| /* A class for building vector integer constants. |
| Copyright (C) 2017-2018 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, int_vector_builder<T> > |
| { |
| typedef vector_builder<T, int_vector_builder> parent; |
| friend class vector_builder<T, 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) {} |
| }; |
| |
| /* 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 |