GCC 3.3 release criteria

[Paolo Bonzini]

> If you need a certain register, use __asm__("reg").  Everything else is
> calling for trouble.

I agree.  Though for more control I'd like very much:

- __asm__() or __attribute__(always_register) for putting a variable into 
whatever register the compiler cares, but *in a register*

- __asm__(regclass) which can be very handy for example for reserving a branch 
register on the IA64.

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