<feed xmlns='http://www.w3.org/2005/Atom'>
<title>ruby.git/test/ruby/test_optimization.rb, branch v3_4_9</title>
<subtitle>The Ruby Programming Language</subtitle>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/'/>
<entry>
<title>Optimize instructions when creating an array just to call `include?` (#12123)</title>
<updated>2024-11-26T19:31:08+00:00</updated>
<author>
<name>Randy Stauner</name>
<email>randy.stauner@shopify.com</email>
</author>
<published>2024-11-26T19:31:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=1dd40ec18a55ff46f52d0ba44ff5d7923f57c08f'/>
<id>1dd40ec18a55ff46f52d0ba44ff5d7923f57c08f</id>
<content type='text'>
* Add opt_duparray_send insn to skip the allocation on `#include?`

If the method isn't going to modify the array we don't need to copy it.
This avoids the allocation / array copy for things like `[:a, :b].include?(x)`.

This adds a BOP for include? and tracks redefinition for it on Array.

Co-authored-by: Andrew Novoselac &lt;andrew.novoselac@shopify.com&gt;

* YJIT: Implement opt_duparray_send include_p

Co-authored-by: Andrew Novoselac &lt;andrew.novoselac@shopify.com&gt;

* Update opt_newarray_send to support simple forms of include?(arg)

Similar to opt_duparray_send but for non-static arrays.

* YJIT: Implement opt_newarray_send include_p

---------

Co-authored-by: Andrew Novoselac &lt;andrew.novoselac@shopify.com&gt;</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
* Add opt_duparray_send insn to skip the allocation on `#include?`

If the method isn't going to modify the array we don't need to copy it.
This avoids the allocation / array copy for things like `[:a, :b].include?(x)`.

This adds a BOP for include? and tracks redefinition for it on Array.

Co-authored-by: Andrew Novoselac &lt;andrew.novoselac@shopify.com&gt;

* YJIT: Implement opt_duparray_send include_p

Co-authored-by: Andrew Novoselac &lt;andrew.novoselac@shopify.com&gt;

* Update opt_newarray_send to support simple forms of include?(arg)

Similar to opt_duparray_send but for non-static arrays.

* YJIT: Implement opt_newarray_send include_p

---------

Co-authored-by: Andrew Novoselac &lt;andrew.novoselac@shopify.com&gt;</pre>
</div>
</content>
</entry>
<entry>
<title>Optimized instruction for Hash#freeze</title>
<updated>2024-09-05T10:46:02+00:00</updated>
<author>
<name>Étienne Barrié</name>
<email>etienne.barrie@gmail.com</email>
</author>
<published>2024-08-05T10:31:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=bf9879791af11a20e50921551220c08d1c7f7f02'/>
<id>bf9879791af11a20e50921551220c08d1c7f7f02</id>
<content type='text'>
If a Hash which is empty or only using literals is frozen, we detect
this as a peephole optimization and change the instructions to be
`opt_hash_freeze`.

[Feature #20684]

Co-authored-by: Jean Boussier &lt;byroot@ruby-lang.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
If a Hash which is empty or only using literals is frozen, we detect
this as a peephole optimization and change the instructions to be
`opt_hash_freeze`.

[Feature #20684]

Co-authored-by: Jean Boussier &lt;byroot@ruby-lang.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Optimized instruction for Array#freeze</title>
<updated>2024-09-05T10:46:02+00:00</updated>
<author>
<name>Étienne Barrié</name>
<email>etienne.barrie@gmail.com</email>
</author>
<published>2024-07-29T10:15:02+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=a99707cd9c6a1d53cf8ebc883dc210219bd67a28'/>
<id>a99707cd9c6a1d53cf8ebc883dc210219bd67a28</id>
<content type='text'>
If an Array which is empty or only using literals is frozen, we detect
this as a peephole optimization and change the instructions to be
`opt_ary_freeze`.

[Feature #20684]

Co-authored-by: Jean Boussier &lt;byroot@ruby-lang.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
If an Array which is empty or only using literals is frozen, we detect
this as a peephole optimization and change the instructions to be
`opt_ary_freeze`.

[Feature #20684]

Co-authored-by: Jean Boussier &lt;byroot@ruby-lang.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Emit a performance warning when redefining specially optimized methods</title>
<updated>2024-04-15T16:21:41+00:00</updated>
<author>
<name>Jean Boussier</name>
<email>byroot@ruby-lang.org</email>
</author>
<published>2024-04-15T11:03:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=d019b3baec4485909e6727db2507f943e78f38ec'/>
<id>d019b3baec4485909e6727db2507f943e78f38ec</id>
<content type='text'>
This makes it easier to notice a dependency is causing interpreter or
JIT deoptimization.

```ruby
Warning[:performance] = true

class String
  def freeze
    super
  end
end
```

```
./test.rb:4: warning: Redefining 'String#freeze' disable multiple interpreter and JIT optimizations
```
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This makes it easier to notice a dependency is causing interpreter or
JIT deoptimization.

```ruby
Warning[:performance] = true

class String
  def freeze
    super
  end
end
```

```
./test.rb:4: warning: Redefining 'String#freeze' disable multiple interpreter and JIT optimizations
```
</pre>
</div>
</content>
</entry>
<entry>
<title>show warning for unused block</title>
<updated>2024-04-15T03:08:07+00:00</updated>
<author>
<name>Koichi Sasada</name>
<email>ko1@atdot.net</email>
</author>
<published>2024-03-26T22:29:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=9180e33ca3a5886fec3f9e0a2f48072b55914e65'/>
<id>9180e33ca3a5886fec3f9e0a2f48072b55914e65</id>
<content type='text'>
With verbopse mode (-w), the interpreter shows a warning if
a block is passed to a method which does not use the given block.

Warning on:

* the invoked method is written in C
* the invoked method is not `initialize`
* not invoked with `super`
* the first time on the call-site with the invoked method
  (`obj.foo{}` will be warned once if `foo` is same method)

[Feature #15554]

`Primitive.attr! :use_block` is introduced to declare that primitive
functions (written in C) will use passed block.

For minitest, test needs some tweak, so use
https://github.com/minitest/minitest/commit/ea9caafc0754b1d6236a490d59e624b53209734a
for `test-bundled-gems`.
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
With verbopse mode (-w), the interpreter shows a warning if
a block is passed to a method which does not use the given block.

Warning on:

* the invoked method is written in C
* the invoked method is not `initialize`
* not invoked with `super`
* the first time on the call-site with the invoked method
  (`obj.foo{}` will be warned once if `foo` is same method)

[Feature #15554]

`Primitive.attr! :use_block` is introduced to declare that primitive
functions (written in C) will use passed block.

For minitest, test needs some tweak, so use
https://github.com/minitest/minitest/commit/ea9caafc0754b1d6236a490d59e624b53209734a
for `test-bundled-gems`.
</pre>
</div>
</content>
</entry>
<entry>
<title>YJIT: Fix tailcall and JIT entry eating up FINISH frames (#9729)</title>
<updated>2024-01-29T17:21:17+00:00</updated>
<author>
<name>Alan Wu</name>
<email>XrXr@users.noreply.github.com</email>
</author>
<published>2024-01-29T17:21:17+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=b0711b1cf152afad0a480ee2f9bedd142a0d24ac'/>
<id>b0711b1cf152afad0a480ee2f9bedd142a0d24ac</id>
<content type='text'>
Suppose YJIT runs a rb_vm_opt_send_without_block()
fallback and the control frame stack looks like:

```
will_tailcall_bar [FINISH]
caller_that_used_fallback
```

will_tailcall_bar() runs in the interpreter and sets up a tailcall.
Right before JIT_EXEC() in the `send` instruction, the stack will look like:

```
bar [FINISH]
caller_that_used_fallback
```

Previously, JIT_EXEC() ran bar() in JIT code, which caused the `FINISH`
flag to return to the interpreter instead of to the JIT code running
caller_that_used_fallback(), causing code to run twice and probably
crash. Recent flaky failures on CI about "each stub expects a particular
iseq" are probably due to leaving methods twice in
`test_optimizations.rb`.

Only run JIT code from the interpreter if a new frame is pushed.</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Suppose YJIT runs a rb_vm_opt_send_without_block()
fallback and the control frame stack looks like:

```
will_tailcall_bar [FINISH]
caller_that_used_fallback
```

will_tailcall_bar() runs in the interpreter and sets up a tailcall.
Right before JIT_EXEC() in the `send` instruction, the stack will look like:

```
bar [FINISH]
caller_that_used_fallback
```

Previously, JIT_EXEC() ran bar() in JIT code, which caused the `FINISH`
flag to return to the interpreter instead of to the JIT code running
caller_that_used_fallback(), causing code to run twice and probably
crash. Recent flaky failures on CI about "each stub expects a particular
iseq" are probably due to leaving methods twice in
`test_optimizations.rb`.

Only run JIT code from the interpreter if a new frame is pushed.</pre>
</div>
</content>
</entry>
<entry>
<title>YJIT: Fix cfp inconsistency on tailcall (#8107)</title>
<updated>2023-07-25T17:20:04+00:00</updated>
<author>
<name>Takashi Kokubun</name>
<email>takashikkbn@gmail.com</email>
</author>
<published>2023-07-25T17:20:04+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=e1104017e3080fd432c0b5fdc3ae6e004ffd0834'/>
<id>e1104017e3080fd432c0b5fdc3ae6e004ffd0834</id>
<content type='text'>
[Bug #19781]</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[Bug #19781]</pre>
</div>
</content>
</entry>
<entry>
<title>s/MJIT/RJIT/</title>
<updated>2023-03-07T07:44:01+00:00</updated>
<author>
<name>Takashi Kokubun</name>
<email>takashikkbn@gmail.com</email>
</author>
<published>2023-03-07T07:15:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=2e875549a934fa04b7939810fa0d8a2762702aaa'/>
<id>2e875549a934fa04b7939810fa0d8a2762702aaa</id>
<content type='text'>
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
</pre>
</div>
</content>
</entry>
<entry>
<title>Use omit instead of skip: test/ruby/**/*.rb</title>
<updated>2022-01-04T08:25:30+00:00</updated>
<author>
<name>Hiroshi SHIBATA</name>
<email>hsbt@ruby-lang.org</email>
</author>
<published>2022-01-04T08:25:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=47bf64a26d3d95a312ea5cf5d94ee1d2104f5e26'/>
<id>47bf64a26d3d95a312ea5cf5d94ee1d2104f5e26</id>
<content type='text'>
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
</pre>
</div>
</content>
</entry>
<entry>
<title>Prepare for removing RubyVM::JIT (#5262)</title>
<updated>2021-12-14T07:07:46+00:00</updated>
<author>
<name>Takashi Kokubun</name>
<email>takashikkbn@gmail.com</email>
</author>
<published>2021-12-14T07:07:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.ruby-lang.org/ruby.git/commit/?id=1a63468831524f68e73cbb068071652c6486cfc6'/>
<id>1a63468831524f68e73cbb068071652c6486cfc6</id>
<content type='text'>
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
</pre>
</div>
</content>
</entry>
</feed>
