[PATCH] D101538: [GlobalISel][IRTranslator] Make translate() methods virtual.

[Aleksandr Bezzubikov via Phabricator via llvm-commits]

zuban32 added a comment.

In D101538#2745606 <https://reviews.llvm.org/D101538#2745606>, @aemerson wrote:

> Is this really necessary? Our preference is to use custom combines/lowering passes, or custom legalization, to do this.

Well, our usecase might not be that canonical, let me briefly explain. For example, translating a bitcast - default IRTranslator implementation turns it into a COPY when LLTs of src and dst are the same. In our target (SPIR-V) LLTs do not matter that much, the typeinfo is represented with some pseudo instructions. That's why losing a bitcast in the translator doesn't work for us.


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  https://reviews.llvm.org/D101538/new/

https://reviews.llvm.org/D101538