2012-03-22 Jakub Jelinek <jakub@redhat.com>
- Backported from trunk
+ Backported from mainline
2012-03-13 Jakub Jelinek <jakub@redhat.com>
+
+ PR c/52577
+ * c-parser.c (c_parser_postfix_expression)
+ <case RID_BUILTIN_SHUFFLE>: Call mark_exp_read on argument values.
* config/i386/smmintrin.h: Avoid /* within a comment.
* config/i386/nmmintrin.h: Likewise.
/* Parser for C and Objective-C.
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011,
+ 2012 Free Software Foundation, Inc.
Parser actions based on the old Bison parser; structure somewhat
influenced by and fragments based on the C++ parser.
case RID_BUILTIN_SHUFFLE:
{
VEC(c_expr_t,gc) *cexpr_list;
+ unsigned int i;
+ c_expr_t *p;
c_parser_consume_token (parser);
if (!c_parser_get_builtin_args (parser,
break;
}
+ FOR_EACH_VEC_ELT (c_expr_t, cexpr_list, i, p)
+ mark_exp_read (p->value);
+
if (VEC_length (c_expr_t, cexpr_list) == 2)
expr.value =
c_build_vec_perm_expr
--- /dev/null
+/* PR c/52577 */
+/* { dg-do compile } */
+/* { dg-options "-Wunused" } */
+
+typedef int V __attribute__((vector_size (sizeof (int) * 4)));
+
+void
+f1 (V *p)
+{
+ V mask = { 1, 2, 3, 0 };
+ *p = __builtin_shuffle (*p, mask);
+}
+
+void
+f2 (V *p, V *q)
+{
+ V mask = { 1, 2, 3, 0 };
+ *p = __builtin_shuffle (*p, *q, mask);
+}
+
+void
+f3 (V *p, V *mask)
+{
+ V a = { 1, 2, 3, 0 };
+ *p = __builtin_shuffle (a, *mask);
+}
+
+void
+f4 (V *p, V *mask)
+{
+ V a = { 1, 2, 3, 0 };
+ V b = { 2, 3, 4, 1 };
+ *p = __builtin_shuffle (a, b, *mask);
+}