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-rw-r--r--src/mesa/main/imports.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c
index 46ffb929b6..c9e00cf752 100644
--- a/src/mesa/main/imports.c
+++ b/src/mesa/main/imports.c
@@ -629,11 +629,15 @@ _mesa_ffsll(int64_t val)
unsigned int
_mesa_bitcount(unsigned int n)
{
+#if defined(__GNUC__)
+ return __builtin_popcount(n);
+#else
unsigned int bits;
for (bits = 0; n > 0; n = n >> 1) {
bits += (n & 1);
}
return bits;
+#endif
}