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| author | Tom de Vries <tom@codesourcery.com> | 2012-07-17 12:48:36 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2012-07-17 12:48:36 +0000 |
| commit | 440b6d590a8565358b3d603e27af8bd7db3fa27a (patch) | |
| tree | 95b0113f480da4289ca38b07f1d29157bae7e038 /gcc/hwint.c | |
| parent | a86ec59783d1630f46d758b27faf5c5fe061ecfe (diff) | |
| download | gcc-440b6d590a8565358b3d603e27af8bd7db3fa27a.zip gcc-440b6d590a8565358b3d603e27af8bd7db3fa27a.tar.gz gcc-440b6d590a8565358b3d603e27af8bd7db3fa27a.tar.bz2 | |
double-int.h (double_int_popcount): New inline function.
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
Diffstat (limited to 'gcc/hwint.c')
| -rw-r--r-- | gcc/hwint.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/hwint.c b/gcc/hwint.c index bfc5e3d..024fb7e 100644 --- a/gcc/hwint.c +++ b/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. */ |