[LLVMdev] AbstractTypeUsers

Chris Lattner clattner at apple.com
Sat Jul 2 20:29:47 PDT 2011

On Jun 27, 2011, at 9:41 AM, Peter Lawrence wrote:

> Chris,
>            good to see the AbstractType stuff vaporize, but I still have a question, the Type system seems to have
> a "shadow type" system, every user Type created also has a corresponding XYZValType,  is the "shadow type"
> system still retained ?   It's purpose seems(?) to be for factoring the "unique-ing" logic out of the rest of the type
> system logic, but I'm wondering how much sense that makes (or perhaps I'm not looking at it correctly yet).

Hi Peter,

Most of that completely disappears and is replaced with simple DenseMaps.  It is much faster and easier to understand.


> sincerely,
> Peter Lawrence.
> On Jun 25, 2011, at 9:42 AM, llvmdev-request at cs.uiuc.edu wrote:
>> Once that lands, the constant uniquing is greatly simplified because AbstractType stuff all vaporizes.  When the branch lands, the constant uniquing maps should all be replaced with folding sets.
>> -Chris

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