[Bug tree-optimization/26341] New: [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[Bug tree-optimization/26341] New: [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[pinskia at gcc dot gnu dot org]

FAIL: gcc.c-torture/compile/930217-1.c  -O2  (test for excess errors)
Excess errors:
/Users/regress/tbox/svn-gcc/gcc/testsuite/gcc.c-torture/compile/930217-1.c:16:
internal compiler error: in add_virtual_operand, at tree-ssa-operands.c:1873


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           Summary: [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2
                    and above in add_virtual_operand
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
GCC target triplet: powerpc-*-darwin*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341

[Bug tree-optimization/26341] [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341

[Bug tree-optimization/26341] [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-17 14:24 -------
From:
http://gcc.gnu.org/ml/gcc-testresults/2006-02/msg00880.html

Confirmed independently also.
The testcase:
struct s
{
  int f;
};
struct s
f ()
{
  int addr;
  return *(struct s *) &addr;
}


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-17 14:24:16
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341

[Bug tree-optimization/26341] [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[dberlin at dberlin dot org]

------- Comment #2 from dberlin at gcc dot gnu dot org  2006-02-17 14:42 -------
Subject: Re:  [4.2 Regression] 930217-1.c and
        931013-3.c ICE at -O2 and above in add_virtual_operand

On Fri, 2006-02-17 at 14:24 +0000, pinskia at gcc dot gnu dot org wrote:
> 
> ------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-17 14:24 -------
> From:
> http://gcc.gnu.org/ml/gcc-testresults/2006-02/msg00880.html
> 
> Confirmed independently also.
> The testcase:
> struct s
> {
>   int f;
> };
> struct s
> f ()
> {
>   int addr;
>   return *(struct s *) &addr;
> }
> 
> 

We have a similar testcase as gcc.dg/20000623-1.c and require
no-strict-aliasing there.

I'm inclined to believe this case requires -fno-strict-aliasing as well.

I can make it stop ICE'ing, but it's not gonna work properly :)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341

[Bug tree-optimization/26341] [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[dberlin at gcc dot gnu dot org]

------- Comment #3 from dberlin at gcc dot gnu dot org  2006-02-18 00:09 -------
Subject: Bug 26341

Author: dberlin
Date: Sat Feb 18 00:09:51 2006
New Revision: 111217

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=111217
Log:
2006-02-17  Daniel Berlin  <dberlin@dberlin.org>

        Fix PR tree-optimization/26341
        * tree-ssa-operands.c (add_virtual_operand): Remove assert 
        about NAME_MEMORY_TAG's.


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


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341

[Bug tree-optimization/26341] [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2006-02-18 04:53 -------
Fixed.


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341

[Bug tree-optimization/26341] [4.2 Regression] 930217-1.c and 931013-3.c ICE at -O2 and above in add_virtual_operand

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2006-02-18 04:53 -------
Fixed.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26341