Remove the private CLZ implementation in the GC.
This was a hold over from a time when the compiler did not properly
support the CLZ intrinsic.
Change-Id: I224481868c8d6fd3e0382d9cde3a2ffd02cfd39c
diff --git a/vm/Common.h b/vm/Common.h
index 19de943..7d8424e 100644
--- a/vm/Common.h
+++ b/vm/Common.h
@@ -45,6 +45,8 @@
#define ALIGN_UP_TO_PAGE_SIZE(p) ALIGN_UP(p, SYSTEM_PAGE_SIZE)
#define ALIGN_DOWN_TO_PAGE_SIZE(p) ALIGN_DOWN(p, SYSTEM_PAGE_SIZE)
+#define CLZ(x) __builtin_clz(x)
+
/*
* If "very verbose" logging is enabled, make it equivalent to LOGV.
* Otherwise, make it disappear.