vec-perm-indices.h File Reference

#include "int-vector-builder.h"

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Data Structures
class	vec_perm_indices

Typedefs
typedef int_vector_builder< poly_int64 >	vec_perm_builder

Functions
bool	tree_to_vec_perm_builder (vec_perm_builder *, tree)
tree	vec_perm_indices_to_tree (tree, const vec_perm_indices &)
rtx	vec_perm_indices_to_rtx (machine_mode, const vec_perm_indices &)

Typedef Documentation

vec_perm_builder

typedef int_vector_builder<poly_int64> vec_perm_builder

A representation of vector permutation indices.
   Copyright (C) 2017-2025 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/>.   

A vector_builder for building constant permutation vectors.
The elements do not need to be clamped to a particular range
of input elements.   

Function Documentation

tree_to_vec_perm_builder()

bool tree_to_vec_perm_builder	(	vec_perm_builder *	builder,
		tree	cst )

Try to read the contents of VECTOR_CST CST as a constant permutation
vector.  Return true and add the elements to BUILDER on success,
otherwise return false without modifying BUILDER.   

References i, int_vector_builder< T >::new_vector(), tree_fits_poly_int64_p(), tree_to_poly_int64(), TREE_TYPE, TYPE_VECTOR_SUBPARTS(), VECTOR_CST_ENCODED_ELT, vector_cst_encoded_nelts(), VECTOR_CST_NELTS_PER_PATTERN, and VECTOR_CST_NPATTERNS.

Referenced by expand_expr_real_2(), fold_ternary_loc(), is_combined_permutation_identity(), lower_vec_perm(), and simplify_permutation().

vec_perm_indices_to_rtx()

rtx vec_perm_indices_to_rtx	(	machine_mode	mode,
		const vec_perm_indices &	indices )

Return a CONST_VECTOR of mode MODE that contains the elements of
INDICES.   

References rtx_vector_builder::build(), vector_builder< T, Shape, Derived >::encoded_nelts(), gcc_assert, gen_int_mode(), GET_MODE_CLASS, GET_MODE_INNER, GET_MODE_NUNITS(), i, and known_eq.

Referenced by expand_vec_perm_const().

vec_perm_indices_to_tree()

tree vec_perm_indices_to_tree	(	tree	type,
		const vec_perm_indices &	indices )

Return a VECTOR_CST of type TYPE for the permutation vector in INDICES.   

References tree_vector_builder::build(), build_int_cst(), vector_builder< T, Shape, Derived >::encoded_nelts(), gcc_assert, i, known_eq, TREE_TYPE, and TYPE_VECTOR_SUBPARTS().

Referenced by simplify_permutation(), simplify_vector_constructor(), vect_gen_perm_mask_any(), and vectorizable_bswap().