/* A class for building vector integer constants. Copyright (C) 2017-2020 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 |