gistfile1.txt

% ruby -v                                                                                                                           ~/study/ruby
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin17]
% ruby  instrument.rb                                                                                                               ~/study/ruby
== disasm: #<ISeq:<main>@./test_condition.rb:1 (1,0)-(7,10)>============
local table (size: 1, argc: 0 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
[ 1] a          
0000 putstring        "aaa"                                           (   1)[Li]
0002 setlocal         a, 0
0005 getlocal         a, 0                                            (   2)[Li]
0008 putstring        "bbb"
0010 send             <callinfo!mid:==, argc:1, ARGS_SIMPLE>, <callcache>, nil
0014 branchunless     18
0016 jump             31
0018 getlocal         a, 0
0021 putstring        "ccc"
0023 send             <callinfo!mid:==, argc:1, ARGS_SIMPLE>, <callcache>, nil
0027 branchunless     39
0029 jump             31
0031 getlocal         a, 0                                            (   3)[Li]
0034 setlocal         a, 0
0037 jump             47                                              (   2)
0039 putself                                                          (   5)[Li]
0040 putstring        "OK"
0042 send             <callinfo!mid:puts, argc:1, FCALL|ARGS_SIMPLE>, <callcache>, nil
0046 pop              
0047 putself                                                          (   7)[Li]
0048 putstring        "END"
0050 send             <callinfo!mid:puts, argc:1, FCALL|ARGS_SIMPLE>, <callcache>, nil
0054 leave



% ruby -v                                                                                                                           ~/study/ruby
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
[haruyama.makoto@o-08645-mac] (master)✗ (gke_dena-rerep-live-sb-gcp_asia-northeast1-b_live-sandbox3)
% ruby instrument.rb                                                                                                                ~/study/ruby
== disasm: #<ISeq:<main>@./test_condition.rb:1 (1,0)-(7,10)> (catch: FALSE)
local table (size: 1, argc: 0 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
[ 1] a@0
0000 putstring                    "aaa"                               (   1)[Li]
0002 setlocal                     a@0, 0
0005 getlocal                     a@0, 0                              (   2)[Li]
0008 putstring                    "bbb"
0010 send                         <callinfo!mid:==, argc:1, ARGS_SIMPLE>, <callcache>, nil
0014 branchunless                 18
0016 jump                         31
0018 getlocal                     a@0, 0
0021 putstring                    "ccc"
0023 send                         <callinfo!mid:==, argc:1, ARGS_SIMPLE>, <callcache>, nil
0027 branchunless                 39
0029 jump                         31
0031 getlocal                     a@0, 0                              (   3)[Li]
0034 setlocal                     a@0, 0
0037 jump                         47                                  (   2)
0039 putself                                                          (   5)[Li]
0040 putstring                    "OK"
0042 send                         <callinfo!mid:puts, argc:1, FCALL|ARGS_SIMPLE>, <callcache>, nil
0046 pop
0047 putself                                                          (   7)[Li]
0048 putstring                    "END"
0050 send                         <callinfo!mid:puts, argc:1, FCALL|ARGS_SIMPLE>, <callcache>, nil
0054 leave

a = "aaa"
if a == "bbb" || a == "ccc" then
    a = a
else
    puts "OK"
end
puts "END"