зеркало из https://github.com/github/ruby.git
58c1ebb634
* Fix guard-heap upgrades
`getinstancevariable` was generating more heap guards than I thought.
It turns out that the upgrade code has a bug in it.
Given the following Ruby code:
```ruby
class Foo
def initialize
@a = 1
@b = 1
end
def foo
[@a, @b]
end
end
foo = Foo.new
10.times { foo.foo }
puts RubyVM::YJIT.disasm Foo.instance_method(:foo)
```
Before this commit, the machine code was like this:
```
== BLOCK 1/4, ISEQ RANGE [0,3), 36 bytes ======================
# Insn: 0000 getinstancevariable (stack_size: 0)
0x5562fb831023: mov rax, qword ptr [r13 + 0x18]
# guard object is heap
0x5562fb831027: test al, 7
0x5562fb83102a: jne 0x5562fb833080
0x5562fb831030: test rax, rax
0x5562fb831033: je 0x5562fb833080
# guard shape
0x5562fb831039: cmp dword ptr [rax + 4], 0x18
0x5562fb83103d: jne 0x5562fb833062
# reg_temps: 00000000 -> 00000001
0x5562fb831043: mov rsi, qword ptr [rax + 0x10]
== BLOCK 2/4, ISEQ RANGE [3,6), 0 bytes =======================
== BLOCK 3/4, ISEQ RANGE [3,6), 36 bytes ======================
# regenerate_branch
# Insn: 0003 getinstancevariable (stack_size: 1)
# regenerate_branch
0x5562fb831047: mov rax, qword ptr [r13 + 0x18]
# guard object is heap
0x5562fb83104b: test al, 7
0x5562fb83104e: jne 0x5562fb8330db
0x5562fb831054: test rax, rax
0x5562fb831057: je 0x5562fb8330db
# guard shape
0x5562fb83105d: cmp dword ptr [rax + 4], 0x18
0x5562fb831061: jne 0x5562fb8330ba
# reg_temps: 00000001 -> 00000011
0x5562fb831067: mov rdi, qword ptr [rax + 0x18]
```
After this commit, the machine code has fewer guards for `self`:
```
== BLOCK 1/4, ISEQ RANGE [0,3), 36 bytes ======================
# Insn: 0000 getinstancevariable (stack_size: 0)
0x55cb5db5f023: mov rax, qword ptr [r13 + 0x18]
# guard object is heap
0x55cb5db5f027: test al, 7
0x55cb5db5f02a: jne 0x55cb5db61080
0x55cb5db5f030: test rax, rax
0x55cb5db5f033: je 0x55cb5db61080
# guard shape
0x55cb5db5f039: cmp dword ptr [rax + 4], 0x18
0x55cb5db5f03d: jne 0x55cb5db61062
# reg_temps: 00000000 -> 00000001
0x55cb5db5f043: mov rsi, qword ptr [rax + 0x10]
== BLOCK 2/4, ISEQ RANGE [3,6), 0 bytes =======================
== BLOCK 3/4, ISEQ RANGE [3,6), 18 bytes ======================
# regenerate_branch
# Insn: 0003 getinstancevariable (stack_size: 1)
# regenerate_branch
0x55cb5db5f047: mov rax, qword ptr [r13 + 0x18]
# guard shape
0x55cb5db5f04b: cmp dword ptr [rax + 4], 0x18
0x55cb5db5f04f: jne 0x55cb5db610ba
# reg_temps: 00000001 -> 00000011
0x55cb5db5f055: mov rdi, qword ptr [rax + 0x18]
```
Co-Authored-By: Takashi Kokubun <takashikkbn@gmail.com>
* Fix array/string guards as well
---------
Co-authored-by: Takashi Kokubun <takashikkbn@gmail.com>
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| .github | ||
| basictest | ||
| benchmark | ||
| bin | ||
| bootstraptest | ||
| ccan | ||
| coroutine | ||
| coverage | ||
| cygwin | ||
| defs | ||
| doc | ||
| enc | ||
| ext | ||
| gems | ||
| include | ||
| internal | ||
| lib | ||
| libexec | ||
| man | ||
| misc | ||
| missing | ||
| sample | ||
| spec | ||
| template | ||
| test | ||
| tool | ||
| wasm | ||
| win32 | ||
| yarp | ||
| yjit | ||
| .appveyor.yml | ||
| .cirrus.yml | ||
| .dir-locals.el | ||
| .document | ||
| .editorconfig | ||
| .gdbinit | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .indent.pro | ||
| .rdoc_options | ||
| .rspec_parallel | ||
| .travis.yml | ||
| BSDL | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| COPYING.ja | ||
| GPL | ||
| KNOWNBUGS.rb | ||
| LEGAL | ||
| NEWS.md | ||
| README.EXT | ||
| README.EXT.ja | ||
| README.ja.md | ||
| README.md | ||
| aclocal.m4 | ||
| addr2line.c | ||
| addr2line.h | ||
| array.c | ||
| array.rb | ||
| ast.c | ||
| ast.rb | ||
| autogen.sh | ||
| bignum.c | ||
| builtin.c | ||
| builtin.h | ||
| class.c | ||
| common.mk | ||
| compar.c | ||
| compile.c | ||
| complex.c | ||
| configure.ac | ||
| constant.h | ||
| cont.c | ||
| darray.h | ||
| debug.c | ||
| debug_counter.c | ||
| debug_counter.h | ||
| dir.c | ||
| dir.rb | ||
| dln.c | ||
| dln.h | ||
| dln_find.c | ||
| dmydln.c | ||
| dmyenc.c | ||
| dmyext.c | ||
| encindex.h | ||
| encoding.c | ||
| enum.c | ||
| enumerator.c | ||
| error.c | ||
| eval.c | ||
| eval_error.c | ||
| eval_intern.h | ||
| eval_jump.c | ||
| file.c | ||
| gc.c | ||
| gc.rb | ||
| gem_prelude.rb | ||
| golf_prelude.rb | ||
| goruby.c | ||
| hash.c | ||
| hrtime.h | ||
| id_table.c | ||
| id_table.h | ||
| inits.c | ||
| insns.def | ||
| internal.h | ||
| io.c | ||
| io.rb | ||
| io_buffer.c | ||
| iseq.c | ||
| iseq.h | ||
| kernel.rb | ||
| lex.c.blt | ||
| load.c | ||
| loadpath.c | ||
| localeinit.c | ||
| main.c | ||
| marshal.c | ||
| marshal.rb | ||
| math.c | ||
| memory_view.c | ||
| method.h | ||
| mini_builtin.c | ||
| miniinit.c | ||
| nilclass.rb | ||
| node.c | ||
| node.h | ||
| node_dump.c | ||
| numeric.c | ||
| numeric.rb | ||
| object.c | ||
| pack.c | ||
| pack.rb | ||
| parse.y | ||
| parser_bits.h | ||
| parser_node.h | ||
| parser_st.c | ||
| parser_st.h | ||
| parser_value.h | ||
| prelude.rb | ||
| probes.d | ||
| probes_helper.h | ||
| proc.c | ||
| process.c | ||
| ractor.c | ||
| ractor.rb | ||
| ractor_core.h | ||
| random.c | ||
| range.c | ||
| rational.c | ||
| re.c | ||
| regcomp.c | ||
| regenc.c | ||
| regenc.h | ||
| regerror.c | ||
| regexec.c | ||
| regint.h | ||
| regparse.c | ||
| regparse.h | ||
| regsyntax.c | ||
| rjit.c | ||
| rjit.h | ||
| rjit.rb | ||
| rjit_c.c | ||
| rjit_c.h | ||
| rjit_c.rb | ||
| ruby-runner.c | ||
| ruby.c | ||
| ruby_assert.h | ||
| ruby_atomic.h | ||
| ruby_parser.c | ||
| rubyparser.h | ||
| rubystub.c | ||
| scheduler.c | ||
| shape.c | ||
| shape.h | ||
| signal.c | ||
| siphash.c | ||
| siphash.h | ||
| sparc.c | ||
| sprintf.c | ||
| st.c | ||
| strftime.c | ||
| string.c | ||
| string.rb | ||
| struct.c | ||
| symbol.c | ||
| symbol.h | ||
| symbol.rb | ||
| thread.c | ||
| thread_none.c | ||
| thread_none.h | ||
| thread_pthread.c | ||
| thread_pthread.h | ||
| thread_sync.c | ||
| thread_sync.rb | ||
| thread_win32.c | ||
| thread_win32.h | ||
| time.c | ||
| timev.h | ||
| timev.rb | ||
| trace_point.rb | ||
| transcode.c | ||
| transcode_data.h | ||
| universal_parser.c | ||
| util.c | ||
| variable.c | ||
| variable.h | ||
| version.c | ||
| version.h | ||
| vm.c | ||
| vm_args.c | ||
| vm_backtrace.c | ||
| vm_callinfo.h | ||
| vm_core.h | ||
| vm_debug.h | ||
| vm_dump.c | ||
| vm_eval.c | ||
| vm_exec.c | ||
| vm_exec.h | ||
| vm_insnhelper.c | ||
| vm_insnhelper.h | ||
| vm_method.c | ||
| vm_opts.h | ||
| vm_sync.c | ||
| vm_sync.h | ||
| vm_trace.c | ||
| vsnprintf.c | ||
| warning.rb | ||
| weakmap.c | ||
| yjit.c | ||
| yjit.h | ||
| yjit.rb | ||
README.md
What is Ruby?
Ruby is an interpreted object-oriented programming language often used for web development. It also offers many scripting features to process plain text and serialized files, or manage system tasks. It is simple, straightforward, and extensible.
Features of Ruby
- Simple Syntax
- Normal Object-oriented Features (e.g. class, method calls)
- Advanced Object-oriented Features (e.g. mix-in, singleton-method)
- Operator Overloading
- Exception Handling
- Iterators and Closures
- Garbage Collection
- Dynamic Loading of Object Files (on some architectures)
- Highly Portable (works on many Unix-like/POSIX compatible platforms as well as Windows, macOS, etc.) cf. https://docs.ruby-lang.org/en/master/maintainers_md.html#label-Platform+Maintainers
How to get Ruby
For a complete list of ways to install Ruby, including using third-party tools like rvm, see:
https://www.ruby-lang.org/en/downloads/
You can download release packages and the snapshot of the repository. If you want to download whole versions of Ruby, please visit https://www.ruby-lang.org/en/downloads/releases/.
Download with Git
The mirror of the Ruby source tree can be checked out with the following command:
$ git clone https://github.com/ruby/ruby.git
There are some other branches under development. Try the following command to see the list of branches:
$ git ls-remote https://github.com/ruby/ruby.git
You may also want to use https://git.ruby-lang.org/ruby.git (actual master of Ruby source) if you are a committer.
How to build
See Building Ruby
Ruby home page
Documentation
Mailing list
There is a mailing list to discuss Ruby. To subscribe to this list, please send the following phrase:
join
in the mail subject (not body) to the address ruby-talk-request@ml.ruby-lang.org.
Copying
See the file COPYING.
Feedback
Questions about the Ruby language can be asked on the Ruby-Talk mailing list or on websites like https://stackoverflow.com.
Bugs should be reported at https://bugs.ruby-lang.org. Read "Reporting Issues" for more information.
Contributing
See "Contributing to Ruby", which includes setup and build instructions.
The Author
Ruby was originally designed and developed by Yukihiro Matsumoto (Matz) in 1995.