Ruby

Eliminate useless catch tables and nops from lambdas

Before this commit:

$ ruby --dump=insn -e '1.times { |x| puts x }'
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,22)> (catch: FALSE)
== catch table
| catch type: break  st: 0000 ed: 0004 sp: 0000 cont: 0004
| == disasm: #<ISeq:block in <main>@-e:1 (1,8)-(1,22)> (catch: FALSE)
| == catch table
| | catch type: redo   st: 0001 ed: 0006 sp: 0000 cont: 0001
| | catch type: next   st: 0001 ed: 0006 sp: 0000 cont: 0006
| |------------------------------------------------------------------------
| local table (size: 1, argc: 1 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
| [ 1] x@0<Arg>
| 0000 nop                                                              (   1)[Bc]
| 0001 putself                                [Li]
| 0002 getlocal_WC_0                          x@0
| 0004 opt_send_without_block                 <calldata!mid:puts, argc:1, FCALL|ARGS_SIMPLE>
| 0006 leave                                  [Br]
|------------------------------------------------------------------------
0000 putobject_INT2FIX_1_                                             (   1)[Li]
0001 send                                   <calldata!mid:times, argc:0>, block in <main>
0004 leave

After this commit:

> ruby --dump=insn -e '1.times { |x| puts x }'
== disasm: #<ISeq:<main>@-e:1 (1,0)-(1,22)> (catch: FALSE)
0000 putobject_INT2FIX_1_                                             (   1)[Li]
0001 send                                   <calldata!mid:times, argc:0>, block in <main>
0004 leave

== disasm: #<ISeq:block in <main>@-e:1 (1,8)-(1,22)> (catch: FALSE)
local table (size: 1, argc: 1 [opts: 0, rest: -1, post: 0, block: -1, kw: -1@-1, kwrest: -1])
[ 1] x@0<Arg>
0000 putself                                                          (   1)[LiBc]
0001 getlocal_WC_0                          x@0
0003 opt_send_without_block                 <calldata!mid:puts, argc:1, FCALL|ARGS_SIMPLE>
0005 leave

Fixes [ruby-core:102418] [Feature #17613]

Co-Authored-By: Alan Wu [email protected]