Re: constant pooling in GHC

I simply mean that the same constant is not emitted more than once to memory. I.e. If a constant string is used twice, there is only one value in .rodata for it. On Fri, Sep 21, 2018, 01:20 Carter Schonwald wrote:

what precisely do you mean by constant pooling? i can guess several meanings, but what do you mean specifically?

On Sat, Sep 15, 2018 at 10:33 AM Phyx wrote:

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Hi All,

I'm hoping someone here can save me some time. I'm working on something that relies on constants in the same translation unit being pooled before assembly.

I've noticed GHC does some const pooling at -O1 , but this doesn't seem to be very consistent, which leads me to believe this is a byproduct of another optimization rather than an explicit thing.

I couldn't find anything obvious in the sources, so does GHC intentionally do constant pooling already? Or do I need a new pass to guarantee it.

Thanks, Tamar

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