* double-int.h (double_int_popcount): New inline function.
* hwint.c (popcount_hwi): New function.
* hwint.h (popcount_hwi): Declare function. New inline function.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@189575
138bc75d-0d04-0410-961f-
82ee72b054a4
+2012-07-17 Tom de Vries <tom@codesourcery.com>
+
+ * double-int.h (double_int_popcount): New inline function.
+ * hwint.c (popcount_hwi): New function.
+ * hwint.h (popcount_hwi): Declare function. New inline function.
+
2012-07-17 Richard Henderson <rth@redhat.com>
* tree-vect-stmts.c (supportable_widening_operation): Remove decl
return cst1.low == cst2.low && cst1.high == cst2.high;
}
+/* Return number of set bits of CST. */
+
+static inline int
+double_int_popcount (double_int cst)
+{
+ return popcount_hwi (cst.high) + popcount_hwi (cst.low);
+}
+
/* Legacy interface with decomposed high/low parts. */
return 1 + floor_log2 (x & -x);
}
+/* Return the number of set bits in X. */
+
+int
+popcount_hwi (unsigned HOST_WIDE_INT x)
+{
+ int i, ret = 0;
+
+ for (i = 0; i < sizeof (x); i += 1)
+ {
+ ret += x & 1;
+ x >>= 1;
+ }
+
+ return ret;
+}
+
#endif /* GCC_VERSION < 3004 */
/* Compute the absolute value of 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);
# 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)
{