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Diffstat (limited to 'gcc-4.9/gcc/machmode.h')
| -rw-r--r-- | gcc-4.9/gcc/machmode.h | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/machmode.h b/gcc-4.9/gcc/machmode.h new file mode 100644 index 000000000..bc5d901d2 --- /dev/null +++ b/gcc-4.9/gcc/machmode.h @@ -0,0 +1,328 @@ +/* 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 */ |