re PR tree-optimization/37955 (internal compiler error: in vectorizable_store,…

re PR tree-optimization/37955 (internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447)

2008-11-28  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/37955
	PR tree-optimization/37742
	* tree-vect-transform.c (vectorizable_store): Remove assert for
	compatible aliases.
	(vectorizable_load): Likewise.

	* gcc.c-torture/compile/pr37955.c: New testcase.
	* gcc.c-torture/compile/pr37742-3.c: Likewise.

From-SVN: r142257

gcc/ChangeLog

+2008-11-28  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/37955
+	PR tree-optimization/37742
+	* tree-vect-transform.c (vectorizable_store): Remove assert for
+	compatible aliases.
+	(vectorizable_load): Likewise.
+
 2008-11-27  Richard Guenther  <rguenther@suse.de>
 
 	* tree-ssa-structalias.c (intra_create_variable_infos): Make

gcc/testsuite/ChangeLog

+2008-11-28  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/37955
+	PR tree-optimization/37742
+	* gcc.c-torture/compile/pr37955.c: New testcase.
+	* gcc.c-torture/compile/pr37742-3.c: Likewise.
+
 2008-11-28  Jakub Jelinek  <jakub@redhat.com>
 
 	PR testsuite/38261

gcc/testsuite/gcc.c-torture/compile/pr37742-3.c

+void matmul_i4 (int * __restrict dest_y,
+		const int * __restrict abase,
+		const int * __restrict bbase_y,
+		int count, int xcount, int ycount, int aystride)
+{               
+  int x, y, n;
+  const int * __restrict abase_n;
+  int bbase_yn;
+  for (y = 0; y < ycount; y++)
+    for (n = 0; n < count; n++) {
+	abase_n = abase + n*aystride;
+	bbase_yn = bbase_y[n];
+	for (x = 0; x < xcount; x++)
+	  dest_y[x] += abase_n[x] * bbase_yn; 
+    }
+}
+

gcc/testsuite/gcc.c-torture/compile/pr37955.c

+typedef struct
+{
+  enum { NotConnected = 0 } conn_state;
+  unsigned int conn_hndl;
+} AEP_CONNECTION_ENTRY;
+
+static AEP_CONNECTION_ENTRY aep_app_conn_table[256];
+
+void aep_mod_exp (void)
+{
+  int count;
+
+  for (count = 0; count < 256; count++)
+    {
+      aep_app_conn_table[count].conn_state = NotConnected;
+      aep_app_conn_table[count].conn_hndl = 0;
+    }
+}
+

gcc/tree-vect-transform.c

@@ -5440,11 +5440,6 @@ vectorizable_store (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
 	    vec_oprnd = VEC_index (tree, result_chain, i);
 
 	  data_ref = build_fold_indirect_ref (dataref_ptr);
-	  /* If accesses through a pointer to vectype do not alias the original
-	     memory reference we have a problem.  This should never happen.  */
-	  gcc_assert (get_alias_set (data_ref) == get_alias_set (gimple_assign_lhs (stmt))
-		      || alias_set_subset_of (get_alias_set (data_ref), 
-					      get_alias_set (gimple_assign_lhs (stmt))));
 
 	  /* Arguments are ready. Create the new vector stmt.  */
 	  new_stmt = gimple_build_assign (data_ref, vec_oprnd);
@@ -6668,11 +6663,6 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt,
 	    default:
 	      gcc_unreachable ();
 	    }
-	  /* If accesses through a pointer to vectype do not alias the original
-	     memory reference we have a problem.  This should never happen.  */
-	  gcc_assert (get_alias_set (data_ref) == get_alias_set (gimple_assign_rhs1 (stmt))
-		      || alias_set_subset_of (get_alias_set (data_ref),
-					      get_alias_set (gimple_assign_rhs1 (stmt))));
 	  vec_dest = vect_create_destination_var (scalar_dest, vectype);
 	  new_stmt = gimple_build_assign (vec_dest, data_ref);
 	  new_temp = make_ssa_name (vec_dest, new_stmt);