Merge commit 'ff7aeceb6b3a476c3bac66a7f39a5ef4240206fc' [#247, #906]

1 files changed, 49 insertions, 0 deletions

diff --git a/gcc/tree-vector-builder.cc b/gcc/tree-vector-builder.cc
new file mode 100644
index 0000000..a09d667
--- /dev/null
+++ b/gcc/tree-vector-builder.cc
@@ -0,0 +1,49 @@
+/* A class for building vector tree constants.
+   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tree.h"
+#include "fold-const.h"
+#include "tree-vector-builder.h"
+
+/* Return a vector element with the value BASE + FACTOR * STEP.  */
+
+tree
+tree_vector_builder::apply_step (tree base, unsigned int factor,
+				 const wide_int &step) const
+{
+  return wide_int_to_tree (TREE_TYPE (base),
+			   wi::to_wide (base) + factor * step);
+}
+
+/* Return a VECTOR_CST for the current constant.  */
+
+tree
+tree_vector_builder::build ()
+{
+  finalize ();
+  gcc_assert (pow2p_hwi (npatterns ()));
+  tree v = make_vector (exact_log2 (npatterns ()), nelts_per_pattern ());
+  TREE_TYPE (v) = m_type;
+  memcpy (VECTOR_CST_ENCODED_ELTS (v), address (),
+	  encoded_nelts () * sizeof (tree));
+  return v;
+}