1 /* A class for building vector tree constants. 2 Copyright (C) 2017-2020 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #include "config.h" 21 #include "system.h" 22 #include "coretypes.h" 23 #include "tree.h" 24 #include "fold-const.h" 25 #include "tree-vector-builder.h" 26 27 /* Return a vector element with the value BASE + FACTOR * STEP. */ 28 29 tree 30 tree_vector_builder::apply_step (tree base, unsigned int factor, 31 const wide_int &step) const 32 { 33 return wide_int_to_tree (TREE_TYPE (base), 34 wi::to_wide (base) + factor * step); 35 } 36 37 /* Return a VECTOR_CST for the current constant. */ 38 39 tree 40 tree_vector_builder::build () 41 { 42 finalize (); 43 gcc_assert (pow2p_hwi (npatterns ())); 44 tree v = make_vector (exact_log2 (npatterns ()), nelts_per_pattern ()); 45 TREE_TYPE (v) = m_type; 46 memcpy (VECTOR_CST_ENCODED_ELTS (v), address (), 47 encoded_nelts () * sizeof (tree)); 48 return v; 49 } 50