Because common_handle_aligned_attribute only applies the alignment to the
TREE_TYPE of a typedef, not the DECL_ORIGINAL_TYPE, we need to copy it
explicitly in tsubst.
PR c++/65211
gcc/cp/ChangeLog:
* pt.c (tsubst_decl) [TYPE_DECL]: Copy TYPE_ALIGN.
gcc/testsuite/ChangeLog:
* g++.target/i386/vec-tmpl1.C: New test.
{
DECL_ORIGINAL_TYPE (r) = NULL_TREE;
set_underlying_type (r);
+
+ /* common_handle_aligned_attribute doesn't apply the alignment
+ to DECL_ORIGINAL_TYPE. */
+ if (TYPE_USER_ALIGN (TREE_TYPE (t)))
+ TREE_TYPE (r) = build_aligned_type (TREE_TYPE (r),
+ TYPE_ALIGN (TREE_TYPE (t)));
+
if (TYPE_DECL_ALIAS_P (r))
/* An alias template specialization can be dependent
even if its underlying type is not. */
--- /dev/null
+// PR c++/65211
+// { dg-additional-options "-Wno-psabi" }
+// { dg-final { scan-assembler-not "movdqa" } }
+
+typedef unsigned v4ui __attribute__ ((vector_size(16), aligned (16)));
+
+template<int I>
+static v4ui t1(unsigned *dest_data)
+{
+ typedef unsigned v4ui_1 __attribute__ ((vector_size (16), aligned (4)));
+ return ((const v4ui_1*)dest_data)[0];
+}
+
+v4ui f(unsigned int *array)
+{
+ return t1<1>(array+7);
+}