GCC with __asm__ generic temporary register query

[Darryl Miles <darryl-mailinglists@xxxxxxxxxxxx>]

Hello,

Is it possible to ask GCC to allocate a register but not have to assign 
it a local variable (because its a temporary register used in the 
__asm__ block) ?

This way GCC knows that register is clobbered and allocated but does not 
need to generate any load or store to the local variable before/after 
the insertion of the __asm__ block.


The usual syntax would be like:
__asm__ __volatile__ (
"nop"
: "=r" ((local_output_var))
: "r" ((local_input_var))
: /* clobber list */
);

I'd essentially asking to do away with the "((local_foobar_var))" part, 
since I just want a register substituted for "%0" and/or "%1" that is 
not reciprocated with a C variable.

Thanks,

Darryl