/* HOST_WIDE_INT definitions for the GNU compiler.
- Copyright (C) 1998, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1998, 2002, 2004, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GCC.
#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
/* Various printf format strings for HOST_WIDE_INT. */
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
-# define HOST_WIDE_INT_PRINT_DEC "%ld"
-# define HOST_WIDE_INT_PRINT_DEC_C "%ldL"
-# define HOST_WIDE_INT_PRINT_DEC_SPACE "% *ld"
-# define HOST_WIDE_INT_PRINT_UNSIGNED "%lu"
-# define HOST_WIDE_INT_PRINT_UNSIGNED_SPACE "% *lu"
-# define HOST_WIDE_INT_PRINT_HEX "0x%lx"
+# define HOST_WIDE_INT_PRINT HOST_LONG_FORMAT
+# define HOST_WIDE_INT_PRINT_C "L"
/* 'long' might be 32 or 64 bits, and the number of leading zeroes
must be tweaked accordingly. */
# if HOST_BITS_PER_WIDE_INT == 64
-# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx"
+# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
+ "0x%" HOST_LONG_FORMAT "x%016" HOST_LONG_FORMAT "x"
# else
-# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
+# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
+ "0x%" HOST_LONG_FORMAT "x%08" HOST_LONG_FORMAT "x"
# endif
#else
-# define HOST_WIDE_INT_PRINT_DEC "%lld"
-# define HOST_WIDE_INT_PRINT_DEC_C "%lldLL"
-# define HOST_WIDE_INT_PRINT_DEC_SPACE "% *lld"
-# define HOST_WIDE_INT_PRINT_UNSIGNED "%llu"
-# define HOST_WIDE_INT_PRINT_UNSIGNED_SPACE "% *llu"
-# define HOST_WIDE_INT_PRINT_HEX "0x%llx"
+# define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT
+# define HOST_WIDE_INT_PRINT_C "LL"
/* We can assume that 'long long' is at least 64 bits. */
-# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%016llx"
-#endif
+# define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
+ "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x"
+#endif /* HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG */
+
+#define HOST_WIDE_INT_PRINT_DEC "%" HOST_WIDE_INT_PRINT "d"
+#define HOST_WIDE_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC HOST_WIDE_INT_PRINT_C
+#define HOST_WIDE_INT_PRINT_UNSIGNED "%" HOST_WIDE_INT_PRINT "u"
+#define HOST_WIDE_INT_PRINT_HEX "%#" HOST_WIDE_INT_PRINT "x"
/* Set HOST_WIDEST_INT. This is a 64-bit type unless the compiler
in use has no 64-bit type at all; in that case it's 32 bits. */
|| (HOST_BITS_PER_LONGLONG < 64 && HOST_BITS_PER___INT64 < 64)
# define HOST_WIDEST_INT HOST_WIDE_INT
# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_WIDE_INT
+# define HOST_WIDEST_INT_PRINT HOST_WIDE_INT_PRINT
# define HOST_WIDEST_INT_PRINT_DEC HOST_WIDE_INT_PRINT_DEC
# define HOST_WIDEST_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC_C
-# define HOST_WIDEST_INT_PRINT_DEC_SPACE HOST_WIDE_INT_PRINT_DEC_SPACE
# define HOST_WIDEST_INT_PRINT_UNSIGNED HOST_WIDE_INT_PRINT_UNSIGNED
-# define HOST_WIDEST_INT_PRINT_UNSIGNED_SPACE HOST_WIDE_INT_PRINT_UNSIGNED_SPACE
# define HOST_WIDEST_INT_PRINT_HEX HOST_WIDE_INT_PRINT_HEX
# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX HOST_WIDE_INT_PRINT_DOUBLE_HEX
#else
#error "This line should be impossible to reach"
# endif
# endif
-# define HOST_WIDEST_INT_PRINT_DEC "%lld"
-# define HOST_WIDEST_INT_PRINT_DEC_C "%lldLL"
-# define HOST_WIDEST_INT_PRINT_DEC_SPACE "% *lld"
-# define HOST_WIDEST_INT_PRINT_UNSIGNED "%llu"
-# define HOST_WIDEST_INT_PRINT_UNSIGNED_SPACE "% *llu"
-# define HOST_WIDEST_INT_PRINT_HEX "0x%llx"
-# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX "0x%llx%016llx"
+# define HOST_WIDEST_INT_PRINT HOST_LONG_LONG_FORMAT
+# define HOST_WIDEST_INT_PRINT_DEC "%" HOST_LONG_LONG_FORMAT "d"
+# define HOST_WIDEST_INT_PRINT_DEC_C "%" HOST_LONG_LONG_FORMAT "dLL"
+# define HOST_WIDEST_INT_PRINT_UNSIGNED "%" HOST_LONG_LONG_FORMAT "u"
+# define HOST_WIDEST_INT_PRINT_HEX "%#" HOST_LONG_LONG_FORMAT "x"
+# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX \
+ "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x"
+#endif
+
+/* 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
+# elif defined (HAVE___INT64)
+# define HOST_WIDEST_FAST_INT __int64
+# define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER___INT64
+# else
+# error "Your host said it wanted to use long long or __int64 but neither"
+# error "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 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);
+
+#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
+floor_log2 (unsigned HOST_WIDE_INT x)
+{
+ return HOST_BITS_PER_WIDE_INT - 1 - clz_hwi (x);
+}
+
+static inline int
+exact_log2 (unsigned HOST_WIDE_INT x)
+{
+ return x == (x & -x) && x ? ctz_hwi (x) : -1;
+}
+
+#endif /* GCC_VERSION >= 3004 */
+
+/* Compute the greatest common divisor of two numbers using
+ Euclid's algorithm. */
+
+static inline int
+gcd (int a, int b)
+{
+ int x, y, z;
+
+ x = abs (a);
+ y = abs (b);
+
+ while (x > 0)
+ {
+ z = y % x;
+ y = x;
+ x = z;
+ }
+
+ return y;
+}
+
+/* Compute the least common multiple of two numbers A and B . */
+
+static inline int
+least_common_multiple (int a, int b)
+{
+ return (abs (a) * abs (b) / gcd (a, b));
+}
+
#endif /* ! GCC_HWINT_H */
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