| /* Machine mode definitions for GCC; included by rtl.h and tree.h. |
| Copyright (C) 1991-2014 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 HAVE_MACHINE_MODES |
| #define HAVE_MACHINE_MODES |
| |
| /* Make an enum class that gives all the machine modes. */ |
| #include "insn-modes.h" |
| |
| /* Get the name of mode MODE as a string. */ |
| |
| extern const char * const mode_name[NUM_MACHINE_MODES]; |
| #define GET_MODE_NAME(MODE) mode_name[MODE] |
| |
| /* Mode classes. */ |
| |
| #include "mode-classes.def" |
| #define DEF_MODE_CLASS(M) M |
| enum mode_class { MODE_CLASSES, MAX_MODE_CLASS }; |
| #undef DEF_MODE_CLASS |
| #undef MODE_CLASSES |
| |
| /* Get the general kind of object that mode MODE represents |
| (integer, floating, complex, etc.) */ |
| |
| extern const unsigned char mode_class[NUM_MACHINE_MODES]; |
| #define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE]) |
| |
| /* Nonzero if MODE is an integral mode. */ |
| #define INTEGRAL_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_INT) |
| |
| /* Nonzero if MODE is a floating-point mode. */ |
| #define FLOAT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_FLOAT \ |
| || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \ |
| || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT) |
| |
| /* Nonzero if MODE is a complex mode. */ |
| #define COMPLEX_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) |
| |
| /* Nonzero if MODE is a vector mode. */ |
| #define VECTOR_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM) |
| |
| /* Nonzero if MODE is a scalar integral mode. */ |
| #define SCALAR_INT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_INT \ |
| || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT) |
| |
| /* Nonzero if MODE is a scalar floating point mode. */ |
| #define SCALAR_FLOAT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_FLOAT \ |
| || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT) |
| |
| /* Nonzero if MODE is a decimal floating point mode. */ |
| #define DECIMAL_FLOAT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT) |
| |
| /* Nonzero if MODE is a scalar fract mode. */ |
| #define SCALAR_FRACT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_FRACT) |
| |
| /* Nonzero if MODE is a scalar ufract mode. */ |
| #define SCALAR_UFRACT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_UFRACT) |
| |
| /* Nonzero if MODE is a scalar fract or ufract mode. */ |
| #define ALL_SCALAR_FRACT_MODE_P(MODE) \ |
| (SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar accum mode. */ |
| #define SCALAR_ACCUM_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_ACCUM) |
| |
| /* Nonzero if MODE is a scalar uaccum mode. */ |
| #define SCALAR_UACCUM_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_UACCUM) |
| |
| /* Nonzero if MODE is a scalar accum or uaccum mode. */ |
| #define ALL_SCALAR_ACCUM_MODE_P(MODE) \ |
| (SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar fract or accum mode. */ |
| #define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \ |
| (SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar ufract or uaccum mode. */ |
| #define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \ |
| (SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */ |
| #define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \ |
| (SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \ |
| || UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar/vector fract mode. */ |
| #define FRACT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_FRACT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT) |
| |
| /* Nonzero if MODE is a scalar/vector ufract mode. */ |
| #define UFRACT_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_UFRACT \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT) |
| |
| /* Nonzero if MODE is a scalar/vector fract or ufract mode. */ |
| #define ALL_FRACT_MODE_P(MODE) \ |
| (FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar/vector accum mode. */ |
| #define ACCUM_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_ACCUM \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM) |
| |
| /* Nonzero if MODE is a scalar/vector uaccum mode. */ |
| #define UACCUM_MODE_P(MODE) \ |
| (GET_MODE_CLASS (MODE) == MODE_UACCUM \ |
| || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM) |
| |
| /* Nonzero if MODE is a scalar/vector accum or uaccum mode. */ |
| #define ALL_ACCUM_MODE_P(MODE) \ |
| (ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar/vector fract or accum mode. */ |
| #define SIGNED_FIXED_POINT_MODE_P(MODE) \ |
| (FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */ |
| #define UNSIGNED_FIXED_POINT_MODE_P(MODE) \ |
| (UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE)) |
| |
| /* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */ |
| #define ALL_FIXED_POINT_MODE_P(MODE) \ |
| (SIGNED_FIXED_POINT_MODE_P (MODE) \ |
| || UNSIGNED_FIXED_POINT_MODE_P (MODE)) |
| |
| /* Nonzero if CLASS modes can be widened. */ |
| #define CLASS_HAS_WIDER_MODES_P(CLASS) \ |
| (CLASS == MODE_INT \ |
| || CLASS == MODE_PARTIAL_INT \ |
| || CLASS == MODE_FLOAT \ |
| || CLASS == MODE_DECIMAL_FLOAT \ |
| || CLASS == MODE_COMPLEX_FLOAT \ |
| || CLASS == MODE_FRACT \ |
| || CLASS == MODE_UFRACT \ |
| || CLASS == MODE_ACCUM \ |
| || CLASS == MODE_UACCUM) |
| |
| /* Get the size in bytes and bits of an object of mode MODE. */ |
| |
| extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES]; |
| #define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE]) |
| #define GET_MODE_BITSIZE(MODE) \ |
| ((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT)) |
| |
| /* Get the number of value bits of an object of mode MODE. */ |
| extern const unsigned short mode_precision[NUM_MACHINE_MODES]; |
| #define GET_MODE_PRECISION(MODE) mode_precision[MODE] |
| |
| /* Get the number of integral bits of an object of mode MODE. */ |
| extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES]; |
| #define GET_MODE_IBIT(MODE) mode_ibit[MODE] |
| |
| /* Get the number of fractional bits of an object of mode MODE. */ |
| extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES]; |
| #define GET_MODE_FBIT(MODE) mode_fbit[MODE] |
| |
| /* Get a bitmask containing 1 for all bits in a word |
| that fit within mode MODE. */ |
| |
| extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES]; |
| |
| #define GET_MODE_MASK(MODE) mode_mask_array[MODE] |
| |
| /* Return the mode of the inner elements in a vector. */ |
| |
| extern const unsigned char mode_inner[NUM_MACHINE_MODES]; |
| #define GET_MODE_INNER(MODE) ((enum machine_mode) mode_inner[MODE]) |
| |
| /* Get the size in bytes or bites of the basic parts of an |
| object of mode MODE. */ |
| |
| #define GET_MODE_UNIT_SIZE(MODE) \ |
| (GET_MODE_INNER (MODE) == VOIDmode \ |
| ? GET_MODE_SIZE (MODE) \ |
| : GET_MODE_SIZE (GET_MODE_INNER (MODE))) |
| |
| #define GET_MODE_UNIT_BITSIZE(MODE) \ |
| ((unsigned short) (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)) |
| |
| #define GET_MODE_UNIT_PRECISION(MODE) \ |
| (GET_MODE_INNER (MODE) == VOIDmode \ |
| ? GET_MODE_PRECISION (MODE) \ |
| : GET_MODE_PRECISION (GET_MODE_INNER (MODE))) |
| |
| /* Get the number of units in the object. */ |
| |
| extern const unsigned char mode_nunits[NUM_MACHINE_MODES]; |
| #define GET_MODE_NUNITS(MODE) mode_nunits[MODE] |
| |
| /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ |
| |
| extern const unsigned char mode_wider[NUM_MACHINE_MODES]; |
| #define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode) mode_wider[MODE]) |
| |
| /* For scalars, this is a mode with twice the precision. For vectors, |
| this is a mode with the same inner mode but with twice the elements. */ |
| extern const unsigned char mode_2xwider[NUM_MACHINE_MODES]; |
| #define GET_MODE_2XWIDER_MODE(MODE) ((enum machine_mode) mode_2xwider[MODE]) |
| |
| /* Return the mode for data of a given size SIZE and mode class CLASS. |
| If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. |
| The value is BLKmode if no other mode is found. */ |
| |
| extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int); |
| |
| /* Similar, but find the smallest mode for a given width. */ |
| |
| extern enum machine_mode smallest_mode_for_size (unsigned int, |
| enum mode_class); |
| |
| |
| /* Return an integer mode of the exact same size as the input mode, |
| or BLKmode on failure. */ |
| |
| extern enum machine_mode int_mode_for_mode (enum machine_mode); |
| |
| /* Return a mode that is suitable for representing a vector, |
| or BLKmode on failure. */ |
| |
| extern enum machine_mode mode_for_vector (enum machine_mode, unsigned); |
| |
| /* A class for iterating through possible bitfield modes. */ |
| class bit_field_mode_iterator |
| { |
| public: |
| bit_field_mode_iterator (HOST_WIDE_INT, HOST_WIDE_INT, |
| HOST_WIDE_INT, HOST_WIDE_INT, |
| unsigned int, bool); |
| bool next_mode (enum machine_mode *); |
| bool prefer_smaller_modes (); |
| |
| private: |
| enum machine_mode m_mode; |
| /* We use signed values here because the bit position can be negative |
| for invalid input such as gcc.dg/pr48335-8.c. */ |
| HOST_WIDE_INT m_bitsize; |
| HOST_WIDE_INT m_bitpos; |
| HOST_WIDE_INT m_bitregion_start; |
| HOST_WIDE_INT m_bitregion_end; |
| unsigned int m_align; |
| bool m_volatilep; |
| int m_count; |
| }; |
| |
| /* Find the best mode to use to access a bit field. */ |
| |
| extern enum machine_mode get_best_mode (int, int, |
| unsigned HOST_WIDE_INT, |
| unsigned HOST_WIDE_INT, |
| unsigned int, |
| enum machine_mode, bool); |
| |
| /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ |
| |
| extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES]; |
| |
| extern unsigned get_mode_alignment (enum machine_mode); |
| |
| #define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE) |
| |
| /* Get the precision of the mode or its inner mode if it has one. */ |
| |
| extern unsigned int element_precision (enum machine_mode); |
| |
| /* For each class, get the narrowest mode in that class. */ |
| |
| extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS]; |
| #define GET_CLASS_NARROWEST_MODE(CLASS) \ |
| ((enum machine_mode) class_narrowest_mode[CLASS]) |
| |
| /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD |
| and the mode whose class is Pmode and whose size is POINTER_SIZE. */ |
| |
| extern enum machine_mode byte_mode; |
| extern enum machine_mode word_mode; |
| extern enum machine_mode ptr_mode; |
| |
| /* Target-dependent machine mode initialization - in insn-modes.c. */ |
| extern void init_adjust_machine_modes (void); |
| |
| #define TRULY_NOOP_TRUNCATION_MODES_P(MODE1, MODE2) \ |
| TRULY_NOOP_TRUNCATION (GET_MODE_PRECISION (MODE1), \ |
| GET_MODE_PRECISION (MODE2)) |
| |
| #define HWI_COMPUTABLE_MODE_P(MODE) \ |
| (SCALAR_INT_MODE_P (MODE) \ |
| && GET_MODE_PRECISION (MODE) <= HOST_BITS_PER_WIDE_INT) |
| |
| #endif /* not HAVE_MACHINE_MODES */ |