Move pass to stage 2 to not conflict with i8 legalization

Author: Icohedron

llvm/lib/Target/DirectX/DXILLegalizePass.cpp

@@ -649,14 +649,14 @@ class DXILLegalizationPipeline {
     LegalizationPipeline[Stage1].push_back(legalizeMemCpy);
     LegalizationPipeline[Stage1].push_back(removeMemSet);
     LegalizationPipeline[Stage1].push_back(updateFnegToFsub);
-    LegalizationPipeline[Stage1].push_back(legalizeLoadStoreOnArrayAllocas);
     // Note: legalizeGetHighLowi64Bytes and
     // downcastI64toI32InsertExtractElements both modify extractelement, so they
     // must run staggered stages. legalizeGetHighLowi64Bytes runs first b\c it
     // removes extractelements, reducing the number that
     // downcastI64toI32InsertExtractElements needs to handle.
     LegalizationPipeline[Stage2].push_back(
         downcastI64toI32InsertExtractElements);
+    LegalizationPipeline[Stage2].push_back(legalizeLoadStoreOnArrayAllocas);
   }
 };