Feature #15721: optimize comparison of special const

• Status: Open
• Assignee: -
• Target version: -

[masarakki (masaki yamada)]

Description

optimize comparison between special consts in comparable_by_identity.
it is called from == .

Benchmark

num_array = Array.new(1_000_000) { 1 }

num_array.include? nil 
 # 0.156 => 0.0089      # 20x faster!
num_array.include? :symbol 
 # 0.157 => 0.0086    # 20x faster!
num_array.include? 'str'
 # 0.185 => 0.183     # not faster because 'str' is not a special const