On 08/12/2015 01:32 AM, Richard Earnshaw wrote:
> How do we clear the cache, and when?  For example, on ARM, switching
> between ARM and Thumb state means we need to generate potentially
> radically different sequences?  We can do such splitting at function
> boundaries now.

At present I never clear the cache.  Maybe we'll find that's a mistake.

For arm vs thumb I would start with just using two different caches.  The way
the code is structured currently, that would mean two different classes.  Which
could just be trivial wrappers around a common base class containing the
generator code.

> Can we generate different sequences for hot/cold code within a single
> function?

Not without using different caches.

> Can we cache sequences with the context (eg use with AND, OR, ADD, etc)?

No.  At least not without...


r~

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