[LLVMdev] thumb2 has divide instructions

Bagel bagel99 at gmail.com
Wed Dec 2 10:44:11 PST 2009

Anton Korobeynikov wrote:
> Hello
> "T2Divide" should be a subtarget feature bit. This way it can be
> "automatically" assigned to the procesor.

I agree this is a better approach.

> The instruction selection patterns for t2{S,U}DIV should be also
> guarded by this predicate.

Is this necessary?  Since the absence of the predicate causes lowering to 
expand divides, the pattern should never show up.

> Also, for cortex-m3 it will be nice to have separate V7M feature profile.

Agreed.  Now how do we get this done?

regards, bagel

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