[PATCH] D75505: [InstCombine] Enhance cast-of-load->load-of-bitcast fold to handle multiple identical casts

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In D75505#1903785 <https://reviews.llvm.org/D75505#1903785>, @lebedev.ri wrote:

> Hm, why SimplifyCFG?
>  I'm aware that we (still) don't have specialized hoisting/sinking pass..


Time to change that? :)
I was just grepping around in SimplifyCFG and saw that it has hoisting transforms gated by instruction costs, so I thought maybe there's a way to squeeze this into the existing code, but I know that's a stretch too.


Repository:
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https://reviews.llvm.org/D75505