craig.topper added a comment.

In D152279#4612087 <https://reviews.llvm.org/D152279#4612087>, @MaskRay wrote:

> I am still interested in moving this forward. What should be done here? If 
> the decision is to keep the current odd default 8 for 
> `toolchains::RISCVToolChain`, I guess I'll have to take the compromise as 
> making a step forward is better than nothing.

On 1 RV64 CPU I tried in our RTL simulator, changing from 8 to 0 reduced 
dhrystone score by 2.7%. Using 16, or 32 gave the same score as 8. Reducing 8 
to 4 improved the score by 0.5%.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152279/new/

https://reviews.llvm.org/D152279

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