From 49fcd33e136ee2fe8720183b63a41bb6ef8d615c Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 23 May 2024 11:23:26 -0700
Subject: Introduce a specialize instruction for Array#pack

Instructions for this code:

```ruby
  # frozen_string_literal: true

[a].pack("C")
```

Before this commit:

```
== disasm: #<ISeq:<main>@test.rb:1 (1,0)-(3,13)>
0000 putself                                                          (   3)[Li]
0001 opt_send_without_block                 <calldata!mid:a, argc:0, FCALL|VCALL|ARGS_SIMPLE>
0003 newarray                               1
0005 putobject                              "C"
0007 opt_send_without_block                 <calldata!mid:pack, argc:1, ARGS_SIMPLE>
0009 leave
```

After this commit:

```
== disasm: #<ISeq:<main>@test.rb:1 (1,0)-(3,13)>
0000 putself                                                          (   3)[Li]
0001 opt_send_without_block                 <calldata!mid:a, argc:0, FCALL|VCALL|ARGS_SIMPLE>
0003 putobject                              "C"
0005 opt_newarray_send                      2, :pack
0008 leave
```

Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com>
Co-authored-by: Aaron Patterson <tenderlove@ruby-lang.org>
---
 tool/rjit/bindgen.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tool')

diff --git a/tool/rjit/bindgen.rb b/tool/rjit/bindgen.rb
index fb6653ed9c..2fc4576216 100755
--- a/tool/rjit/bindgen.rb
+++ b/tool/rjit/bindgen.rb
@@ -540,6 +540,7 @@ generator = BindingGenerator.new(
     rb_vm_opt_newarray_min
     rb_vm_opt_newarray_max
     rb_vm_opt_newarray_hash
+    rb_vm_opt_newarray_pack
     rb_vm_setinstancevariable
     rb_vm_splat_array
     rjit_full_cfunc_return
-- 
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