Correct miscounting due to in-place modification during lifting

Author: Ian Atol

base/compiler/ssair/passes.jl

@@ -446,7 +446,9 @@ function lift_arg!(
     end
     if isa(lifted, GlobalRef) || isa(lifted, Expr)
         lifted = insert_node!(compact, leaf, effect_free(NewInstruction(lifted, argextype(lifted, compact))))
+        compact[leaf] = nothing
         stmt.args[argidx] = lifted
+        compact[leaf] = stmt
         if isa(leaf, SSAValue) && leaf.id < compact.result_idx
             push!(compact.late_fixup, leaf.id)
         end
@@ -781,6 +783,7 @@ function sroa_pass!(ir::IRCode)
                 continue
             end
             if !isempty(new_preserves)
+                compact[idx] = nothing
                 compact[idx] = form_new_preserves(stmt, preserved, new_preserves)
             end
             continue