From: Richard Guenther <rguenther@suse.de>
Date: Wed, 28 Sep 2005 21:30:40 +0000 (+0000)
Subject: re PR tree-optimization/23853 (ICE: in tree_low_cst, at tree.c:4270)
X-Git-Tag: misc/cutover-cvs2svn~427
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9b14a362a3f08082301e7adf3880c58bbea9b8e5;p=thirdparty%2Fgcc.git

re PR tree-optimization/23853 (ICE: in tree_low_cst, at tree.c:4270)

2005-09-28  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/23853
	* tree-vect-analyze.c (vect_compute_data_ref_alignment): Use
	host_integerp to verify misalignment value.

From-SVN: r104743
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 67db2cb47c75..4c15aa2840b4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2005-09-28  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/23853
+	* tree-vect-analyze.c (vect_compute_data_ref_alignment): Use
+	host_integerp to verify misalignment value.
+
 2005-09-28  Richard Henderson  <rth@redhat.com>
 
 	* builtins.c (get_builtin_sync_mode): New.
diff --git a/gcc/tree-vect-analyze.c b/gcc/tree-vect-analyze.c
index 2c5136b19748..a9681bd0c18e 100644
--- a/gcc/tree-vect-analyze.c
+++ b/gcc/tree-vect-analyze.c
@@ -773,15 +773,15 @@ vect_compute_data_ref_alignment (struct data_reference *dr)
   /* Modulo alignment.  */
   misalign = size_binop (TRUNC_MOD_EXPR, misalign, alignment);
 
-  if (tree_int_cst_sgn (misalign) < 0)
+  if (!host_integerp (misalign, 1))
     {
-      /* Negative misalignment value.  */
+      /* Negative or overflowed misalignment value.  */
       if (vect_print_dump_info (REPORT_DETAILS))
 	fprintf (vect_dump, "unexpected misalign value");
       return false;
     }
 
-  DR_MISALIGNMENT (dr) = tree_low_cst (misalign, 1);
+  DR_MISALIGNMENT (dr) = TREE_INT_CST_LOW (misalign);
 
   if (vect_print_dump_info (REPORT_DETAILS))
     {