On 08/04/2011 01:19 AM, Hans-Peter Nilsson wrote: > To make sure, it'd be nice if someone could perhaps grep an > entire GNU/Linux-or-other distribution including the kernel for > uses of asm-declared *local* registers that don't directly feed > into asms and not being the stack-pointer? Or can we get away > with just saying that local asm registers haven't had any other > documented meaning for the last seven years?
It's the sort of thing that gets done in threaded interpreters, where you really need to keep a few pointers in registers and the interpreter itself is a very long function. gcc has always done a dreadful job of register allocation in such cases. Andrew.
