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path: root/zjit/src/state.rs
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2025-12-10ZJIT: Use inline format args (#15482)Alex Rocha
2025-11-19ZJIT: Count all calls to C functions from generated code (#15240)Max Bernstein
lobsters: ``` Top-20 calls to C functions from JIT code (79.9% of total 97,004,883): rb_vm_opt_send_without_block: 19,874,212 (20.5%) rb_vm_setinstancevariable: 9,774,841 (10.1%) rb_ivar_get: 9,358,866 ( 9.6%) rb_hash_aref: 6,828,948 ( 7.0%) rb_vm_send: 6,441,551 ( 6.6%) rb_vm_env_write: 5,375,989 ( 5.5%) rb_vm_invokesuper: 3,037,836 ( 3.1%) Module#===: 2,562,446 ( 2.6%) rb_ary_entry: 2,354,546 ( 2.4%) Kernel#is_a?: 1,424,092 ( 1.5%) rb_vm_opt_getconstant_path: 1,344,923 ( 1.4%) Thread.current: 1,300,822 ( 1.3%) rb_zjit_defined_ivar: 1,222,613 ( 1.3%) rb_vm_invokeblock: 1,184,555 ( 1.2%) Hash#[]=: 1,061,969 ( 1.1%) rb_ary_push: 1,024,987 ( 1.1%) rb_ary_new_capa: 904,003 ( 0.9%) rb_str_buf_append: 833,782 ( 0.9%) rb_class_allocate_instance: 822,626 ( 0.8%) Hash#fetch: 755,913 ( 0.8%) ``` railsbench: ``` Top-20 calls to C functions from JIT code (74.8% of total 189,170,268): rb_vm_opt_send_without_block: 29,870,307 (15.8%) rb_vm_setinstancevariable: 17,631,199 ( 9.3%) rb_hash_aref: 16,928,890 ( 8.9%) rb_ivar_get: 14,441,240 ( 7.6%) rb_vm_env_write: 11,571,001 ( 6.1%) rb_vm_send: 11,153,457 ( 5.9%) rb_vm_invokesuper: 7,568,267 ( 4.0%) Module#===: 6,065,923 ( 3.2%) Hash#[]=: 2,842,990 ( 1.5%) rb_ary_entry: 2,766,125 ( 1.5%) rb_ary_push: 2,722,079 ( 1.4%) rb_vm_invokeblock: 2,594,398 ( 1.4%) Thread.current: 2,560,129 ( 1.4%) rb_str_getbyte: 1,965,627 ( 1.0%) Kernel#is_a?: 1,961,815 ( 1.0%) rb_vm_opt_getconstant_path: 1,863,678 ( 1.0%) rb_hash_new_with_size: 1,796,456 ( 0.9%) rb_class_allocate_instance: 1,785,043 ( 0.9%) String#empty?: 1,713,414 ( 0.9%) rb_ary_new_capa: 1,678,834 ( 0.9%) ``` shipit: ``` Top-20 calls to C functions from JIT code (83.4% of total 182,402,821): rb_vm_opt_send_without_block: 45,753,484 (25.1%) rb_ivar_get: 21,020,650 (11.5%) rb_vm_setinstancevariable: 17,528,603 ( 9.6%) rb_hash_aref: 11,892,856 ( 6.5%) rb_vm_send: 11,723,471 ( 6.4%) rb_vm_env_write: 10,434,452 ( 5.7%) Module#===: 4,225,048 ( 2.3%) rb_vm_invokesuper: 3,705,906 ( 2.0%) Thread.current: 3,337,603 ( 1.8%) rb_ary_entry: 3,114,378 ( 1.7%) Hash#[]=: 2,509,912 ( 1.4%) Array#empty?: 2,282,994 ( 1.3%) rb_vm_invokeblock: 2,210,511 ( 1.2%) Hash#fetch: 2,017,960 ( 1.1%) _bi20: 1,975,147 ( 1.1%) rb_zjit_defined_ivar: 1,897,127 ( 1.0%) rb_vm_opt_getconstant_path: 1,813,294 ( 1.0%) rb_ary_new_capa: 1,615,406 ( 0.9%) Kernel#is_a?: 1,567,854 ( 0.9%) rb_class_allocate_instance: 1,560,035 ( 0.9%) ``` Thanks to @eregon for the idea. Co-authored-by: Jacob Denbeaux <jacob.denbeaux@shopify.com> Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
2025-11-18ZJIT: add support for lazy `RubyVM::ZJIT.enable`Godfrey Chan
This implements Shopify#854: - Splits boot-time and enable-time initialization, tracks progress with `InitializationState` enum - Introduces `RubyVM::ZJIT.enable` Ruby method for enabling the JIT lazily, if not already enabled - Introduces `--zjit-disable` flag, which can be used alongside the other `--zjit-*` flags but prevents enabling the JIT at boot time - Adds ZJIT infra to support JIT hooks, but this is not currently exercised (Shopify/ruby#667) Left for future enhancements: - Support kwargs for overriding the CLI flags in `RubyVM::ZJIT.enable` Closes Shopify#854
2025-11-04ZJIT: Use a shared trampoline across all ISEQs (#15042)Takashi Kokubun
2025-10-15ZJIT: Add trace exit counter (#14831)Aiden Fox Ivey
2025-10-09ZJIT: Get stats for which C functions are not annotatedMax Bernstein
2025-10-03ZJIT: Add HIR for calling Cfunc with frame (#14661)Stan Lo
* ZJIT: Add HIR for CCallWithFrame * ZJIT: Update stats to count not inlined cfunc calls * ZJIT: Stops optimizing SendWithoutBlock when TracePoint is activated * ZJIT: Fallback to SendWithoutBlock when CCallWithFrame has too many args * ZJIT: Rename cfun -> cfunc
2025-10-02ZJIT: Enable sample rate for side exit tracing (#14696)Aiden Fox Ivey
2025-09-30ZJIT: Decouple stats and side exit tracing (#14688)Aiden Fox Ivey
2025-09-30ZJIT: Add --zjit-trace-exits (#14640)Aiden Fox Ivey
Add side exit tracing functionality for ZJIT
2025-09-30ZJIT: Unify fallback counters for send-ish insns (#14676)Takashi Kokubun
2025-09-29ZJIT: Add stats for cfuncs that are not optimized (#14638)Stan Lo
* ZJIT: Add stats for cfuncs that are not optimized * ZJIT: Add IncrCounterPtr HIR instead From `lobsters` ``` Top-20 Unoptimized C functions (73.0% of total 15,276,688): Kernel#is_a?: 2,052,363 (13.4%) Class#current: 1,892,623 (12.4%) String#to_s: 975,973 ( 6.4%) Hash#key?: 677,623 ( 4.4%) String#empty?: 636,468 ( 4.2%) TrueClass#===: 457,232 ( 3.0%) Hash#[]=: 455,908 ( 3.0%) FalseClass#===: 448,798 ( 2.9%) ActiveSupport::OrderedOptions#_get: 377,468 ( 2.5%) Kernel#kind_of?: 339,551 ( 2.2%) Kernel#dup: 329,371 ( 2.2%) String#==: 324,286 ( 2.1%) String#include?: 297,528 ( 1.9%) Hash#[]: 294,561 ( 1.9%) Array#include?: 287,145 ( 1.9%) Kernel#block_given?: 283,633 ( 1.9%) BasicObject#!=: 278,874 ( 1.8%) Hash#delete: 250,951 ( 1.6%) Set#include?: 246,447 ( 1.6%) NilClass#===: 242,776 ( 1.6%) ``` From `liquid-render` ``` Top-20 Unoptimized C functions (99.8% of total 5,195,549): Hash#key?: 2,459,048 (47.3%) String#to_s: 1,119,758 (21.6%) Set#include?: 799,469 (15.4%) Kernel#is_a?: 214,223 ( 4.1%) Integer#<<: 171,073 ( 3.3%) Integer#/: 127,622 ( 2.5%) CGI::EscapeExt#escapeHTML: 56,971 ( 1.1%) Regexp#===: 50,008 ( 1.0%) String#empty?: 43,990 ( 0.8%) String#===: 36,838 ( 0.7%) String#==: 21,309 ( 0.4%) Time#strftime: 21,251 ( 0.4%) String#strip: 15,271 ( 0.3%) String#scan: 13,753 ( 0.3%) String#+@: 12,603 ( 0.2%) Array#include?: 8,059 ( 0.2%) String#+: 5,295 ( 0.1%) String#dup: 4,606 ( 0.1%) String#-@: 3,213 ( 0.1%) Class#generate: 3,011 ( 0.1%) ```
2025-09-23ZJIT: Allow testing JIT code on zjit-test (#14639)Takashi Kokubun
* ZJIT: Allow testing JIT code on zjit-test * Resurrect TestingAllocator tests
2025-09-12ZJIT: Share more code with YJIT in jit.c (#14520)Takashi Kokubun
* ZJIT: Share more code with YJIT in jit.c * Fix ZJIT references to JIT
2025-09-11ZJIT: Add support for stats_allocatorAiden Fox Ivey
* Using the shared jit crate, support for a single global_allocator can function * Solves --zjit-mem-size
2025-09-03ZJIT: Add missing module doc commentsAiden Fox Ivey
2025-08-27ZJIT: Implement side exit stats (#14357)Takashi Kokubun
2025-08-26ZJIT: Canonicalize --zjit-log-compiled-iseqs filename (#14352)Max Bernstein
This fixes issues related to the process changing directory and not having only a relative path. Thanks, Alan.
2025-08-15ZJIT: Share function stub code using a trampoline (#14225)Takashi Kokubun
2025-08-14ZJIT: Stop duplicating context-less side exits (#14215)Takashi Kokubun
2025-08-11ZJIT: Add --zjit-exec-mem-size (#14175)Takashi Kokubun
* ZJIT: Add --zjit-exec-mem-size * Add a comment about the limit
2025-08-01ZJIT: Improve builtin function annotation collectionStan Lo
2025-08-01ZJIT: Support annotating builtin functionsStan Lo
This allows us to annotate builtin functions with their return type.
2025-07-31ZJIT: Stub JIT-to-JIT calls (#14052)Takashi Kokubun
2025-07-30ZJIT: Prepare for sharing JIT hooks with ZJIT (#14044)Takashi Kokubun
2025-07-29ZJIT: Create delta debugging script to narrow JIT failures (#14041)Max Bernstein
Add support for `--zjit-allowed-iseqs=SomeFile` and `--zjit-log-compiled-iseqs=SomeFile` so we can restrict and inspect which ISEQs get compiled. Then add `jit_bisect.rb` which we can run to try and narrow a failing script. For example: plum% ../tool/zjit_bisect.rb ../build-dev/miniruby "test.rb" I, [2025-07-29T12:41:18.657177 #96899] INFO -- : Starting with JIT list of 4 items. I, [2025-07-29T12:41:18.657229 #96899] INFO -- : Verifying items I, [2025-07-29T12:41:18.726213 #96899] INFO -- : step fixed[0] and items[4] I, [2025-07-29T12:41:18.726246 #96899] INFO -- : 4 candidates I, [2025-07-29T12:41:18.797212 #96899] INFO -- : 2 candidates Reduced JIT list: bar@test.rb:8 plum% We start with 4 compiled functions and shrink to just one.
2025-07-29ZJIT: Add --zjit-stats (#14034)Takashi Kokubun
2025-07-17ZJIT: Remove obsoleted exit_trampoline (#13943)Takashi Kokubun
2025-07-10ZJIT: Implement patch points on BOP redefinition (#13850)Takashi Kokubun
Co-authored-by: Max Bernstein <max@bernsteinbear.com>
2025-06-12ZJIT: Write a callee frame on JIT-to-JIT calls (#13579)Takashi Kokubun
Co-authored-by: Max Bernstein <tekknolagi@gmail.com> Notes: Merged-By: k0kubun <takashikkbn@gmail.com>
2025-06-04ZJIT: Implement side exits for entry frames (#13469)Takashi Kokubun
Co-authored-by: Max Bernstein <tekknolagi@gmail.com> Co-authored-by: Alan Wu <alansi.xingwu@shopify.com> Notes: Merged-By: k0kubun <takashikkbn@gmail.com>
2025-04-18Change mentions of YJIT to ZJIT (https://github.com/Shopify/zjit/pull/113)Aiden Fox Ivey
Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Strength reduce to `CCall` for sends landing in simple C methodsAlan Wu
A new optimization pass. Also: - Printing for `Insn::CCall` - Wrap `ID` and add convenience method for printing, replacing calls to rb_id2name() Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Add miscellaneous Clippy 'corrections' pt. 2 ↵Aiden Fox Ivey
(https://github.com/Shopify/zjit/pull/95) * Remove immediately deferenced borrow operators source: https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow * Remove unnecessary cast as i64 Since Const::CInt64 wraps i64, it is unnecessary to cast to i64. * Remove unnecessary borrow operators * Beautify assign operation syntax * Use .is_null() convenience method * Omit .into() call from u32 to u32 * Use more descriptive std::ptr::null<VALUE>() In lieu of casting a literal as a type, opt to use the convenience type. * Use sized integer literal * Simplify pattern matching to explicit check Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Move lib.rs functions to appropriate modules ↵Takashi Kokubun
(https://github.com/Shopify/zjit/pull/43) Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Assert everything is compiled in test_zjit ↵Takashi Kokubun
(https://github.com/Shopify/zjit/pull/40) * Assert everything is compiled in test_zjit * Update a comment on rb_zjit_assert_compiles Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com> * Add a comment about assert_compiles * Actually use pipe_fd --------- Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com> Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Implement Insn::Param using the SP register ↵Takashi Kokubun
(https://github.com/Shopify/zjit/pull/39) Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Resurrect asm comment supportTakashi Kokubun
Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Let tests share the same ZJITState::init()Takashi Kokubun
to share the initialization of other globals in the future as well Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Initialize dummy globals for testsTakashi Kokubun
Notes: Merged: https://github.com/ruby/ruby/pull/13131
2025-04-18Rename codegen.rs to state.rsTakashi Kokubun
since it's only about ZJITState at the moment. Because it's no longer called "CodegenGlobals", we don't have any reason to keep it in codegen.rs. Notes: Merged: https://github.com/ruby/ruby/pull/13131
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-15 21:27:14 +0000