[llvm] [DirectX] Add a GEP to loads and stores on array allocas (PR #148059)

[Farzon Lotfi via llvm-commits]

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@@ -605,6 +649,7 @@ class DXILLegalizationPipeline {
     LegalizationPipeline[Stage1].push_back(legalizeMemCpy);
     LegalizationPipeline[Stage1].push_back(removeMemSet);
     LegalizationPipeline[Stage1].push_back(updateFnegToFsub);
+    LegalizationPipeline[Stage1].push_back(legalizeLoadStoreOnArrayAllocas);
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farzonl wrote:

That would be the easiest. I have thought about changing this to a set, but while i think that would fix the crashing I dunno if that would result in correct transformation because we would be making assumptions on stale results.

https://github.com/llvm/llvm-project/pull/148059