From: Richard Henderson <rth@redhat.com>
Date: Mon, 30 Aug 2004 21:39:42 +0000 (-0700)
Subject: expr.c (array_ref_element_size): Force aligned_size back to sizetype.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bc482be4939cf93e6ddb948a42c751824e0a2d3e;p=gcc.git

expr.c (array_ref_element_size): Force aligned_size back to sizetype.

        * expr.c (array_ref_element_size): Force aligned_size back to
        sizetype.
        (component_ref_field_offset): Similarly for aligned_offset.
        * tree.c (recompute_tree_invarant_for_addr_expr): Mark raw
        low-bound, element-size, field-offset fields rather than
        computed values.

From-SVN: r86803
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 00f5745e38a..00e61c6c32a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2004-08-30  Richard Henderson  <rth@redhat.com>
+
+	* expr.c (array_ref_element_size): Force aligned_size back to
+	sizetype.
+	(component_ref_field_offset): Similarly for aligned_offset.
+	* tree.c (recompute_tree_invarant_for_addr_expr): Mark raw
+	low-bound, element-size, field-offset fields rather than
+	computed values.
+
 2004-08-30  Joseph S. Myers  <jsm@polyomino.org.uk>
 
 	* c-parse.in (parmlist_or_identifiers_1): Remove unreachable and
diff --git a/gcc/expr.c b/gcc/expr.c
index d3c3e89799c..ca19b7a62c1 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5481,8 +5481,14 @@ array_ref_element_size (tree exp)
   /* If a size was specified in the ARRAY_REF, it's the size measured
      in alignment units of the element type.  So multiply by that value.  */
   if (aligned_size)
-    return size_binop (MULT_EXPR, aligned_size,
-		       size_int (TYPE_ALIGN (elmt_type) / BITS_PER_UNIT));
+    {
+      /* ??? tree_ssa_useless_type_conversion will eliminate casts to
+	 sizetype from another type of the same width and signedness.  */
+      if (TREE_TYPE (aligned_size) != sizetype)
+	aligned_size = fold_convert (sizetype, aligned_size);
+      return size_binop (MULT_EXPR, aligned_size,
+		         size_int (TYPE_ALIGN (elmt_type) / BITS_PER_UNIT));
+    }
 
   /* Otherwise, take the size from that of the element type.  Substitute
      any PLACEHOLDER_EXPR that we have.  */
@@ -5541,8 +5547,14 @@ component_ref_field_offset (tree exp)
      in units of DECL_OFFSET_ALIGN / BITS_PER_UNIT.  So multiply by that
      value.  */
   if (aligned_offset)
-    return size_binop (MULT_EXPR, aligned_offset,
-		       size_int (DECL_OFFSET_ALIGN (field) / BITS_PER_UNIT));
+    {
+      /* ??? tree_ssa_useless_type_conversion will eliminate casts to
+	 sizetype from another type of the same width and signedness.  */
+      if (TREE_TYPE (aligned_offset) != sizetype)
+	aligned_offset = fold_convert (sizetype, aligned_offset);
+      return size_binop (MULT_EXPR, aligned_offset,
+		         size_int (DECL_OFFSET_ALIGN (field) / BITS_PER_UNIT));
+    }
 
   /* Otherwise, take the offset from that of the field.  Substitute
      any PLACEHOLDER_EXPR that we have.  */
diff --git a/gcc/tree.c b/gcc/tree.c
index 1c5060e5869..90e77ab2735 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -2252,15 +2252,20 @@ do { tree _node = (NODE); \
 	  && TREE_CODE (TREE_TYPE (TREE_OPERAND (node, 0))) == ARRAY_TYPE)
 	{
 	  UPDATE_TITCSE (TREE_OPERAND (node, 1));
-	  UPDATE_TITCSE (array_ref_low_bound (node));
-	  UPDATE_TITCSE (array_ref_element_size (node));
+	  if (TREE_OPERAND (node, 2))
+	    UPDATE_TITCSE (TREE_OPERAND (node, 2));
+	  if (TREE_OPERAND (node, 3))
+	    UPDATE_TITCSE (TREE_OPERAND (node, 3));
 	}
       /* Likewise, just because this is a COMPONENT_REF doesn't mean we have a
 	 FIELD_DECL, apparently.  The G++ front end can put something else
 	 there, at least temporarily.  */
       else if (TREE_CODE (node) == COMPONENT_REF
 	       && TREE_CODE (TREE_OPERAND (node, 1)) == FIELD_DECL)
-	UPDATE_TITCSE (component_ref_field_offset (node));
+	{
+	  if (TREE_OPERAND (node, 2))
+	    UPDATE_TITCSE (TREE_OPERAND (node, 2));
+	}
       else if (TREE_CODE (node) == BIT_FIELD_REF)
 	UPDATE_TITCSE (TREE_OPERAND (node, 2));
     }