More aggressive SROA considering uses of new_new_nodes

Author: Keno

base/compiler/ssair/inlining.jl

@@ -371,7 +371,6 @@ function ir_inline_item!(compact::IncrementalCompact, idx::Int, argexprs::Vector
             stmt′ = ssa_substitute!(idx′, stmt′, argexprs, sig, sparam_vals, linetable_offset, boundscheck, compact)
             if isa(stmt′, ReturnNode)
                 val = stmt′.val
-                isa(val, SSAValue) && (compact.used_ssas[val.id] += 1)
                 return_value = SSAValue(idx′)
                 inline_compact[idx′] = val
                 inline_compact.result[idx′][:type] =
@@ -428,13 +427,6 @@ function ir_inline_item!(compact::IncrementalCompact, idx::Int, argexprs::Vector
         just_fixup!(inline_compact)
         compact.result_idx = inline_compact.result_idx
         compact.active_result_bb = inline_compact.active_result_bb
-        for i = 1:length(pn.values)
-            isassigned(pn.values, i) || continue
-            v = pn.values[i]
-            if isa(v, SSAValue)
-                compact.used_ssas[v.id] += 1
-            end
-        end
         if length(pn.edges) == 1
             return_value = pn.values[1]
         else