/* Machine mode definitions for GCC; included by rtl.h and tree.h.
- Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2003,
- 2007 Free Software Foundation, Inc.
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
This file is part of GCC.
(integer, floating, complex, etc.) */
extern const unsigned char mode_class[NUM_MACHINE_MODES];
-#define GET_MODE_CLASS(MODE) mode_class[MODE]
+#define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE])
/* Nonzero if MODE is an integral mode. */
#define INTEGRAL_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_ACCUM \
|| CLASS == MODE_UACCUM)
+#define POINTER_BOUNDS_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_POINTER_BOUNDS)
+
/* Get the size in bytes and bits of an object of mode MODE. */
extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES];
+#if GCC_VERSION >= 4001
+#define GET_MODE_SIZE(MODE) \
+ ((unsigned short) (__builtin_constant_p (MODE) \
+ ? mode_size_inline (MODE) : mode_size[MODE]))
+#else
#define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE])
-#define GET_MODE_BITSIZE(MODE) ((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT))
+#endif
+#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];
/* Return the mode of the inner elements in a vector. */
extern const unsigned char mode_inner[NUM_MACHINE_MODES];
-#define GET_MODE_INNER(MODE) mode_inner[MODE]
+#if GCC_VERSION >= 4001
+#define GET_MODE_INNER(MODE) \
+ ((machine_mode) (__builtin_constant_p (MODE) \
+ ? mode_inner_inline (MODE) : mode_inner[MODE]))
+#else
+#define GET_MODE_INNER(MODE) ((machine_mode) mode_inner[MODE])
+#endif
-/* Get the size in bytes of the basic parts of an object of mode 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];
+#if GCC_VERSION >= 4001
+#define GET_MODE_NUNITS(MODE) \
+ ((unsigned char) (__builtin_constant_p (MODE) \
+ ? mode_nunits_inline (MODE) : mode_nunits[MODE]))
+#else
#define GET_MODE_NUNITS(MODE) mode_nunits[MODE]
+#endif
/* 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) mode_wider[MODE]
+#define GET_MODE_WIDER_MODE(MODE) ((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) mode_2xwider[MODE]
+#define GET_MODE_2XWIDER_MODE(MODE) ((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);
+extern 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,
+extern 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);
+extern machine_mode int_mode_for_mode (machine_mode);
+
+extern machine_mode bitwise_mode_for_mode (machine_mode);
+
+/* Return a mode that is suitable for representing a vector,
+ or BLKmode on failure. */
+
+extern machine_mode mode_for_vector (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 (machine_mode *);
+ bool prefer_smaller_modes ();
+
+private:
+ 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 int,
- enum machine_mode, int);
+extern machine_mode get_best_mode (int, int,
+ unsigned HOST_WIDE_INT,
+ unsigned HOST_WIDE_INT,
+ unsigned int,
+ 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);
+extern unsigned get_mode_alignment (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 (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) class_narrowest_mode[CLASS]
+#define GET_CLASS_NARROWEST_MODE(CLASS) \
+ ((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;
+extern machine_mode byte_mode;
+extern machine_mode word_mode;
+extern 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)
+
+typedef struct {
+ /* These parts are initailized by genmodes output */
+ unsigned int bitsize;
+ machine_mode m;
+ /* RID_* is RID_INTN_BASE + index into this array */
+} int_n_data_t;
+
+/* This is also in tree.h. genmodes.c guarantees the're sorted from
+ smallest bitsize to largest bitsize. */
+extern bool int_n_enabled_p[NUM_INT_N_ENTS];
+extern const int_n_data_t int_n_data[NUM_INT_N_ENTS];
+
#endif /* not HAVE_MACHINE_MODES */
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