[Bug tree-optimization/21532] New: ICE caused by PRE dead instruction removal

[Bug tree-optimization/21532] New: ICE caused by PRE dead instruction removal

[drow at gcc dot gnu dot org]

The attached unreduced testcase from glibc generates an ICE using today's CVS. 
The only necessary option is -O2.

regcomp.c: In function 'build_equiv_class':
regcomp.c:3462: error: Missing definition
for SSA_NAME: pretmp.2916_545 in statement:
D.26795_433 = (<unnamed type>) pretmp.2916_545;
regcomp.c:3462: internal compiler error: verify_ssa failed.

-- 
           Summary: ICE caused by PRE dead instruction removal
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: drow at gcc dot gnu dot org
                CC: dberlin at gcc dot gnu dot org,gcc-bugs at gcc dot gnu
                    dot org,pinskia at gcc dot gnu dot org,stevenb at suse
                    dot de
GCC target triplet: arm-none-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[drow at gcc dot gnu dot org]

------- Additional Comments From drow at gcc dot gnu dot org  2005-05-12 15:31 -------
Created an attachment (id=8873)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8873&action=view)
Testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[steven at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |21520
              nThis|                            |
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-05-12 15:35:29
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[dberlin at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |dberlin at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2005-05-12 15:35:29         |2005-05-12 15:46:15
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-12 17:11 -------
Subject: Bug 21532

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dberlin@gcc.gnu.org	2005-05-12 17:11:20

Modified files:
	gcc            : ChangeLog tree-ssa-pre.c 

Log message:
	2005-05-12  Daniel Berlin  <dberlin@dberlin.org>
	
	Fix PR tree-optimization/21532
	* tree-ssa-pre.c (create_expression_by_pieces): stmt
	needs to go onto the inserted_exprs list.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8746&r2=2.8747
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&r1=2.84&r2=2.85



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[dberlin at gcc dot gnu dot org]

------- Additional Comments From dberlin at gcc dot gnu dot org  2005-05-12 23:33 -------
Foxed

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-12 23:33 -------
Subject: Bug 21532

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-4_0-branch
Changes by:	dberlin@gcc.gnu.org	2005-05-12 23:33:30

Modified files:
	gcc            : ChangeLog tree-ssa-pre.c 

Log message:
	2005-05-12  Daniel Berlin  <dberlin@dberlin.org>
	
	Fix PR tree-optimization/21532
	* tree-ssa-pre.c (create_expression_by_pieces): stmt
	needs to go onto the inserted_exprs list.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.242&r2=2.7592.2.243
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-pre.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.65.4.3&r2=2.65.4.4



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532

[Bug tree-optimization/21532] ICE caused by PRE dead instruction removal

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21532