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[pf3gnuchains/gcc-fork.git] / gcc / hwint.h

diff --git a/gcc/hwint.h b/gcc/hwint.h
index c7fcd34..f5e0bee 100644 (file)
--- a/gcc/hwint.h
+++ b/gcc/hwint.h
@@ -1,5 +1,6 @@
 /* HOST_WIDE_INT definitions for the GNU compiler.
-   Copyright (C) 1998, 2002, 2004, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2002, 2004, 2008, 2009, 2010
+   Free Software Foundation, Inc.
 
    This file is part of GCC.
 
@@ -78,6 +79,7 @@ extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
 # define HOST_WIDE_INT_PRINT HOST_LONG_FORMAT
 # define HOST_WIDE_INT_PRINT_C "L"
+# define HOST_WIDE_INT_1 1L
   /* 'long' might be 32 or 64 bits, and the number of leading zeroes
      must be tweaked accordingly.  */
 # if HOST_BITS_PER_WIDE_INT == 64
@@ -90,6 +92,7 @@ extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
 #else
 # define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT
 # define HOST_WIDE_INT_PRINT_C "LL"
+# define HOST_WIDE_INT_1 1LL
   /* We can assume that 'long long' is at least 64 bits.  */
 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
     "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x"
@@ -99,6 +102,7 @@ extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
 #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"
+#define HOST_WIDE_INT_PRINT_HEX_PURE "%" 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.  */
@@ -157,4 +161,85 @@ extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
 #  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 */
+
+#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);
+
 #endif /* ! GCC_HWINT_H */