merge revision(s) 66324: [Backport #15385]
Modify insn list only when compiling
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@67708 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 66324: [Backport #15385]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@67708 b2dd03c8-39d4-4d8f-98ff-823fe69b080e