Use the gcc builtin instead, which generates more efficient code (it
saves a function call) and means less platform specific code to write
for us.
Change-Id: I1d55b5703027b2ea4ecde2438ea306bd4850eb32
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1859
Reviewed-by: waddlesplash <[email protected]>