[perf] more latency improvements

perf/time_to_first_solve/script.jl

@@ -80,3 +80,9 @@ if length(ARGS) > 0
     end
     exit(0)
 end
+
+# using SnoopCompileCore
+# tinf = @snoopi_deep example_diet(Clp.Optimizer, true)
+# using SnoopCompile, ProfileView
+# fg = flamegraph(tinf)
+# ProfileView.view(fg)

src/Bridges/Bridges.jl

@@ -175,4 +175,8 @@ function Base.show(io::IO, B::AbstractBridgeOptimizer)
     return
 end
 
+if VERSION > v"1.4.2"
+    include("precompile.jl")
+end
+
 end

src/Bridges/precompile.jl

@@ -0,0 +1,14 @@
+function _precompile_()
+    ccall(:jl_generating_output, Cint, ()) == 1 || return nothing
+    Base.precompile(
+        full_bridge_optimizer,
+        (MOI.AbstractOptimizer, Type{Float64}),
+    )
+    Base.precompile(
+        unbridged_function,
+        (LazyBridgeOptimizer, MOI.AbstractScalarFunction),
+    )   # time: 0.1381832
+    return
+end
+
+_precompile_()

src/Utilities/precompile.jl

@@ -40,5 +40,6 @@ function _precompile_()
         CachingOptimizer{MOI.AbstractOptimizer,UniversalFallback{Model{T}}},
         constraints,
     )
+    Base.precompile(UniversalFallback, (Model{T},))
     return
 end

src/Utilities/universalfallback.jl

@@ -29,7 +29,7 @@ mutable struct UniversalFallback{MT} <: MOI.ModelLike
         return new{typeof(model)}(
             model,
             nothing,
-            OrderedDict{Tuple{Type,Type},OrderedDict}(),
+            OrderedDict{Type,OrderedDict}(),
             OrderedDict{Tuple{Type,Type},VectorOfConstraints}(),
             Dict{MOI.ConstraintIndex,String}(),
             nothing,