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* [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp
@ 2011-10-17 18:10 zsojka at seznam dot cz
  2011-10-17 19:25 ` [Bug tree-optimization/50763] " zsojka at seznam dot cz
                   ` (22 more replies)
  0 siblings, 23 replies; 24+ messages in thread
From: zsojka at seznam dot cz @ 2011-10-17 18:10 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

             Bug #: 50763
           Summary: [4.7 Regression] ICE: verify_gimple failed: missing
                    PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop
                    -fno-tree-vrp
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
                CC: vries@gcc.gnu.org
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 25527
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25527
reduced testcase

Compiler output:
$ gcc -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp testcase.c
testcase.c: In function 'f':
testcase.c:6:5: warning: incompatible implicit declaration of built-in function
'exp' [enabled by default]
testcase.c:3:6: error: missing PHI def
.MEM_9 = PHI <.MEM_4(D)(2), .MEM_5(5), (4)>

testcase.c:3:6: internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Might be related to -ftree-tail-merge, as it doesn't crash with
-fno-tree-tail-merge.

Tested revisions:
r180072 - crash
r179959 - crash
r178498 - OK
4.6 r177922 - OK


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
@ 2011-10-17 19:25 ` zsojka at seznam dot cz
  2011-10-17 19:54 ` [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge vries at gcc dot gnu.org
                   ` (21 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: zsojka at seznam dot cz @ 2011-10-17 19:25 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2011-10-17 19:24:38 UTC ---
Created attachment 25530
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25530
simpler testcase

Might be the same problem:
$ gcc -O2 -fno-tree-dominator-opts testcase2.c                   
testcase2.c: In function 'foo':
testcase2.c:4:1: error: missing PHI def
.MEM_4 = PHI <.MEM_6(7), .MEM_7(3), (8)>

testcase2.c:4:1: internal compiler error: verify_gimple failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

-fno-tree-tail-merge helps in this case as well


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
  2011-10-17 19:25 ` [Bug tree-optimization/50763] " zsojka at seznam dot cz
@ 2011-10-17 19:54 ` vries at gcc dot gnu.org
  2011-10-17 22:00 ` vries at gcc dot gnu.org
                   ` (20 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-17 19:54 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011-10-17
         AssignedTo|unassigned at gcc dot       |vries at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
  2011-10-17 19:25 ` [Bug tree-optimization/50763] " zsojka at seznam dot cz
  2011-10-17 19:54 ` [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge vries at gcc dot gnu.org
@ 2011-10-17 22:00 ` vries at gcc dot gnu.org
  2011-10-18  9:56 ` rguenth at gcc dot gnu.org
                   ` (19 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-17 22:00 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #2 from vries at gcc dot gnu.org 2011-10-17 21:59:29 UTC ---
Created attachment 25536
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25536
tentative patch


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (2 preceding siblings ...)
  2011-10-17 22:00 ` vries at gcc dot gnu.org
@ 2011-10-18  9:56 ` rguenth at gcc dot gnu.org
  2011-10-18 11:12 ` vries at gcc dot gnu.org
                   ` (18 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-10-18  9:56 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-18 09:54:47 UTC ---
Confirmed.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (3 preceding siblings ...)
  2011-10-18  9:56 ` rguenth at gcc dot gnu.org
@ 2011-10-18 11:12 ` vries at gcc dot gnu.org
  2011-10-18 17:15 ` vries at gcc dot gnu.org
                   ` (17 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-18 11:12 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #4 from vries at gcc dot gnu.org 2011-10-18 11:12:32 UTC ---
Created attachment 25541
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25541
patch, handles case that either vuse1 or vuse2 is NULL_TREE in update_vuses.

Currently testing on x86_64.

2011-10-18  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * tree-ssa-tail-merge.c (update_vuses): Add and use vuse1_phi_args
    argument.  Set var to SSA_NAME_VAR of vuse1 or vuse2, and use var.
    Handle case that def_stmt2 is NULL.  Use phi result as phi arg in case
    vuse1 or vuse2 is NULL_TREE.  Replace uses of vuse1 if vuse2 is
    NULL_TREE.  Remove code to limit replacement of uses.
    (replace_block_by): Update vops if phi_vuse1 or phi_vuse2 is NULL_TREE.
    Set vuse1_phi_args if vuse1 is a phi defined in bb1. Add vuse1_phi_args
    as argument to call to update_vuses.

    * gcc.dg/pr50763.c: New test.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (4 preceding siblings ...)
  2011-10-18 11:12 ` vries at gcc dot gnu.org
@ 2011-10-18 17:15 ` vries at gcc dot gnu.org
  2011-10-19 15:48 ` vries at gcc dot gnu.org
                   ` (16 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-18 17:15 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #5 from vries at gcc dot gnu.org 2011-10-18 17:14:28 UTC ---
Created attachment 25545
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25545
updated patch


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (5 preceding siblings ...)
  2011-10-18 17:15 ` vries at gcc dot gnu.org
@ 2011-10-19 15:48 ` vries at gcc dot gnu.org
  2011-10-23 16:06 ` vries at gcc dot gnu.org
                   ` (15 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-19 15:48 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #6 from vries at gcc dot gnu.org 2011-10-19 15:48:38 UTC ---
Created attachment 25556
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25556
Updated patch, tries to keep dominance info up-to-date.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (6 preceding siblings ...)
  2011-10-19 15:48 ` vries at gcc dot gnu.org
@ 2011-10-23 16:06 ` vries at gcc dot gnu.org
  2011-10-23 16:07 ` vries at gcc dot gnu.org
                   ` (14 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-23 16:06 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #7 from vries at gcc dot gnu.org 2011-10-23 16:06:38 UTC ---
Author: vries
Date: Sun Oct 23 16:06:32 2011
New Revision: 180341

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180341
Log:
2011-10-23  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * tree-ssa-tail-merge.c (same_succ_flush_bb): New function, factored out
    of ...
    (same_succ_flush_bbs): Use same_succ_flush_bb.
    (purge_bbs): Remove argument.  Remove calls to same_succ_flush_bbs,
    release_last_vdef and delete_basic_block.
    (unlink_virtual_phi): New function.
    (update_vuses): Add and use vuse1_phi_args argument.  Set var to
    SSA_NAME_VAR of vuse1 or vuse2, and use var.  Handle case that def_stmt2
    is NULL.  Use phi result as phi arg in case vuse1 or vuse2 is NULL_TREE.
    Replace uses of vuse1 if vuse2 is NULL_TREE.  Fix code to limit
    replacement of uses.  Propagate phi argument for phis with a single
    argument.
    (replace_block_by): Update vops if phi_vuse1 or phi_vuse2 is NULL_TREE.
    Set vuse1_phi_args if vuse1 is a phi defined in bb1.  Add vuse1_phi_args
    as argument to call to update_vuses.  Call release_last_vdef,
    same_succ_flush_bb, delete_basic_block.  Update CDI_DOMINATORS info.
    (tail_merge_optimize): Remove argument in call to purge_bbs.  Remove
    call to free_dominance_info.  Only call calculate_dominance_info once.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-tail-merge.c


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (7 preceding siblings ...)
  2011-10-23 16:06 ` vries at gcc dot gnu.org
@ 2011-10-23 16:07 ` vries at gcc dot gnu.org
  2011-10-23 16:08 ` vries at gcc dot gnu.org
                   ` (13 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-23 16:07 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #8 from vries at gcc dot gnu.org 2011-10-23 16:06:46 UTC ---
Author: vries
Date: Sun Oct 23 16:06:40 2011
New Revision: 180342

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180342
Log:
2011-10-23  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * gcc.dg/pr50763.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr50763.c
Modified:
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (8 preceding siblings ...)
  2011-10-23 16:07 ` vries at gcc dot gnu.org
@ 2011-10-23 16:08 ` vries at gcc dot gnu.org
  2011-10-24 10:39 ` belyshev at depni dot sinp.msu.ru
                   ` (12 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-23 16:08 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

vries at gcc dot gnu.org changed:

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

--- Comment #9 from vries at gcc dot gnu.org 2011-10-23 16:08:20 UTC ---
checked in patch and test-case, marking PR fixed.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (9 preceding siblings ...)
  2011-10-23 16:08 ` vries at gcc dot gnu.org
@ 2011-10-24 10:39 ` belyshev at depni dot sinp.msu.ru
  2011-10-24 10:59 ` vries at gcc dot gnu.org
                   ` (11 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: belyshev at depni dot sinp.msu.ru @ 2011-10-24 10:39 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |belyshev at depni dot
                   |                            |sinp.msu.ru

--- Comment #10 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> 2011-10-24 10:39:07 UTC ---
The commit r180341 breaks i686 bootstrap for me with verify_ssa failure. Here
is a reduced testcase, fails also on x86_64, compile with -O2:

------------------------------------------------------------------------------
typedef union tree_node *tree;

struct tree_base
{
  int code;
};

struct tree_typed
{
  struct tree_base base;
  tree type;
};

struct tree_common
{
  struct tree_typed typed;
};

struct tree_type_common
{
  tree main_variant;
};

union tree_node
{
  struct tree_base base;
  struct tree_typed typed;
  struct tree_type_common type_common;
};

int std_canonical_va_list_type (tree type) 
{
  if (type->base.code)
    type = type->typed.type;
  else
    if (type->typed.type->base.code)
      type = type->typed.type;

  if (type->type_common.main_variant)
    return 1;

  return 0;
}
------------------------------------------------------------------------------
bug.c: In function 'std_canonical_va_list_type':
bug.c:31:5: error: definition in block 3 does not dominate use in block 4
for SSA_NAME: .MEM_18 in statement:
.MEM_18 = PHI <.MEM_12(D)(2), .MEM_18(4)>
PHI argument
.MEM_18
for PHI node
.MEM_18 = PHI <.MEM_12(D)(2), .MEM_18(4)>
bug.c:31:5: internal compiler error: verify_ssa failed


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (10 preceding siblings ...)
  2011-10-24 10:39 ` belyshev at depni dot sinp.msu.ru
@ 2011-10-24 10:59 ` vries at gcc dot gnu.org
  2011-10-24 12:07 ` vries at gcc dot gnu.org
                   ` (10 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-24 10:59 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

vries at gcc dot gnu.org changed:

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

--- Comment #11 from vries at gcc dot gnu.org 2011-10-24 10:59:24 UTC ---
reopened due to comment 10.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (11 preceding siblings ...)
  2011-10-24 10:59 ` vries at gcc dot gnu.org
@ 2011-10-24 12:07 ` vries at gcc dot gnu.org
  2011-10-26  0:16 ` belyshev at depni dot sinp.msu.ru
                   ` (9 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-24 12:07 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #12 from vries at gcc dot gnu.org 2011-10-24 12:06:19 UTC ---
Created attachment 25590
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25590
proposed patch for problem reported in comment 10

2011-10-24  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * tree-ssa-tail-merge.c (replace_block_by): Update vops if phi_vuse1 or
    phi_vuse2 is NULL_TREE only if bb1 dominates or is dominated by bb2.

    * gcc.dg/pr50763-2.c: New test.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (12 preceding siblings ...)
  2011-10-24 12:07 ` vries at gcc dot gnu.org
@ 2011-10-26  0:16 ` belyshev at depni dot sinp.msu.ru
  2011-10-26  9:34 ` vries at gcc dot gnu.org
                   ` (8 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: belyshev at depni dot sinp.msu.ru @ 2011-10-26  0:16 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl.tools at gmail dot com

--- Comment #13 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> 2011-10-26 00:15:02 UTC ---
*** Bug 50867 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (13 preceding siblings ...)
  2011-10-26  0:16 ` belyshev at depni dot sinp.msu.ru
@ 2011-10-26  9:34 ` vries at gcc dot gnu.org
  2011-10-26  9:35 ` vries at gcc dot gnu.org
                   ` (7 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-26  9:34 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #15 from vries at gcc dot gnu.org 2011-10-26 09:34:00 UTC ---
Author: vries
Date: Wed Oct 26 09:33:56 2011
New Revision: 180519

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180519
Log:
2011-10-26  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * gcc.dg/pr50763-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr50763-2.c
Modified:
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (14 preceding siblings ...)
  2011-10-26  9:34 ` vries at gcc dot gnu.org
@ 2011-10-26  9:35 ` vries at gcc dot gnu.org
  2011-10-26  9:46 ` vries at gcc dot gnu.org
                   ` (6 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-26  9:35 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #14 from vries at gcc dot gnu.org 2011-10-26 09:33:52 UTC ---
Author: vries
Date: Wed Oct 26 09:33:49 2011
New Revision: 180518

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180518
Log:
2011-10-26  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * tree-ssa-tail-merge.c (replace_block_by): Update vops if phi_vuse1 or
    phi_vuse2 is NULL_TREE only if bb1 dominates or is dominated by bb2.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-tail-merge.c


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (15 preceding siblings ...)
  2011-10-26  9:35 ` vries at gcc dot gnu.org
@ 2011-10-26  9:46 ` vries at gcc dot gnu.org
  2011-10-27  7:21 ` belyshev at depni dot sinp.msu.ru
                   ` (5 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-26  9:46 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

vries at gcc dot gnu.org changed:

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

--- Comment #16 from vries at gcc dot gnu.org 2011-10-26 09:45:30 UTC ---
Checked in patch and test-case for problem in comment 10, marking PR fixed.


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (16 preceding siblings ...)
  2011-10-26  9:46 ` vries at gcc dot gnu.org
@ 2011-10-27  7:21 ` belyshev at depni dot sinp.msu.ru
  2011-10-27  9:06 ` vries at gcc dot gnu.org
                   ` (4 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: belyshev at depni dot sinp.msu.ru @ 2011-10-27  7:21 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |maxdeliso at gmail dot com

--- Comment #17 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> 2011-10-27 07:21:11 UTC ---
*** Bug 50850 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (17 preceding siblings ...)
  2011-10-27  7:21 ` belyshev at depni dot sinp.msu.ru
@ 2011-10-27  9:06 ` vries at gcc dot gnu.org
  2011-10-27  9:10 ` vries at gcc dot gnu.org
                   ` (3 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-27  9:06 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mario-baumann at web dot de

--- Comment #18 from vries at gcc dot gnu.org 2011-10-27 09:05:04 UTC ---
*** Bug 50854 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (18 preceding siblings ...)
  2011-10-27  9:06 ` vries at gcc dot gnu.org
@ 2011-10-27  9:10 ` vries at gcc dot gnu.org
  2011-11-02 18:03 ` vries at gcc dot gnu.org
                   ` (2 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-10-27  9:10 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

vries at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cas43 at cs dot
                   |                            |stanford.edu

--- Comment #19 from vries at gcc dot gnu.org 2011-10-27 09:05:30 UTC ---
*** Bug 50851 has been marked as a duplicate of this bug. ***


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (19 preceding siblings ...)
  2011-10-27  9:10 ` vries at gcc dot gnu.org
@ 2011-11-02 18:03 ` vries at gcc dot gnu.org
  2011-11-04 10:58 ` vries at gcc dot gnu.org
  2011-11-04 11:46 ` vries at gcc dot gnu.org
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-11-02 18:03 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #20 from vries at gcc dot gnu.org 2011-11-02 18:01:25 UTC ---
Author: vries
Date: Wed Nov  2 18:01:18 2011
New Revision: 180785

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180785
Log:
2011-11-02  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * g++.dg/pr50763-3.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/pr50763-3.C
Modified:
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (20 preceding siblings ...)
  2011-11-02 18:03 ` vries at gcc dot gnu.org
@ 2011-11-04 10:58 ` vries at gcc dot gnu.org
  2011-11-04 11:46 ` vries at gcc dot gnu.org
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-11-04 10:58 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #21 from vries at gcc dot gnu.org 2011-11-04 10:56:44 UTC ---
Author: vries
Date: Fri Nov  4 10:56:39 2011
New Revision: 180936

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180936
Log:
2011-11-04  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * g++.dg/pr50763-4.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/pr50763-4.C
Modified:
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 24+ messages in thread
* [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge
  2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
                   ` (21 preceding siblings ...)
  2011-11-04 10:58 ` vries at gcc dot gnu.org
@ 2011-11-04 11:46 ` vries at gcc dot gnu.org
  22 siblings, 0 replies; 24+ messages in thread
From: vries at gcc dot gnu.org @ 2011-11-04 11:46 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50763

--- Comment #22 from vries at gcc dot gnu.org 2011-11-04 11:44:57 UTC ---
Author: vries
Date: Fri Nov  4 11:44:50 2011
New Revision: 180940

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=180940
Log:
2011-11-04  Tom de Vries  <tom@codesourcery.com>

    PR tree-optimization/50763
    * gcc.dg/pr50763-5.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr50763-5.c
Modified:
    trunk/gcc/testsuite/ChangeLog


^ permalink raw reply	[flat|nested] 24+ messages in thread
end of thread, other threads:[~2011-11-04 11:46 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-10-17 18:10 [Bug tree-optimization/50763] New: [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -O2 -fno-tree-ccp -fno-tree-copy-prop -fno-tree-vrp zsojka at seznam dot cz
2011-10-17 19:25 ` [Bug tree-optimization/50763] " zsojka at seznam dot cz
2011-10-17 19:54 ` [Bug tree-optimization/50763] [4.7 Regression] ICE: verify_gimple failed: missing PHI def with -ftree-tail-merge vries at gcc dot gnu.org
2011-10-17 22:00 ` vries at gcc dot gnu.org
2011-10-18  9:56 ` rguenth at gcc dot gnu.org
2011-10-18 11:12 ` vries at gcc dot gnu.org
2011-10-18 17:15 ` vries at gcc dot gnu.org
2011-10-19 15:48 ` vries at gcc dot gnu.org
2011-10-23 16:06 ` vries at gcc dot gnu.org
2011-10-23 16:07 ` vries at gcc dot gnu.org
2011-10-23 16:08 ` vries at gcc dot gnu.org
2011-10-24 10:39 ` belyshev at depni dot sinp.msu.ru
2011-10-24 10:59 ` vries at gcc dot gnu.org
2011-10-24 12:07 ` vries at gcc dot gnu.org
2011-10-26  0:16 ` belyshev at depni dot sinp.msu.ru
2011-10-26  9:34 ` vries at gcc dot gnu.org
2011-10-26  9:35 ` vries at gcc dot gnu.org
2011-10-26  9:46 ` vries at gcc dot gnu.org
2011-10-27  7:21 ` belyshev at depni dot sinp.msu.ru
2011-10-27  9:06 ` vries at gcc dot gnu.org
2011-10-27  9:10 ` vries at gcc dot gnu.org
2011-11-02 18:03 ` vries at gcc dot gnu.org
2011-11-04 10:58 ` vries at gcc dot gnu.org
2011-11-04 11:46 ` vries at gcc dot gnu.org

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