
>
> ------- Comment #2 from hjl dot tools at gmail dot com  2008-07-11 18:19 -------
> Some of regressions are run-time failures. As of revision 137717,
> there are still:
>
> FAIL: Array_3 -O3 execution - source compiled test
> FAIL: Array_3 -O3 -findirect-dispatch execution - source compiled test
> FAIL: ext/pb_ds/regression/trie_data_map_rand.cc execution test
>
> on both Linux/ia32 and Linux/x86-64.
>
>
> --
>
> hjl dot tools at gmail dot com changed:
>
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>           Keywords|missed-optimization         |
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792
>
> ------- You are receiving this mail because: -------
> You are on the CC list for the bug, or are watching someone who is.
>


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2008-07-17 15:55 -------
Subject: Bug 36792

Author: rguenth
Date: Thu Jul 17 15:54:27 2008
New Revision: 137927

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=137927
Log:
2008-07-16  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/36792
        * tree-ssa-pre.c (get_or_alloc_expr_for): Handle unary
        expressions inserted by SCCVN.
        (do_SCCVN_insertion): Adjust comment.
        (execute_pre): Allow insertion for FRE again.

        * tree-ssa-sccvn.c (simplify_unary_expression): Deal with
        the GIMPLE_SINGLE_RHS statemens we get.
        (init_scc_vn): Init VN_INFO->expr to NULL.

Modified:
    branches/gimple-tuples-branch/gcc/ChangeLog.tuples
    branches/gimple-tuples-branch/gcc/tree-ssa-pre.c
    branches/gimple-tuples-branch/gcc/tree-ssa-sccvn.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[hjl dot tools at gmail dot com]

------- Comment #5 from hjl dot tools at gmail dot com  2008-07-20 01:11 -------
As of revision 137991, the following regressions remain on Linux/x86-64:

FAIL: gcc.dg/tree-ssa/data-dep-1.c scan-tree-dump-times ltrans "4, \\+, 1" 0
FAIL: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Inserted .* &a"
FAIL: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Replaced
tmp1_.\\(D\\)->data"
FAIL: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Inserted .* &a"
FAIL: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Replaced tmp1.data"
FAIL: gcc.dg/tree-ssa/ssa-fre-17.c scan-tree-dump fre "Replaced
f.doms\\[0\\].dom with i_"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Inserted pretmp" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.f with
pretmp" 3
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.k with
j" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump fre "=
VIEW_CONVERT_EXPR<float>\\(j_"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump optimized "return j"
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Replaced u.f with
pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Inserted pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Eliminated: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Insertions: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-pre-15.c scan-tree-dump optimized "= 0;"
FAIL: gcc.dg/vect/vect-67.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/no-scevccp-outer-13.c scan-tree-dump-times vect "OUTER LOOP
VECTORIZED." 1
FAIL: gcc.dg/vect/no-scevccp-outer-7.c scan-tree-dump-times vect "OUTER LOOP
VECTORIZED." 1
FAIL: Array_3 -O3 execution - source compiled test
FAIL: Array_3 -O3 -findirect-dispatch execution - source compiled test
FAIL: ext/pb_ds/regression/trie_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/trie_no_data_map_rand.cc execution test


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[hutchinsonandy at gcc dot gnu dot org]

------- Comment #6 from hutchinsonandy at gcc dot gnu dot org  2008-07-20 13:57 -------
Similarly Platform: avr-unknown-none

4.4.0 20080718 (experimental) [trunk revision 137967]

FAIL: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Inserted .* &a"
FAIL: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Replaced
tmp1_.\\(D\\)->data"
FAIL: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Inserted .* &a"
FAIL: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Replaced tmp1.data"
FAIL: gcc.dg/tree-ssa/ssa-fre-17.c scan-tree-dump fre "Replaced
f.doms\\[0\\].dom with i_"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Inserted pretmp" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.f with
pretmp" 3
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.k with
j" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump fre "=
VIEW_CONVERT_EXPR<float>\\(j_"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump optimized "return j"
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Replaced u.f with
pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Inserted pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Eliminated: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Insertions: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-pre-15.c scan-tree-dump optimized "= 0;"


-- 

hutchinsonandy at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hutchinsonandy at gcc dot
                   |                            |gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2008-07-28 15:35 -------
They have been all XFAILed, with the tuples merge we now get

XPASS: gcc.dg/tree-ssa/data-dep-1.c scan-tree-dump-times ltrans "4, \\+, 1" 0
XPASS: gcc.dg/tree-ssa/ltrans-3.c scan-tree-dump-times ltrans "transformed
loop" 1
XPASS: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Inserted .* &a"
XPASS: gcc.dg/tree-ssa/ssa-fre-13.c scan-tree-dump fre "Replaced
tmp1_.\\(D\\)->data"
XPASS: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Inserted .* &a"
XPASS: gcc.dg/tree-ssa/ssa-fre-14.c scan-tree-dump fre "Replaced tmp1.data"
XPASS: gcc.dg/tree-ssa/ssa-fre-17.c scan-tree-dump fre "Replaced
f.doms\\[0\\].dom with i_"

instead which leaves

FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Inserted pretmp" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.f with
pretmp" 3
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump-times fre "Replaced a.u.k with
j" 1
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump fre "=
VIEW_CONVERT_EXPR<float>\\(j_"
FAIL: gcc.dg/tree-ssa/ssa-fre-7.c scan-tree-dump optimized "return j"
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Replaced u.f with
pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-8.c scan-tree-dump-times fre "Inserted pretmp" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Eliminated: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-fre-9.c scan-tree-dump-times fre "Insertions: 1" 2
FAIL: gcc.dg/tree-ssa/ssa-pre-15.c scan-tree-dump optimized "= 0;"

unfixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |xfail


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[hjl dot tools at gmail dot com]

------- Comment #8 from hjl dot tools at gmail dot com  2008-08-17 19:33 -------
Intermittent failures:

FAIL: ext/pb_ds/regression/trie_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/trie_no_data_map_rand.cc execution test

is due to PR 37144.


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |37144
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[hjl dot tools at gmail dot com]

------- Comment #9 from hjl dot tools at gmail dot com  2008-12-07 01:13 -------
Those 3 still aren't fixed:

FAIL: gcc.dg/vect/vect-67.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/no-scevccp-outer-13.c scan-tree-dump-times vect "OUTER LOOP
VECTORIZED." 1
FAIL: gcc.dg/vect/no-scevccp-outer-7.c scan-tree-dump-times vect "OUTER LOOP
VECTORIZED." 1

See

http://gcc.gnu.org/ml/gcc-testresults/2008-12/msg00654.html


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[dominiq at lps dot ens dot fr]

------- Comment #10 from dominiq at lps dot ens dot fr  2008-12-07 10:35 -------
> Those 3 still aren't fixed:
>
> FAIL: gcc.dg/vect/vect-67.c scan-tree-dump-times vect "vectorized 1 loops" 1

see pr37853#2 for the output of -ftree-vectorizer-verbose=6.

> FAIL: gcc.dg/vect/no-scevccp-outer-13.c scan-tree-dump-times vect "OUTER LOOP
> VECTORIZED." 1
> FAIL: gcc.dg/vect/no-scevccp-outer-7.c scan-tree-dump-times vect "OUTER LOOP
> VECTORIZED." 1

For these two failures the output of -ftree-vectorizer-verbose=6 are similar.
no-scevccp-outer-7.c gives:

/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_store_cost: inside_cost = 1, outside_cost = 1 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_load_cost: aligned.
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_load_cost: inside_cost = 1, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_load_cost: aligned.
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_load_cost: inside_cost = 1, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_simple_cost: inside_cost = 2, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
vect_model_simple_cost: inside_cost = 2, outside_cost = 1 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:19: note:
not vectorized: relevant stmt not supported: D.2045_21 = D.2043_18 >>
D.2044_20;

/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:13: note:
vectorized 0 loops in function.

/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:31: note:
vectorized 0 loops in function.

/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:63: note:
not vectorized: too many BBs in loop.
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_induction_cost: inside_cost = 2, outside_cost = 2 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_simple_cost: inside_cost = 1, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_simple_cost: inside_cost = 1, outside_cost = 1 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_store_cost: inside_cost = 1, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_simple_cost: inside_cost = 1, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_store_cost: inside_cost = 1, outside_cost = 0 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
vect_model_simple_cost: inside_cost = 2, outside_cost = 1 .
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
Cost model analysis: 
  Vector inside of loop cost: 7
  Vector outside of loop cost: 2
  Scalar iteration cost: 6
  Scalar outside cost: 0
  prologue iterations: 0
  epilogue iterations: 0
  Calculated minimum iters for profitability: 1

/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:  
Profitability threshold = 7

/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:53: note:
LOOP VECTORIZED.
/opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c:44: note:
vectorized 1 loops in function.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #11 from rguenth at gcc dot gnu dot org  2008-12-07 12:25 -------
*** Bug 37853 has been marked as a duplicate of this bug. ***


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sje at cup dot hp dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[dberlin at gcc dot gnu dot org]

------- Comment #12 from dberlin at gcc dot gnu dot org  2008-12-10 20:15 -------
Subject: Bug 36792

Author: dberlin
Date: Wed Dec 10 20:13:39 2008
New Revision: 142659

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142659
Log:
2008-12-10  Daniel Berlin  <dberlin@dberlin.org>

        PR tree-optimization/36792
        * tree-ssa-pre.c (compute_avail): Don't insert defs into maximal
        set.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c
    trunk/gcc/tree-ssa-pre.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #13 from rguenth at gcc dot gnu dot org  2008-12-10 20:38 -------
All fixed now apart from

FAIL: gcc.dg/vect/vect-67.c scan-tree-dump-times vect "vectorized 1 loops" 1


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|xfail                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #14 from rguenth at gcc dot gnu dot org  2008-12-10 20:56 -------
Which is not vectorized because PRE doesn't move the invariant

  D.2067_11 = a_9(D) == b_10(D);

out of the loop.  If you make LIM do it (--param lim-expensive=1) the loop
is vectorized again.

I have a patch.


-- 

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|REOPENED                    |ASSIGNED
   Last reconfirmed|2008-07-10 14:59:59         |2008-12-10 20:56:16
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #16 from rguenth at gcc dot gnu dot org  2008-12-10 22:18 -------
Subject: Bug 36792

Author: rguenth
Date: Wed Dec 10 22:17:05 2008
New Revision: 142662

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142662
Log:
2008-12-10  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/36792
        * tree-ssa-pre.c (compute_avail): Handle tcc_comparison like
        tcc_binary.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-pre.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36792

[Bug tree-optimization/36792] [4.4 Regression] Revision 137631 causes many failures

[rguenth at gcc dot gnu dot org]

------- Comment #15 from rguenth at gcc dot gnu dot org  2008-12-10 22:17 -------
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=36792