diff --git a/docs/Manifest.toml b/docs/Manifest.toml
deleted file mode 100644
index 5345789..0000000
--- a/docs/Manifest.toml
+++ /dev/null
@@ -1,93 +0,0 @@
-# This file is machine-generated - editing it directly is not advised
-
-[[Base64]]
-uuid = "2a0f44e3-6c83-55bd-87e4-b1978d98bd5f"
-
-[[Dates]]
-deps = ["Printf"]
-uuid = "ade2ca70-3891-5945-98fb-dc099432e06a"
-
-[[Distributed]]
-deps = ["Random", "Serialization", "Sockets"]
-uuid = "8ba89e20-285c-5b6f-9357-94700520ee1b"
-
-[[DocStringExtensions]]
-deps = ["LibGit2", "Markdown", "Pkg", "Test"]
-git-tree-sha1 = "88bb0edb352b16608036faadcc071adda068582a"
-uuid = "ffbed154-4ef7-542d-bbb7-c09d3a79fcae"
-version = "0.8.1"
-
-[[Documenter]]
-deps = ["Base64", "Dates", "DocStringExtensions", "InteractiveUtils", "JSON", "LibGit2", "Logging", "Markdown", "REPL", "Test", "Unicode"]
-git-tree-sha1 = "395fa1554c69735802bba37d9e7d9586fd44326c"
-uuid = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
-version = "0.24.11"
-
-[[InteractiveUtils]]
-deps = ["Markdown"]
-uuid = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
-
-[[JSON]]
-deps = ["Dates", "Mmap", "Parsers", "Unicode"]
-git-tree-sha1 = "b34d7cef7b337321e97d22242c3c2b91f476748e"
-uuid = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
-version = "0.21.0"
-
-[[LibGit2]]
-deps = ["Printf"]
-uuid = "76f85450-5226-5b5a-8eaa-529ad045b433"
-
-[[Libdl]]
-uuid = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
-
-[[Logging]]
-uuid = "56ddb016-857b-54e1-b83d-db4d58db5568"
-
-[[Markdown]]
-deps = ["Base64"]
-uuid = "d6f4376e-aef5-505a-96c1-9c027394607a"
-
-[[Mmap]]
-uuid = "a63ad114-7e13-5084-954f-fe012c677804"
-
-[[Parsers]]
-deps = ["Dates", "Test"]
-git-tree-sha1 = "72c3451932513427caffbd8bab15643ad693804b"
-uuid = "69de0a69-1ddd-5017-9359-2bf0b02dc9f0"
-version = "1.0.3"
-
-[[Pkg]]
-deps = ["Dates", "LibGit2", "Libdl", "Logging", "Markdown", "Printf", "REPL", "Random", "SHA", "UUIDs"]
-uuid = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
-
-[[Printf]]
-deps = ["Unicode"]
-uuid = "de0858da-6303-5e67-8744-51eddeeeb8d7"
-
-[[REPL]]
-deps = ["InteractiveUtils", "Markdown", "Sockets"]
-uuid = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
-
-[[Random]]
-deps = ["Serialization"]
-uuid = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
-
-[[SHA]]
-uuid = "ea8e919c-243c-51af-8825-aaa63cd721ce"
-
-[[Serialization]]
-uuid = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
-
-[[Sockets]]
-uuid = "6462fe0b-24de-5631-8697-dd941f90decc"
-
-[[Test]]
-deps = ["Distributed", "InteractiveUtils", "Logging", "Random"]
-uuid = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
-
-[[UUIDs]]
-deps = ["Random", "SHA"]
-uuid = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
-
-[[Unicode]]
-uuid = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"
diff --git a/src/MethodAnalysis.jl b/src/MethodAnalysis.jl
index 73c3ef2..d471480 100644
--- a/src/MethodAnalysis.jl
+++ b/src/MethodAnalysis.jl
@@ -11,8 +11,9 @@ export visit_backedges, all_backedges, with_all_backedges, terminal_backedges, d
 include("visit.jl")
 include("backedges.jl")
 
-## Move to Base?
-Base.:(==)(stmt1::Core.PhiNode, stmt2::Core.PhiNode) = stmt1.edges == stmt2.edges && stmt1.values == stmt2.values
+if !hasmethod(==, Tuple{Core.PhiNode,Core.PhiNode})
+    Base.:(==)(stmt1::Core.PhiNode, stmt2::Core.PhiNode) = stmt1.edges == stmt2.edges && stmt1.values == stmt2.values
+end
 
 """
     call_type(tt)
@@ -52,7 +53,7 @@ function equal(ci1::Core.CodeInfo, ci2::Core.CodeInfo)
           ci1.ssavaluetypes == ci2.ssavaluetypes &&
           ci1.ssaflags == ci2.ssaflags &&
           ci1.method_for_inference_limit_heuristics == ci2.method_for_inference_limit_heuristics &&
-          ci1.linetable == ci2.linetable &&           
+          ci1.linetable == ci2.linetable &&
           ci1.slotnames == ci2.slotnames &&
           ci1.slotflags == ci2.slotflags
     if VERSION >= v"1.2"