non-local goto optimization

[Nathan Sidwell]

Eric Botcazou wrote:

> Moreover, going further than Richard, perhaps we can simply avoid adding yet 
> another bit to struct function altogether?  It is very little used.  What 
> about factoring the reload1.c code into a function and invoking it both from 
> there and from expand_builtin_unwind_init?

expand_builtin_unwind_init needs to *tell* reload something, I don't see how 
what you describe achieves that

nathan

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