constant pooling in GHC

[Carter Schonwald]

oh ok, so CSE / sharing for string and numerical literals?

On Fri, Sep 21, 2018 at 1:23 AM Phyx <lonetiger at gmail.com> wrote:

> 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 <carter.schonwald at gmail.com>
> 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 <lonetiger at gmail.com> wrote:
>>
>>> 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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>>
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