[Bug tree-optimization/31953] New: [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[Bug tree-optimization/31953] New: [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[tbm at cyrius dot com]

This worked with 4.3.0 20070422 but fails now with 20070515:

(sid)23934:tbm@em64t: ~] /usr/lib/gcc-snapshot/bin/gcc -c -O2 mc-view.i
view.c: In function 'toggle_hexedit_mode':
view.c:2045: internal compiler error: in set_value_range, at tree-vrp.c:305
Please submit a full bug report,
with preprocessed source if appropriate.


-- 
           Summary: [4.3 Regression] ICE in set_value_range, at tree-
                    vrp.c:305
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953

[Bug tree-optimization/31953] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[tbm at cyrius dot com]

------- Comment #1 from tbm at cyrius dot com  2007-05-16 15:04 -------
Reduced testcase:

struct WView
{
  int hexedit_mode:1;
};
toggle_hexedit_mode (struct WView *view)
{
  if (view->hexedit_mode)
    {
    }
  else
    {
      view->hexedit_mode = !view->hexedit_mode;
    }
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953

[Bug tree-optimization/31953] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2007-05-16 15:43 -------
Confirmed.


-- 

rguenth 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         |2007-05-16 15:43:17
               date|                            |
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953

[Bug tree-optimization/31953] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[ian at airs dot com]

------- Comment #3 from ian at airs dot com  2007-05-17 05:02 -------
Created an attachment (id=13566)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13566&action=view)
Proposed patch

I'm testing this patch.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953

[Bug tree-optimization/31953] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[ian at gcc dot gnu dot org]

------- Comment #4 from ian at gcc dot gnu dot org  2007-05-18 06:37 -------
Subject: Bug 31953

Author: ian
Date: Fri May 18 05:37:27 2007
New Revision: 124823

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=124823
Log:
./:
        PR tree-optimization/31953
        * tree-vrp.c (set_value_range_to_value): Add equiv parameter.
        Change all callers.
        (set_value_range_to_null): Call set_value_range_to_value.
        (extract_range_from_comparison): Likewise.
testsuite/:
        PR tree-optimization/31953
        * gcc.c-torture/compile/pr31953.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr31953.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953

[Bug tree-optimization/31953] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[ian at gcc dot gnu dot org]

------- Comment #5 from ian at gcc dot gnu dot org  2007-05-18 06:40 -------
Subject: Bug 31953

Author: ian
Date: Fri May 18 05:40:21 2007
New Revision: 124824

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=124824
Log:
./:
        PR tree-optimization/31953
        * tree-vrp.c (set_value_range_to_value): Add equiv parameter.
        Change all callers.
        (set_value_range_to_null): Call set_value_range_to_value.
        (extract_range_from_comparison): Likewise.
testsuite/:
        PR tree-optimization/31953
        * gcc.c-torture/compile/pr31953.c: New test.

Added:
    branches/gcc-4_2-branch/gcc/testsuite/gcc.c-torture/compile/pr31953.c
Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_2-branch/gcc/tree-vrp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953

[Bug tree-optimization/31953] [4.3 Regression] ICE in set_value_range, at tree-vrp.c:305

[ian at airs dot com]

------- Comment #6 from ian at airs dot com  2007-05-18 06:53 -------
Fixed on mainline and 4.2 branch.


-- 

ian at airs dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.3.0                       |4.2.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31953