On Fri, Oct 5, 2012 at 1:12 PM, Jason Merrill <ja...@redhat.com> wrote: > On 10/05/2012 03:46 PM, Xinliang David Li wrote: >> >> 1) As mentioned in this thread -- when the wrapper is inlined, the >> pure attribute will be lost. It will give compiler hard time to >> optimize away the guard code > > > The wrapper doesn't actually check the guard; that happens in the init > function, which is not inline. >
So init () will be unconditionally called on entry to the wrapper? In that case, you should probably go to the other extreme -- mark the wrapper as noinline and expanded as if they are builtins -- but run into the tricky issues of 'attributes' as discussed here. David > Jason >
