[PATCH] D82249: [HWASan] Disable GlobalISel/FastISel for HWASan Globals.

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D82249#2107845 <https://reviews.llvm.org/D82249#2107845>, @hctim wrote:

> In D82249#2105036 <https://reviews.llvm.org/D82249#2105036>, @arsenm wrote:
>
> > Is the fallback not working correctly in this case for some reason?
>
>
> I'm fairly sure that G_GLOBAL_VALUE used to fallback onto SelectionDAGISel, and that was changed in D78465 <https://reviews.llvm.org/D78465>. Because we only implemented the custom `adrp+movk` lowering in SelectionDAGISel, making that instruction sequence no longer fallback, so we don't get our proper lowering for HWASan globals.


I don't follow. It no longer falls back, so what is the problem?


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  https://reviews.llvm.org/D82249/new/

https://reviews.llvm.org/D82249