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https://github.com/autc04/Retro68.git
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376 lines
13 KiB
C++
376 lines
13 KiB
C++
/* Machine mode definitions for GCC; included by rtl.h and tree.h.
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Copyright (C) 1991-2017 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef HAVE_MACHINE_MODES
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#define HAVE_MACHINE_MODES
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/* Make an enum class that gives all the machine modes. */
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#include "insn-modes.h"
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/* Get the name of mode MODE as a string. */
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extern const char * const mode_name[NUM_MACHINE_MODES];
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#define GET_MODE_NAME(MODE) mode_name[MODE]
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/* Mode classes. */
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#include "mode-classes.def"
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#define DEF_MODE_CLASS(M) M
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enum mode_class { MODE_CLASSES, MAX_MODE_CLASS };
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#undef DEF_MODE_CLASS
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#undef MODE_CLASSES
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/* Get the general kind of object that mode MODE represents
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(integer, floating, complex, etc.) */
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extern const unsigned char mode_class[NUM_MACHINE_MODES];
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#define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE])
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/* Nonzero if MODE is an integral mode. */
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#define INTEGRAL_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_INT \
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|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
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|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_INT)
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/* Nonzero if MODE is a floating-point mode. */
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#define FLOAT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT)
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/* Nonzero if MODE is a complex mode. */
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#define COMPLEX_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
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|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
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/* Nonzero if MODE is a vector mode. */
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#define VECTOR_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
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/* Nonzero if MODE is a scalar integral mode. */
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#define SCALAR_INT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_INT \
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|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT)
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/* Nonzero if MODE is a scalar floating point mode. */
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#define SCALAR_FLOAT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_FLOAT \
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|| GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
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/* Nonzero if MODE is a decimal floating point mode. */
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#define DECIMAL_FLOAT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
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/* Nonzero if MODE is a scalar fract mode. */
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#define SCALAR_FRACT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_FRACT)
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/* Nonzero if MODE is a scalar ufract mode. */
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#define SCALAR_UFRACT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_UFRACT)
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/* Nonzero if MODE is a scalar fract or ufract mode. */
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#define ALL_SCALAR_FRACT_MODE_P(MODE) \
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(SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE))
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/* Nonzero if MODE is a scalar accum mode. */
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#define SCALAR_ACCUM_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_ACCUM)
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/* Nonzero if MODE is a scalar uaccum mode. */
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#define SCALAR_UACCUM_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_UACCUM)
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/* Nonzero if MODE is a scalar accum or uaccum mode. */
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#define ALL_SCALAR_ACCUM_MODE_P(MODE) \
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(SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
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/* Nonzero if MODE is a scalar fract or accum mode. */
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#define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
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(SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE))
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/* Nonzero if MODE is a scalar ufract or uaccum mode. */
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#define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
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(SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
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/* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */
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#define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \
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(SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \
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|| UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE))
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/* Nonzero if MODE is a scalar/vector fract mode. */
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#define FRACT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_FRACT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT)
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/* Nonzero if MODE is a scalar/vector ufract mode. */
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#define UFRACT_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_UFRACT \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT)
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/* Nonzero if MODE is a scalar/vector fract or ufract mode. */
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#define ALL_FRACT_MODE_P(MODE) \
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(FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE))
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/* Nonzero if MODE is a scalar/vector accum mode. */
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#define ACCUM_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_ACCUM \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM)
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/* Nonzero if MODE is a scalar/vector uaccum mode. */
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#define UACCUM_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_UACCUM \
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|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
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/* Nonzero if MODE is a scalar/vector accum or uaccum mode. */
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#define ALL_ACCUM_MODE_P(MODE) \
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(ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE))
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/* Nonzero if MODE is a scalar/vector fract or accum mode. */
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#define SIGNED_FIXED_POINT_MODE_P(MODE) \
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(FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE))
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/* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */
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#define UNSIGNED_FIXED_POINT_MODE_P(MODE) \
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(UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE))
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/* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */
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#define ALL_FIXED_POINT_MODE_P(MODE) \
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(SIGNED_FIXED_POINT_MODE_P (MODE) \
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|| UNSIGNED_FIXED_POINT_MODE_P (MODE))
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/* Nonzero if CLASS modes can be widened. */
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#define CLASS_HAS_WIDER_MODES_P(CLASS) \
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(CLASS == MODE_INT \
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|| CLASS == MODE_PARTIAL_INT \
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|| CLASS == MODE_FLOAT \
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|| CLASS == MODE_DECIMAL_FLOAT \
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|| CLASS == MODE_COMPLEX_FLOAT \
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|| CLASS == MODE_FRACT \
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|| CLASS == MODE_UFRACT \
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|| CLASS == MODE_ACCUM \
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|| CLASS == MODE_UACCUM)
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#define POINTER_BOUNDS_MODE_P(MODE) \
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(GET_MODE_CLASS (MODE) == MODE_POINTER_BOUNDS)
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/* Get the size in bytes and bits of an object of mode MODE. */
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extern CONST_MODE_SIZE unsigned short mode_size[NUM_MACHINE_MODES];
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#if GCC_VERSION >= 4001
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#define GET_MODE_SIZE(MODE) \
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((unsigned short) (__builtin_constant_p (MODE) \
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? mode_size_inline (MODE) : mode_size[MODE]))
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#else
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#define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE])
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#endif
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#define GET_MODE_BITSIZE(MODE) \
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((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT))
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/* Get the number of value bits of an object of mode MODE. */
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extern const unsigned short mode_precision[NUM_MACHINE_MODES];
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#define GET_MODE_PRECISION(MODE) mode_precision[MODE]
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/* Get the number of integral bits of an object of mode MODE. */
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extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES];
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#define GET_MODE_IBIT(MODE) mode_ibit[MODE]
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/* Get the number of fractional bits of an object of mode MODE. */
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extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES];
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#define GET_MODE_FBIT(MODE) mode_fbit[MODE]
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/* Get a bitmask containing 1 for all bits in a word
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that fit within mode MODE. */
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extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES];
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#define GET_MODE_MASK(MODE) mode_mask_array[MODE]
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/* Return the mode of the basic parts of MODE. For vector modes this is the
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mode of the vector elements. For complex modes it is the mode of the real
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and imaginary parts. For other modes it is MODE itself. */
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extern const unsigned char mode_inner[NUM_MACHINE_MODES];
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#if GCC_VERSION >= 4001
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#define GET_MODE_INNER(MODE) \
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((machine_mode) (__builtin_constant_p (MODE) \
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? mode_inner_inline (MODE) : mode_inner[MODE]))
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#else
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#define GET_MODE_INNER(MODE) ((machine_mode) mode_inner[MODE])
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#endif
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/* Get the size in bytes or bits of the basic parts of an
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object of mode MODE. */
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extern CONST_MODE_UNIT_SIZE unsigned char mode_unit_size[NUM_MACHINE_MODES];
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#if GCC_VERSION >= 4001
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#define GET_MODE_UNIT_SIZE(MODE) \
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((unsigned char) (__builtin_constant_p (MODE) \
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? mode_unit_size_inline (MODE) : mode_unit_size[MODE]))
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#else
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#define GET_MODE_UNIT_SIZE(MODE) mode_unit_size[MODE]
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#endif
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#define GET_MODE_UNIT_BITSIZE(MODE) \
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((unsigned short) (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))
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extern const unsigned short mode_unit_precision[NUM_MACHINE_MODES];
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#if GCC_VERSION >= 4001
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#define GET_MODE_UNIT_PRECISION(MODE) \
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((unsigned short) (__builtin_constant_p (MODE) \
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? mode_unit_precision_inline (MODE)\
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: mode_unit_precision[MODE]))
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#else
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#define GET_MODE_UNIT_PRECISION(MODE) mode_unit_precision[MODE]
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#endif
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/* Get the number of units in the object. */
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extern const unsigned char mode_nunits[NUM_MACHINE_MODES];
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#if GCC_VERSION >= 4001
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#define GET_MODE_NUNITS(MODE) \
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((unsigned char) (__builtin_constant_p (MODE) \
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? mode_nunits_inline (MODE) : mode_nunits[MODE]))
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#else
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#define GET_MODE_NUNITS(MODE) mode_nunits[MODE]
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#endif
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/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
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extern const unsigned char mode_wider[NUM_MACHINE_MODES];
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#define GET_MODE_WIDER_MODE(MODE) ((machine_mode) mode_wider[MODE])
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/* For scalars, this is a mode with twice the precision. For vectors,
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this is a mode with the same inner mode but with twice the elements. */
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extern const unsigned char mode_2xwider[NUM_MACHINE_MODES];
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#define GET_MODE_2XWIDER_MODE(MODE) ((machine_mode) mode_2xwider[MODE])
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/* Get the complex mode from the component mode. */
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extern const unsigned char mode_complex[NUM_MACHINE_MODES];
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#define GET_MODE_COMPLEX_MODE(MODE) ((machine_mode) mode_complex[MODE])
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/* Return the mode for data of a given size SIZE and mode class CLASS.
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If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
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The value is BLKmode if no other mode is found. */
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extern machine_mode mode_for_size (unsigned int, enum mode_class, int);
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/* Similar, but find the smallest mode for a given width. */
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extern machine_mode smallest_mode_for_size (unsigned int,
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enum mode_class);
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/* Return an integer mode of the exact same size as the input mode,
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or BLKmode on failure. */
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extern machine_mode int_mode_for_mode (machine_mode);
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extern machine_mode bitwise_mode_for_mode (machine_mode);
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/* Return a mode that is suitable for representing a vector,
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or BLKmode on failure. */
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extern machine_mode mode_for_vector (machine_mode, unsigned);
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/* A class for iterating through possible bitfield modes. */
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class bit_field_mode_iterator
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{
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public:
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bit_field_mode_iterator (HOST_WIDE_INT, HOST_WIDE_INT,
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HOST_WIDE_INT, HOST_WIDE_INT,
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unsigned int, bool);
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bool next_mode (machine_mode *);
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bool prefer_smaller_modes ();
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private:
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machine_mode m_mode;
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/* We use signed values here because the bit position can be negative
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for invalid input such as gcc.dg/pr48335-8.c. */
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HOST_WIDE_INT m_bitsize;
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HOST_WIDE_INT m_bitpos;
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HOST_WIDE_INT m_bitregion_start;
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HOST_WIDE_INT m_bitregion_end;
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unsigned int m_align;
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bool m_volatilep;
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int m_count;
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};
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/* Find the best mode to use to access a bit field. */
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extern machine_mode get_best_mode (int, int,
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unsigned HOST_WIDE_INT,
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unsigned HOST_WIDE_INT,
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unsigned int,
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machine_mode, bool);
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/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
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extern CONST_MODE_BASE_ALIGN unsigned short mode_base_align[NUM_MACHINE_MODES];
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extern unsigned get_mode_alignment (machine_mode);
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#define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE)
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/* For each class, get the narrowest mode in that class. */
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extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS];
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#define GET_CLASS_NARROWEST_MODE(CLASS) \
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((machine_mode) class_narrowest_mode[CLASS])
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/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
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and the mode whose class is Pmode and whose size is POINTER_SIZE. */
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extern machine_mode byte_mode;
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extern machine_mode word_mode;
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extern machine_mode ptr_mode;
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/* Target-dependent machine mode initialization - in insn-modes.c. */
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extern void init_adjust_machine_modes (void);
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#define TRULY_NOOP_TRUNCATION_MODES_P(MODE1, MODE2) \
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TRULY_NOOP_TRUNCATION (GET_MODE_PRECISION (MODE1), \
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GET_MODE_PRECISION (MODE2))
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#define HWI_COMPUTABLE_MODE_P(MODE) \
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(SCALAR_INT_MODE_P (MODE) \
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&& GET_MODE_PRECISION (MODE) <= HOST_BITS_PER_WIDE_INT)
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struct int_n_data_t {
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/* These parts are initailized by genmodes output */
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unsigned int bitsize;
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machine_mode m;
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/* RID_* is RID_INTN_BASE + index into this array */
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};
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/* This is also in tree.h. genmodes.c guarantees the're sorted from
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smallest bitsize to largest bitsize. */
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extern bool int_n_enabled_p[NUM_INT_N_ENTS];
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extern const int_n_data_t int_n_data[NUM_INT_N_ENTS];
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#endif /* not HAVE_MACHINE_MODES */
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