[PATCH] Add POLY_INT_CST support to fold_ctor_reference in gimple-fold.cc

Add POLY_INT_CST support to code within
fold_ctor_reference. This code previously
only supported INTEGER_CST which caused a
bug when using VEC_PERM_EXPR with SVE vectors.

gcc/ChangeLog:

	* gimple-fold.cc (fold_ctor_reference):
	Add support for poly_int.

diff --git a/gcc/gimple-fold.cc b/gcc/gimple-fold.cc
index 86b83472a61616f0cdd6ce44db1f8b0f2c8bdc68..fd01810581ad48687b5e778a4ca758f1d492560b 100644 (file)
--- a/gcc/gimple-fold.cc
+++ b/gcc/gimple-fold.cc
@@ -8159,8 +8159,8 @@ fold_ctor_reference (tree type, tree ctor, const poly_uint64 &poly_offset,
      result.  */
   if (!AGGREGATE_TYPE_P (TREE_TYPE (ctor)) && !offset
       /* VIEW_CONVERT_EXPR is defined only for matching sizes.  */
-      && !compare_tree_int (TYPE_SIZE (type), size)
-      && !compare_tree_int (TYPE_SIZE (TREE_TYPE (ctor)), size))
+      && known_eq (wi::to_poly_widest (TYPE_SIZE (type)), size)
+      && known_eq (wi::to_poly_widest (TYPE_SIZE (TREE_TYPE (ctor))), size))
     {
       ret = canonicalize_constructor_val (unshare_expr (ctor), from_decl);
       if (ret)