Annotate @doc metadata when a function is inlined

lib/elixir/lib/atom.ex

@@ -16,6 +16,7 @@ defmodule Atom do
       "foo"
 
   """
+  @doc inlined: true
   @spec to_string(atom) :: String.t()
   def to_string(atom) do
     :erlang.atom_to_binary(atom, :utf8)
@@ -32,6 +33,7 @@ defmodule Atom do
       'An atom'
 
   """
+  @doc inlined: true
   @spec to_charlist(atom) :: charlist
   def to_charlist(atom) do
     :erlang.atom_to_list(atom)

lib/elixir/lib/function.ex

@@ -32,7 +32,7 @@ defmodule Function do
       &String.length/1
 
   """
-  @doc since: "1.7.0"
+  @doc since: "1.7.0", inlined: true
   @spec capture(module, atom, arity) :: fun
   def capture(module, function_name, arity) do
     :erlang.make_fun(module, function_name, arity)
@@ -93,7 +93,7 @@ defmodule Function do
       :length
 
   """
-  @doc since: "1.7.0"
+  @doc since: "1.7.0", inlined: true
   @spec info(fun) :: [{information, term}]
   def info(fun), do: :erlang.fun_info(fun)
 
@@ -131,7 +131,7 @@ defmodule Function do
       {:pid, :undefined}
 
   """
-  @doc since: "1.7.0"
+  @doc since: "1.7.0", inlined: true
   @spec info(fun, item) :: {item, term} when item: information
   def info(fun, item), do: :erlang.fun_info(fun, item)
 end

lib/elixir/lib/integer.ex

@@ -290,6 +290,7 @@ defmodule Integer do
       "123"
 
   """
+  @doc inlined: true
   @spec to_string(integer) :: String.t()
   def to_string(integer) do
     :erlang.integer_to_binary(integer)
@@ -315,6 +316,7 @@ defmodule Integer do
       "ELIXIR"
 
   """
+  @doc inlined: true
   @spec to_string(integer, 2..36) :: String.t()
   def to_string(integer, base) do
     :erlang.integer_to_binary(integer, base)
@@ -340,6 +342,7 @@ defmodule Integer do
       '123'
 
   """
+  @doc inlined: true
   @spec to_charlist(integer) :: charlist
   def to_charlist(integer) do
     :erlang.integer_to_list(integer)
@@ -364,6 +367,7 @@ defmodule Integer do
       'ELIXIR'
 
   """
+  @doc inlined: true
   @spec to_charlist(integer, 2..36) :: charlist
   def to_charlist(integer, base) do
     :erlang.integer_to_list(integer, base)

lib/elixir/lib/io.ex

@@ -493,6 +493,7 @@ defmodule IO do
       <<1, 2, 3>>
 
   """
+  @doc inlined: true
   @spec iodata_to_binary(iodata) :: binary
   def iodata_to_binary(item) do
     :erlang.iolist_to_binary(item)
@@ -509,6 +510,7 @@ defmodule IO do
       4
 
   """
+  @doc inlined: true
   @spec iodata_length(iodata) :: non_neg_integer
   def iodata_length(item) do
     :erlang.iolist_size(item)

lib/elixir/lib/io/ansi/docs.ex

@@ -66,7 +66,7 @@ defmodule IO.ANSI.Docs do
     print_each_metadata(metadata, options) && IO.write("\n")
   end
 
-  @metadata_filter [:deprecated, :guard, :since]
+  @metadata_filter [:deprecated, :guard, :inlined, :since]
 
   defp print_each_metadata(metadata, options) do
     Enum.reduce(metadata, false, fn