add benchmark for resolve-scopes (#286)

for JuliaLang/julia#43022

Author: JeffBezanson

src/BaseBenchmarks.jl

@@ -28,7 +28,8 @@ const MODULES = Dict("array" => :ArrayBenchmarks,
                      "sort" => :SortBenchmarks,
                      "sparse" => :SparseBenchmarks,
                      "string" => :StringBenchmarks,
-                     "tuple" => :TupleBenchmarks)
+                     "tuple" => :TupleBenchmarks,
+                     "frontend" => :FrontendBenchmarks)
 
 load!(id::AbstractString; kwargs...) = load!(SUITE, id; kwargs...)
 

src/frontend/FrontendBenchmarks.jl

@@ -0,0 +1,11 @@
+module FrontendBenchmarks
+
+using BenchmarkTools
+
+const SUITE = BenchmarkGroup(["nestedscopes"])
+
+nested_lets = :(:(()->$(Expr(:let, Expr(:block, Any[ Expr(:(=), Symbol("x$i"), :x1) for i = 1:2000 ]...), Expr(:block)))))
+
+SUITE["nestedscopes"] = @benchmarkable Meta.lower(@__MODULE__, $nested_lets)
+
+end