[PATCH] D65921: [X86] Add DSB subtarget feature. NFC

Wed Aug 21 05:56:46 PDT 2019

RKSimon added a comment.

In D65921#1625064 <https://reviews.llvm.org/D65921#1625064>, @gpei wrote:

> In D65921#1620693 <https://reviews.llvm.org/D65921#1620693>, @RKSimon wrote:
>
> > Is there anything we can add as tests here?
>
>
> It's hard to add tests for this sub-target feature. Could you please give me an example?

How are you intending to use this feature? DSB is an uop-cache so are you intending to connect this to the instruction schedulers some how? Or is it going to affect instruction selection decisions?

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https://reviews.llvm.org/D65921