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/* A class for building vector integer constants.
Copyright (C) 2017-2024 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/>. */
#ifndef GCC_INT_VECTOR_BUILDER_H
#define GCC_INT_VECTOR_BUILDER_H 1
#include "vector-builder.h"
/* This class is used to build vectors of integer type T using the same
encoding as tree and rtx constants. See vector_builder for more
details. */
template<typename T>
class int_vector_builder : public vector_builder<T, poly_uint64,
int_vector_builder<T> >
{
typedef vector_builder<T, poly_uint64, int_vector_builder> parent;
friend class vector_builder<T, poly_uint64, int_vector_builder>;
public:
int_vector_builder () {}
int_vector_builder (poly_uint64, unsigned int, unsigned int);
using parent::new_vector;
private:
bool equal_p (T, T) const;
bool allow_steps_p () const { return true; }
bool integral_p (T) const { return true; }
T step (T, T) const;
T apply_step (T, unsigned int, T) const;
bool can_elide_p (T) const { return true; }
void note_representative (T *, T) {}
static poly_uint64 shape_nelts (poly_uint64 x) { return x; }
};
/* Create a new builder for a vector with FULL_NELTS elements.
Initially encode the value as NPATTERNS interleaved patterns with
NELTS_PER_PATTERN elements each. */
template<typename T>
inline
int_vector_builder<T>::int_vector_builder (poly_uint64 full_nelts,
unsigned int npatterns,
unsigned int nelts_per_pattern)
{
new_vector (full_nelts, npatterns, nelts_per_pattern);
}
/* Return true if elements ELT1 and ELT2 are equal. */
template<typename T>
inline bool
int_vector_builder<T>::equal_p (T elt1, T elt2) const
{
return known_eq (elt1, elt2);
}
/* Return the value of element ELT2 minus the value of element ELT1. */
template<typename T>
inline T
int_vector_builder<T>::step (T elt1, T elt2) const
{
return elt2 - elt1;
}
/* Return a vector element with the value BASE + FACTOR * STEP. */
template<typename T>
inline T
int_vector_builder<T>::apply_step (T base, unsigned int factor, T step) const
{
return base + factor * step;
}
#endif
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