[Bug target/18009] New: ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[Bug target/18009] New: ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[uros at kss-loka dot si]

This testcase:

void Parse_UV_Vect (double UV_Vect[2])
{
   double Express[4];
   int Terms;

   for(Terms=0;Terms<2;Terms++)
     UV_Vect[Terms]=Express[Terms];

}

 with 'gcc -O2 -march=pentium4 -ftree-vectorize -S err.cpp' ICEs:

err.cpp: In function `void Parse_UV_Vect(double*)':
err.cpp:1: internal compiler error: in vect_transform_stmt, at
tree-vectorizer.c:2625
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

-- 
           Summary: ICE in vect_transform_stmt, at tree-vectorizer.c:2625
                    (testcase included)
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: uros at kss-loka dot si
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: pentium4-pc-linux-gnu
  GCC host triplet: pentium4-pc-linux-gnu
GCC target triplet: pentium4-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-15 12:38 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|target                      |tree-optimization
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-15 12:38:12
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-15 13:13 -------
This is a regression from two (or three) days ago.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ICE in vect_transform_stmt, |[4.0 Regression] ICE in
                   |at tree-vectorizer.c:2625   |vect_transform_stmt, at
                   |(testcase included)         |tree-vectorizer.c:2625
                   |                            |(testcase included)
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-10-15 15:54 -------
Indeed. It works with my snapshot from 20041013. 
W. 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2004-10-15 16:47 -------
Dorit, the regression appeared with your patch
http://gcc.gnu.org/ml/gcc-cvs/2004-10/msg00922.html

Could you please have a look?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dorit at gcc dot gnu dot
                   |                            |org, reichelt at gcc dot gnu
                   |                            |dot org
           Keywords|                            |monitored


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[dorit at il dot ibm dot com]

------- Additional Comments From dorit at il dot ibm dot com  2004-10-17 17:13 -------
Subject: Re:  [4.0 Regression] ICE in vect_transform_stmt, at
 tree-vectorizer.c:2625 (testcase included)


I'm testing a patch that fixes this problem - will submit it later today (
the problem is related to updating alignment information due to loop
peeling - in the current scheme of things this update takes place too late
).

dorit



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-18 04:18 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-10/msg01421.html>.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-11-04 05:27 -------
Subject: Bug 18009

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dorit@gcc.gnu.org	2004-11-04 05:26:55

Modified files:
	gcc            : ChangeLog tree-vectorizer.h tree-vectorizer.c 

Log message:
	PR tree-optimization/18009
	* tree-vectorizer.h (enum dr_alignment_support): New type.
	(MAX_NUMBER_OF_UNALIGNED_DATA_REFS): Removed.
	(LOOP_UNALIGNED_DR): replaced with LOOP_VINFO_UNALIGNED_DR and holds a
	single data_reference (instead of a varray of references).
	* tree-vectorizer.c (new_loop_vec_info): Likewise.
	(vect_gen_niters_for_prolog_loop): Likewise.
	(vect_update_inits_of_drs): Likewise.
	
	(vect_update_inits_of_drs): Setting of DR_MISALIGNMENT moved to
	vect_enhance_data_refs_alignment.
	(vect_do_peeling_for_alignment): Likewise.
	(vect_enhance_data_refs_alignment): Decide if and by how much to peel;
	this functionality used to be in vect_analyze_data_refs_alignment.
	Also update DR_MISALIGNMENT due to peeling; this functionality used to
	be in vect_update_inits_of_drs and vect_do_peeling_for_alignment).
	(vect_analyze_data_refs_alignment): Decision on whether and by how much
	to peel moved to vect_enhance_data_refs_alignment. Call
	vect_supportable_dr_alignment.
	
	(vect_compute_data_ref_alignment): Set STMT_VINFO_VECTYPE.
	(vect_compute_data_refs_alignment): Return bool. Consider return value
	of vect_compute_data_ref_alignment and return true/false accordingly.
	(vect_enhance_data_refs_alignment): Consider return value of
	vect_compute_data_refs_alignment and return true/false accordingly.
	
	(vect_supportable_dr_alignment): New function.
	(vectorizable_store): Call vect_supportable_dr_alignment.
	(vectorizable_load): Call vect_supportable_dr_alignment. Alignment
	support checks moved from here to vect_supportable_dr_alignment.
	
	(vect_transform_loop): Avoid 80 columns overflow.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6157&r2=2.6158
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-vectorizer.h.diff?cvsroot=gcc&r1=2.6&r2=2.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-vectorizer.c.diff?cvsroot=gcc&r1=2.22&r2=2.23



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009

[Bug tree-optimization/18009] [4.0 Regression] ICE in vect_transform_stmt, at tree-vectorizer.c:2625 (testcase included)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-04 13:39 -------
Fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18009