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double-int.h (double_int_popcount): New inline function.

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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.

From-SVN: r189575
This commit is contained in:
Tom de Vries 2012-07-17 12:48:36 +00:00 committed by Tom de Vries
parent a86ec59783
commit 440b6d590a
4 changed files with 45 additions and 0 deletions

6
gcc/ChangeLog

@ -1,3 +1,9 @@
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

8
gcc/double-int.h

@ -284,6 +284,14 @@ double_int_equal_p (double_int cst1, double_int cst2)
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. */

16
gcc/hwint.c

@ -107,6 +107,22 @@ ffs_hwi (unsigned HOST_WIDE_INT x)
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. */

15
gcc/hwint.h

@ -179,6 +179,9 @@ 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);
@ -231,6 +234,18 @@ ffs_hwi (unsigned HOST_WIDE_INT 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)
{