tree-vectorizer.c (vect_can_force_dr_alignment_p): Return false for decls that…

tree-vectorizer.c (vect_can_force_dr_alignment_p): Return false for decls that are assembled before vectorization takes place.

	* tree-vectorizer.c (vect_can_force_dr_alignment_p): Return false for
	decls that are assembled before vectorization takes place.
	(vect_compute_data_ref_alignment): Set DECL_USER_ALIGN to 1.

From-SVN: r91517

gcc/ChangeLog

+2004-11-30  Dorit Naishlos  <dorit@il.ibm.com>
+
+	PR tree-opt/18173
+	* tree-vectorizer.c (vect_can_force_dr_alignment_p): Return false for
+	decls that are assembled before vectorization takes place.
+	(vect_compute_data_ref_alignment): Set DECL_USER_ALIGN to 1.	
+
 2004-11-30  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	* passes.c (rest_of_handle_old_regalloc): Delete unreachable blocks

gcc/tree-vectorizer.c

@@ -1509,6 +1509,9 @@ vect_can_force_dr_alignment_p (tree decl, unsigned int alignment)
   if (DECL_EXTERNAL (decl))
     return false;
 
+  if (TREE_ASM_WRITTEN (decl))
+    return false;
+
   if (TREE_STATIC (decl))
     return (alignment <= MAX_OFILE_ALIGNMENT);
   else
@@ -4130,7 +4133,7 @@ vect_compute_data_ref_alignment (struct data_reference *dr,
       if (vect_debug_details (NULL))
 	fprintf (dump_file, "force alignment");
       DECL_ALIGN (base) = TYPE_ALIGN (vectype);
-      DECL_USER_ALIGN (base) = TYPE_ALIGN (vectype);
+      DECL_USER_ALIGN (base) = 1;
     }
 
   /* At this point we assume that the base is aligned, and the offset from it