MonetDB: Jul2017 - Use GCC builtin function for pop count.

[Sjoerd Mullender]

Changeset: d93524047979 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=d93524047979
Modified Files:
        gdk/gdk_group.c
Branch: Jul2017
Log Message:

Use GCC builtin function for pop count.


diffs (25 lines):

diff --git a/gdk/gdk_group.c b/gdk/gdk_group.c
--- a/gdk/gdk_group.c
+++ b/gdk/gdk_group.c
@@ -353,6 +353,13 @@ rev(oid x)
 }
 
 /* population count: count number of 1 bits in a value */
+#ifdef __GNUC__
+#if SIZEOF_OID == SIZEOF_INT
+#define pop(x)         __builtin_popcount(x)
+#else
+#define pop(x)         __builtin_popcountl(x)
+#endif
+#else
 static inline int
 pop(oid x)
 {
@@ -373,6 +380,7 @@ pop(oid x)
 #endif
        return (int) x;
 }
+#endif
 
 #define GRP_create_partial_hash_table_core(INIT_1,HASH,COMP,ASSERT,GRPTST) \
        do {                                                            \
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