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Re: [PATCH] Fix PR32921, prune virtual operands of memory accesses based on TBAA


> If I'm not mistaken, we don't rely on TYPE_REF_CAN_ALIAS_ALL for the core 
> language, we only use it for corner cases or special features.  

I believe that's correct.  Indeed I think it's hard to construct test cases
that would be triggered by a breakage in that area, though I have seen some
such cases. 


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