nest additions

Author: chriselrod

Project.toml

@@ -1,7 +1,7 @@
 name = "LoopVectorization"
 uuid = "bdcacae8-1622-11e9-2a5c-532679323890"
 authors = ["Chris Elrod <[email protected]>"]
-version = "0.12.45"
+version = "0.12.46"
 
 [deps]
 ArrayInterface = "4fba245c-0d91-5ea0-9b3e-6abc04ee57a9"

src/vectorizationbase_compat/contract_pass.jl

@@ -43,11 +43,15 @@ function mulexpr(mulexargs)
     a, b
 end
 function append_args_skip!(call, args, i, mod)
-    for j ∈ eachindex(args)
-        j == i && continue
-        push!(call.args, args[j])
+  for j ∈ eachindex(args)
+    j == i && continue
+    if length(call.args) < 3
+      push!(call.args, args[j])
+    else
+      call = Expr(:call, :add_fast, call, args[j])
     end
-    call
+  end
+  call
 end
 
 function fastfunc(f)