[PATCH] D53994: Fixing lower bound regression in certain situations.

[JF Bastien via Phabricator]

jfb added a comment.

I'm surprised the codegen is so much worst, even with `__builtin_assume(l >= f);` it's bad. We'll look at improving LLVM's codegen for this, in the meantime I guess this patch is fine.


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  https://reviews.llvm.org/D53994/new/

https://reviews.llvm.org/D53994