gallium: add start_slot parameter to set_vertex_buffers

[mesa.git] / src / gallium / auxiliary / util / u_math.h

diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index 4047bd9b0162366e084ceb718335baeb2a166860..607fbecb02f5bd7d51dab8efff397e7b7688a99b 100644 (file)
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -482,12 +482,16 @@ unsigned ffs( unsigned u )
  */
 static INLINE unsigned util_last_bit(unsigned u)
 {
+#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304)
+   return u == 0 ? 0 : 32 - __builtin_clz(u);
+#else
    unsigned r = 0;
    while (u) {
        r++;
        u >>= 1;
    }
    return r;
+#endif
 }