gcc/gcc/hwint.h
Richard Biener 35987ae95d configure.ac: Check whether the underlying type of int64_t is long or long long.
2014-06-04  Richard Biener  <rguenther@suse.de>

	* configure.ac: Check whether the underlying type of int64_t
	is long or long long.
	* configure: Regenerate.
	* config.in: Likewise.
	* hwint.h (HOST_WIDE_INT): Match the underlying type of int64_t.
	(HOST_WIDE_INT_PRINT_*): Define in terms of PRI*64.

From-SVN: r211228
2014-06-04 12:35:26 +00:00

268 lines
7.7 KiB
C

/* HOST_WIDE_INT definitions for the GNU compiler.
Copyright (C) 1998-2014 Free Software Foundation, Inc.
This file is part of GCC.
Provide definitions for macros which depend on HOST_BITS_PER_INT
and HOST_BITS_PER_LONG. */
#ifndef GCC_HWINT_H
#define GCC_HWINT_H
/* This describes the machine the compiler is hosted on. */
#define HOST_BITS_PER_CHAR CHAR_BIT
#define HOST_BITS_PER_SHORT (CHAR_BIT * SIZEOF_SHORT)
#define HOST_BITS_PER_INT (CHAR_BIT * SIZEOF_INT)
#define HOST_BITS_PER_LONG (CHAR_BIT * SIZEOF_LONG)
/* The string that should be inserted into a printf style format to
indicate a "long" operand. */
#ifndef HOST_LONG_FORMAT
#define HOST_LONG_FORMAT "l"
#endif
/* The string that should be inserted into a printf style format to
indicate a "long long" operand. */
#ifndef HOST_LONG_LONG_FORMAT
#define HOST_LONG_LONG_FORMAT "ll"
#endif
/* If HAVE_LONG_LONG and SIZEOF_LONG_LONG aren't defined, but
GCC_VERSION >= 3000, assume this is the second or later stage of a
bootstrap, we do have long long, and it's 64 bits. (This is
required by C99; we do have some ports that violate that assumption
but they're all cross-compile-only.) Just in case, force a
constraint violation if that assumption is incorrect. */
#if !defined HAVE_LONG_LONG
# if GCC_VERSION >= 3000
# define HAVE_LONG_LONG 1
# define SIZEOF_LONG_LONG 8
extern char sizeof_long_long_must_be_8[sizeof (long long) == 8 ? 1 : -1];
# endif
#endif
#ifdef HAVE_LONG_LONG
# define HOST_BITS_PER_LONGLONG (CHAR_BIT * SIZEOF_LONG_LONG)
#endif
/* Set HOST_WIDE_INT, this should be always 64 bits.
The underlying type is matched to that of int64_t and assumed
to be either long or long long. */
#define HOST_BITS_PER_WIDE_INT 64
#if INT64_T_IS_LONG
# define HOST_WIDE_INT long
# define HOST_WIDE_INT_C(X) X ## L
#else
# if HOST_BITS_PER_LONGLONG == 64
# define HOST_WIDE_INT long long
# define HOST_WIDE_INT_C(X) X ## LL
# else
#error "Unable to find a suitable type for HOST_WIDE_INT"
# endif
#endif
#define HOST_WIDE_INT_UC(X) HOST_WIDE_INT_C (X ## U)
#define HOST_WIDE_INT_1 HOST_WIDE_INT_C (1)
#define HOST_WIDE_INT_1U HOST_WIDE_INT_UC (1)
#define HOST_WIDE_INT_M1 HOST_WIDE_INT_C (-1)
#define HOST_WIDE_INT_M1U HOST_WIDE_INT_UC (-1)
/* This is a magic identifier which allows GCC to figure out the type
of HOST_WIDE_INT for %wd specifier checks. You must issue this
typedef before using the __asm_fprintf__ format attribute. */
typedef HOST_WIDE_INT __gcc_host_wide_int__;
/* Provide C99 <inttypes.h> style format definitions for 64bits. */
#ifndef HAVE_INTTYPES_H
#if INT64_T_IS_LONG
# define GCC_PRI64 HOST_LONG_FORMAT
#else
# define GCC_PRI64 HOST_LONG_LONG_FORMAT
#endif
#undef PRId64
#define PRId64 GCC_PRI64 "d"
#undef PRIi64
#define PRIi64 GCC_PRI64 "i"
#undef PRIo64
#define PRIo64 GCC_PRI64 "o"
#undef PRIu64
#define PRIu64 GCC_PRI64 "u"
#undef PRIx64
#define PRIx64 GCC_PRI64 "x"
#undef PRIX64
#define PRIX64 GCC_PRI64 "X"
#endif
/* Various printf format strings for HOST_WIDE_INT. */
#if INT64_T_IS_LONG
# define HOST_WIDE_INT_PRINT HOST_LONG_FORMAT
# define HOST_WIDE_INT_PRINT_C "L"
#else
# define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT
# define HOST_WIDE_INT_PRINT_C "LL"
#endif
#define HOST_WIDE_INT_PRINT_DEC "%" PRId64
#define HOST_WIDE_INT_PRINT_DEC_C "%" PRId64 HOST_WIDE_INT_PRINT_C
#define HOST_WIDE_INT_PRINT_UNSIGNED "%" PRIu64
#define HOST_WIDE_INT_PRINT_HEX "%#" PRIx64
#define HOST_WIDE_INT_PRINT_HEX_PURE "%" PRIx64
#define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%" PRIx64 "%016" PRIx64
#define HOST_WIDE_INT_PRINT_PADDED_HEX "%016" PRIx64
/* Define HOST_WIDEST_FAST_INT to the widest integer type supported
efficiently in hardware. (That is, the widest integer type that fits
in a hardware register.) Normally this is "long" but on some hosts it
should be "long long" or "__int64". This is no convenient way to
autodetect this, so such systems must set a flag in config.host; see there
for details. */
#ifdef USE_LONG_LONG_FOR_WIDEST_FAST_INT
# ifdef HAVE_LONG_LONG
# define HOST_WIDEST_FAST_INT long long
# define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONGLONG
# else
# error "Your host said it wanted to use long long but that does not exist"
# endif
#else
# define HOST_WIDEST_FAST_INT long
# define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONG
#endif
/* Inline functions operating on HOST_WIDE_INT. */
#if GCC_VERSION < 3004
extern int clz_hwi (unsigned HOST_WIDE_INT x);
extern int ctz_hwi (unsigned HOST_WIDE_INT x);
extern int ffs_hwi (unsigned HOST_WIDE_INT x);
/* Return the number of set bits in X. */
extern int popcount_hwi (unsigned HOST_WIDE_INT x);
/* Return log2, or -1 if not exact. */
extern int exact_log2 (unsigned HOST_WIDE_INT);
/* Return floor of log2, with -1 for zero. */
extern int floor_log2 (unsigned HOST_WIDE_INT);
/* Return the smallest n such that 2**n >= X. */
extern int ceil_log2 (unsigned HOST_WIDE_INT);
#else /* GCC_VERSION >= 3004 */
/* For convenience, define 0 -> word_size. */
static inline int
clz_hwi (unsigned HOST_WIDE_INT x)
{
if (x == 0)
return HOST_BITS_PER_WIDE_INT;
# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
return __builtin_clzl (x);
# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG
return __builtin_clzll (x);
# else
return __builtin_clz (x);
# endif
}
static inline int
ctz_hwi (unsigned HOST_WIDE_INT x)
{
if (x == 0)
return HOST_BITS_PER_WIDE_INT;
# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
return __builtin_ctzl (x);
# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG
return __builtin_ctzll (x);
# else
return __builtin_ctz (x);
# endif
}
static inline int
ffs_hwi (unsigned HOST_WIDE_INT x)
{
# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
return __builtin_ffsl (x);
# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG
return __builtin_ffsll (x);
# else
return __builtin_ffs (x);
# endif
}
static inline int
popcount_hwi (unsigned HOST_WIDE_INT x)
{
# if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
return __builtin_popcountl (x);
# elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG
return __builtin_popcountll (x);
# else
return __builtin_popcount (x);
# endif
}
static inline int
floor_log2 (unsigned HOST_WIDE_INT x)
{
return HOST_BITS_PER_WIDE_INT - 1 - clz_hwi (x);
}
static inline int
ceil_log2 (unsigned HOST_WIDE_INT x)
{
return floor_log2 (x - 1) + 1;
}
static inline int
exact_log2 (unsigned HOST_WIDE_INT x)
{
return x == (x & -x) && x ? ctz_hwi (x) : -1;
}
#endif /* GCC_VERSION >= 3004 */
#define HOST_WIDE_INT_MIN (HOST_WIDE_INT) \
((unsigned HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT - 1))
#define HOST_WIDE_INT_MAX (~(HOST_WIDE_INT_MIN))
extern HOST_WIDE_INT abs_hwi (HOST_WIDE_INT);
extern unsigned HOST_WIDE_INT absu_hwi (HOST_WIDE_INT);
extern HOST_WIDE_INT gcd (HOST_WIDE_INT, HOST_WIDE_INT);
extern HOST_WIDE_INT pos_mul_hwi (HOST_WIDE_INT, HOST_WIDE_INT);
extern HOST_WIDE_INT mul_hwi (HOST_WIDE_INT, HOST_WIDE_INT);
extern HOST_WIDE_INT least_common_multiple (HOST_WIDE_INT, HOST_WIDE_INT);
/* Sign extend SRC starting from PREC. */
static inline HOST_WIDE_INT
sext_hwi (HOST_WIDE_INT src, unsigned int prec)
{
if (prec == HOST_BITS_PER_WIDE_INT)
return src;
else
{
gcc_checking_assert (prec < HOST_BITS_PER_WIDE_INT);
int shift = HOST_BITS_PER_WIDE_INT - prec;
return (src << shift) >> shift;
}
}
/* Zero extend SRC starting from PREC. */
static inline unsigned HOST_WIDE_INT
zext_hwi (unsigned HOST_WIDE_INT src, unsigned int prec)
{
if (prec == HOST_BITS_PER_WIDE_INT)
return src;
else
{
gcc_checking_assert (prec < HOST_BITS_PER_WIDE_INT);
return src & (((unsigned HOST_WIDE_INT) 1 << prec) - 1);
}
}
#endif /* ! GCC_HWINT_H */