fixup! Rewrite late optimization pipeline to NewPM

Author: vchuravy

src/compiler/optimize.jl

@@ -383,7 +383,9 @@ function addOptimizationPasses!(mpm::LLVM.NewPMPassManager)
         # to simplification and deletion
         # this helps significantly with cleaning up iteration
         add!(fpm, SimplifyCFGPass())
-        add!(fpm, LoopDeletionPass())
+        add!(fpm, NewPMLoopPassManager()) do lpm
+            add!(lpm, LoopDeletionPass())
+        end
         add!(fpm, InstCombinePass())
         add!(fpm, JLInstSimplifyPass())
         add!(fpm, LoopVectorizePass())