[Bug tree-optimization/20501] New: gcc.dg/vect/vect-93.c fails on ia64-hpux

[Bug tree-optimization/20501] New: gcc.dg/vect/vect-93.c fails on ia64-hpux

[jsm28 at gcc dot gnu dot org]

The new test gcc.dg/vect-93.c shows the following results on ia64-hpux on
mainline, both -mlp64 and -milp32.

FAIL: gcc.dg/vect/vect-93.c scan-tree-dump-times Alignment of access forced
using peeling 2
XPASS: gcc.dg/vect/vect-93.c scan-tree-dump-times Alignment of access forced
using peeling 3

-- 
           Summary: gcc.dg/vect/vect-93.c fails on ia64-hpux
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jsm28 at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: ia64-*-hpux11.*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501

[Bug tree-optimization/20501] gcc.dg/vect/vect-93.c fails on ia64-hpux

[dorit at il dot ibm dot com]

------- Additional Comments From dorit at il dot ibm dot com  2005-03-17 20:57 -------
can you please send the output of compiling with -fdump-tree-vect-details?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501

[Bug tree-optimization/20501] gcc.dg/vect/vect-93.c fails on ia64-hpux

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-03-18 01:32 -------
Created an attachment (id=8412)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8412&action=view)
output of compiling with -fdump-tree-vect-details

Here is the output requested, compiled with the options used by the testsuite
plus -fdump-tree-vect-details:

-O2 -ftree-vectorize -ftree-vectorizer-verbose=3 -fdump-tree-vect-stats
-fdump-tree-vect-details -milp32


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501

[Bug tree-optimization/20501] gcc.dg/vect/vect-93.c fails on ia64-hpux

[dorit at il dot ibm dot com]

------- Additional Comments From dorit at il dot ibm dot com  2005-03-20 12:26 -------
Thanks.

This patch should fix the problem (the message "Alignment of access forced 
using peeling" should not be printed when we're not going to vectorize the loop 
due to unsupported unaligned access. this patch moves the printing of this 
message to after the check that the alignment of all accesses is supported):

Index: tree-vect-analyze.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-vect-analyze.c,v
retrieving revision 2.13
diff -c -3 -p -r2.13 tree-vect-analyze.c
*** tree-vect-analyze.c 17 Mar 2005 21:08:06 -0000      2.13
--- tree-vect-analyze.c 20 Mar 2005 12:17:39 -0000
*************** vect_enhance_data_refs_alignment (loop_v
*** 1183,1190 ****
        }

        DR_MISALIGNMENT (dr0) = 0;
-       if (vect_print_dump_info (REPORT_ALIGNMENT, LOOP_LOC (loop_vinfo)))
-       fprintf (vect_dump, "Alignment of access forced using peeling.");
      }
  }

--- 1183,1188 ----
*************** vect_analyze_data_refs_alignment (loop_v
*** 1260,1265 ****
--- 1258,1266 ----
          && (vect_print_dump_info (REPORT_ALIGNMENT, LOOP_LOC (loop_vinfo))))
        fprintf (vect_dump, "Vectorizing an unaligned access.");
      }
+   if (LOOP_VINFO_UNALIGNED_DR (loop_vinfo)
+       && vect_print_dump_info (REPORT_ALIGNMENT, LOOP_LOC (loop_vinfo)))
+     fprintf (vect_dump, "Alignment of access forced using peeling.");

    return true;
  }




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501

[Bug tree-optimization/20501] gcc.dg/vect/vect-93.c fails on ia64-hpux

[dorit at il dot ibm dot com]

------- Additional Comments From dorit at il dot ibm dot com  2005-03-22 10:54 -------
patch: http://gcc.gnu.org/ml/gcc-patches/2005-03/msg02063.html

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501

[Bug tree-optimization/20501] gcc.dg/vect/vect-93.c fails on ia64-hpux

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-03-23 15:53 -------
Subject: Bug 20501

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dorit@gcc.gnu.org	2005-03-23 15:53:05

Modified files:
	gcc            : ChangeLog tree-vect-analyze.c 

Log message:
	PR tree-optimization/20501
	* tree-vect-analyze.c (vect_enhance_data_refs_alignment): Debug print
	reporting that peeling for alignment is applied moved to...
	* (vect_analyze_data_refs_alignment): Here.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7975&r2=2.7976
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-vect-analyze.c.diff?cvsroot=gcc&r1=2.13&r2=2.14



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501

[Bug tree-optimization/20501] gcc.dg/vect/vect-93.c fails on ia64-hpux

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-03-24 17:15 -------
The FAIL is fixed, I'll open a new PR for the new failures introduced at around
the same time.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20501