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ruby--ruby/yjit.h

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#ifndef YJIT_H
#define YJIT_H 1
//
// This file contains definitions YJIT exposes to the CRuby codebase
//
#include "ruby/internal/config.h"
#include "ruby_assert.h" // for RUBY_DEBUG
#include "vm_core.h"
#include "method.h"
// YJIT_STATS controls whether to support runtime counters in generated code
// and in the interpreter.
#ifndef YJIT_STATS
# define YJIT_STATS RUBY_DEBUG
#endif
// We generate x86 assembly
#if (defined(__x86_64__) && !defined(_WIN32)) || (defined(_WIN32) && defined(_M_AMD64)) // x64 platforms without mingw/msys
# define YJIT_SUPPORTED_P 1
#else
# define YJIT_SUPPORTED_P 0
#endif
Rust YJIT In December 2021, we opened an [issue] to solicit feedback regarding the porting of the YJIT codebase from C99 to Rust. There were some reservations, but this project was given the go ahead by Ruby core developers and Matz. Since then, we have successfully completed the port of YJIT to Rust. The new Rust version of YJIT has reached parity with the C version, in that it passes all the CRuby tests, is able to run all of the YJIT benchmarks, and performs similarly to the C version (because it works the same way and largely generates the same machine code). We've even incorporated some design improvements, such as a more fine-grained constant invalidation mechanism which we expect will make a big difference in Ruby on Rails applications. Because we want to be careful, YJIT is guarded behind a configure option: ```shell ./configure --enable-yjit # Build YJIT in release mode ./configure --enable-yjit=dev # Build YJIT in dev/debug mode ``` By default, YJIT does not get compiled and cargo/rustc is not required. If YJIT is built in dev mode, then `cargo` is used to fetch development dependencies, but when building in release, `cargo` is not required, only `rustc`. At the moment YJIT requires Rust 1.60.0 or newer. The YJIT command-line options remain mostly unchanged, and more details about the build process are documented in `doc/yjit/yjit.md`. The CI tests have been updated and do not take any more resources than before. The development history of the Rust port is available at the following commit for interested parties: https://github.com/Shopify/ruby/commit/1fd9573d8b4b65219f1c2407f30a0a60e537f8be Our hope is that Rust YJIT will be compiled and included as a part of system packages and compiled binaries of the Ruby 3.2 release. We do not anticipate any major problems as Rust is well supported on every platform which YJIT supports, but to make sure that this process works smoothly, we would like to reach out to those who take care of building systems packages before the 3.2 release is shipped and resolve any issues that may come up. [issue]: https://bugs.ruby-lang.org/issues/18481 Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com> Co-authored-by: Noah Gibbs <the.codefolio.guy@gmail.com> Co-authored-by: Kevin Newton <kddnewton@gmail.com>
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// Is the output binary going to include YJIT?
#if USE_MJIT && USE_YJIT && YJIT_SUPPORTED_P
# define YJIT_BUILD 1
#else
# define YJIT_BUILD 0
#endif
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#undef YJIT_SUPPORTED_P
Rust YJIT In December 2021, we opened an [issue] to solicit feedback regarding the porting of the YJIT codebase from C99 to Rust. There were some reservations, but this project was given the go ahead by Ruby core developers and Matz. Since then, we have successfully completed the port of YJIT to Rust. The new Rust version of YJIT has reached parity with the C version, in that it passes all the CRuby tests, is able to run all of the YJIT benchmarks, and performs similarly to the C version (because it works the same way and largely generates the same machine code). We've even incorporated some design improvements, such as a more fine-grained constant invalidation mechanism which we expect will make a big difference in Ruby on Rails applications. Because we want to be careful, YJIT is guarded behind a configure option: ```shell ./configure --enable-yjit # Build YJIT in release mode ./configure --enable-yjit=dev # Build YJIT in dev/debug mode ``` By default, YJIT does not get compiled and cargo/rustc is not required. If YJIT is built in dev mode, then `cargo` is used to fetch development dependencies, but when building in release, `cargo` is not required, only `rustc`. At the moment YJIT requires Rust 1.60.0 or newer. The YJIT command-line options remain mostly unchanged, and more details about the build process are documented in `doc/yjit/yjit.md`. The CI tests have been updated and do not take any more resources than before. The development history of the Rust port is available at the following commit for interested parties: https://github.com/Shopify/ruby/commit/1fd9573d8b4b65219f1c2407f30a0a60e537f8be Our hope is that Rust YJIT will be compiled and included as a part of system packages and compiled binaries of the Ruby 3.2 release. We do not anticipate any major problems as Rust is well supported on every platform which YJIT supports, but to make sure that this process works smoothly, we would like to reach out to those who take care of building systems packages before the 3.2 release is shipped and resolve any issues that may come up. [issue]: https://bugs.ruby-lang.org/issues/18481 Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com> Co-authored-by: Noah Gibbs <the.codefolio.guy@gmail.com> Co-authored-by: Kevin Newton <kddnewton@gmail.com>
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#if YJIT_BUILD
Rust YJIT In December 2021, we opened an [issue] to solicit feedback regarding the porting of the YJIT codebase from C99 to Rust. There were some reservations, but this project was given the go ahead by Ruby core developers and Matz. Since then, we have successfully completed the port of YJIT to Rust. The new Rust version of YJIT has reached parity with the C version, in that it passes all the CRuby tests, is able to run all of the YJIT benchmarks, and performs similarly to the C version (because it works the same way and largely generates the same machine code). We've even incorporated some design improvements, such as a more fine-grained constant invalidation mechanism which we expect will make a big difference in Ruby on Rails applications. Because we want to be careful, YJIT is guarded behind a configure option: ```shell ./configure --enable-yjit # Build YJIT in release mode ./configure --enable-yjit=dev # Build YJIT in dev/debug mode ``` By default, YJIT does not get compiled and cargo/rustc is not required. If YJIT is built in dev mode, then `cargo` is used to fetch development dependencies, but when building in release, `cargo` is not required, only `rustc`. At the moment YJIT requires Rust 1.60.0 or newer. The YJIT command-line options remain mostly unchanged, and more details about the build process are documented in `doc/yjit/yjit.md`. The CI tests have been updated and do not take any more resources than before. The development history of the Rust port is available at the following commit for interested parties: https://github.com/Shopify/ruby/commit/1fd9573d8b4b65219f1c2407f30a0a60e537f8be Our hope is that Rust YJIT will be compiled and included as a part of system packages and compiled binaries of the Ruby 3.2 release. We do not anticipate any major problems as Rust is well supported on every platform which YJIT supports, but to make sure that this process works smoothly, we would like to reach out to those who take care of building systems packages before the 3.2 release is shipped and resolve any issues that may come up. [issue]: https://bugs.ruby-lang.org/issues/18481 Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com> Co-authored-by: Noah Gibbs <the.codefolio.guy@gmail.com> Co-authored-by: Kevin Newton <kddnewton@gmail.com>
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// Expose these as declarations since we are building YJIT.
bool rb_yjit_enabled_p(void);
unsigned rb_yjit_call_threshold(void);
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void rb_yjit_invalidate_all_method_lookup_assumptions(void);
void rb_yjit_method_lookup_change(VALUE klass, ID mid);
Rust YJIT In December 2021, we opened an [issue] to solicit feedback regarding the porting of the YJIT codebase from C99 to Rust. There were some reservations, but this project was given the go ahead by Ruby core developers and Matz. Since then, we have successfully completed the port of YJIT to Rust. The new Rust version of YJIT has reached parity with the C version, in that it passes all the CRuby tests, is able to run all of the YJIT benchmarks, and performs similarly to the C version (because it works the same way and largely generates the same machine code). We've even incorporated some design improvements, such as a more fine-grained constant invalidation mechanism which we expect will make a big difference in Ruby on Rails applications. Because we want to be careful, YJIT is guarded behind a configure option: ```shell ./configure --enable-yjit # Build YJIT in release mode ./configure --enable-yjit=dev # Build YJIT in dev/debug mode ``` By default, YJIT does not get compiled and cargo/rustc is not required. If YJIT is built in dev mode, then `cargo` is used to fetch development dependencies, but when building in release, `cargo` is not required, only `rustc`. At the moment YJIT requires Rust 1.60.0 or newer. The YJIT command-line options remain mostly unchanged, and more details about the build process are documented in `doc/yjit/yjit.md`. The CI tests have been updated and do not take any more resources than before. The development history of the Rust port is available at the following commit for interested parties: https://github.com/Shopify/ruby/commit/1fd9573d8b4b65219f1c2407f30a0a60e537f8be Our hope is that Rust YJIT will be compiled and included as a part of system packages and compiled binaries of the Ruby 3.2 release. We do not anticipate any major problems as Rust is well supported on every platform which YJIT supports, but to make sure that this process works smoothly, we would like to reach out to those who take care of building systems packages before the 3.2 release is shipped and resolve any issues that may come up. [issue]: https://bugs.ruby-lang.org/issues/18481 Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com> Co-authored-by: Noah Gibbs <the.codefolio.guy@gmail.com> Co-authored-by: Kevin Newton <kddnewton@gmail.com>
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void rb_yjit_cme_invalidate(rb_callable_method_entry_t *cme);
void rb_yjit_collect_vm_usage_insn(int insn);
Collect statistics about binding allocations / local variable set This commit collects statistics about how many binding objects are allocated as well as the number of local variables set on bindings. Statistics are output along with other YJIT stats. Here is an example of the output: ``` ***YJIT: Printing runtime counters from yjit.rb*** Number of Bindings Allocated: 195 Number of locals modified through binding: 0 opt_send_without_block exit reasons: ivar_get_method 7515891 (40.4%) se_cc_klass_differ 3081330 (16.6%) iseq_argc_mismatch 1564578 ( 8.4%) se_receiver_not_heap 1557663 ( 8.4%) ic_empty 1407064 ( 7.6%) optimized_method 995823 ( 5.4%) iseq_not_simple 819413 ( 4.4%) alias_method 706972 ( 3.8%) bmethod 685253 ( 3.7%) callsite_not_simple 225983 ( 1.2%) kw_splat 25999 ( 0.1%) ivar_set_method 902 ( 0.0%) cfunc_toomany_args 394 ( 0.0%) refined_method 42 ( 0.0%) cfunc_ruby_array_varg 29 ( 0.0%) invalid_cme 4 ( 0.0%) leave exit reasons: se_finish_frame 4067107 (100.0%) se_interrupt 24 ( 0.0%) getinstancevariable exit reasons: undef 121177 (100.0%) idx_out_of_range 5 ( 0.0%) opt_aref exit reasons: (all relevant counters are zero) compiled_iseq_count: 3944 main_block_code_size: 1.1 MiB side_block_code_size: 0.6 MiB vm_insns_count: 1137268516 yjit_exec_insns_count: 414015644 ratio_in_yjit: 26.7% avg_len_in_yjit: 7.5 total_exit_count: 55491789 most frequent exit op: opt_send_without_block: 18587628 (33.5%) opt_getinlinecache: 11075822 (20.0%) send: 4949300 (8.9%) leave: 4067131 (7.3%) defined: 3975196 (7.2%) setinstancevariable: 3567315 (6.4%) invokesuper: 2982163 (5.4%) getblockparamproxy: 2168852 (3.9%) opt_nil_p: 2104524 (3.8%) opt_aref: 2013858 (3.6%) ``` Running RailsBench allocates 195 binding objects but doesn't set any local variables.
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void rb_yjit_collect_binding_alloc(void);
void rb_yjit_collect_binding_set(void);
bool rb_yjit_compile_iseq(const rb_iseq_t *iseq, rb_execution_context_t *ec);
Rust YJIT In December 2021, we opened an [issue] to solicit feedback regarding the porting of the YJIT codebase from C99 to Rust. There were some reservations, but this project was given the go ahead by Ruby core developers and Matz. Since then, we have successfully completed the port of YJIT to Rust. The new Rust version of YJIT has reached parity with the C version, in that it passes all the CRuby tests, is able to run all of the YJIT benchmarks, and performs similarly to the C version (because it works the same way and largely generates the same machine code). We've even incorporated some design improvements, such as a more fine-grained constant invalidation mechanism which we expect will make a big difference in Ruby on Rails applications. Because we want to be careful, YJIT is guarded behind a configure option: ```shell ./configure --enable-yjit # Build YJIT in release mode ./configure --enable-yjit=dev # Build YJIT in dev/debug mode ``` By default, YJIT does not get compiled and cargo/rustc is not required. If YJIT is built in dev mode, then `cargo` is used to fetch development dependencies, but when building in release, `cargo` is not required, only `rustc`. At the moment YJIT requires Rust 1.60.0 or newer. The YJIT command-line options remain mostly unchanged, and more details about the build process are documented in `doc/yjit/yjit.md`. The CI tests have been updated and do not take any more resources than before. The development history of the Rust port is available at the following commit for interested parties: https://github.com/Shopify/ruby/commit/1fd9573d8b4b65219f1c2407f30a0a60e537f8be Our hope is that Rust YJIT will be compiled and included as a part of system packages and compiled binaries of the Ruby 3.2 release. We do not anticipate any major problems as Rust is well supported on every platform which YJIT supports, but to make sure that this process works smoothly, we would like to reach out to those who take care of building systems packages before the 3.2 release is shipped and resolve any issues that may come up. [issue]: https://bugs.ruby-lang.org/issues/18481 Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com> Co-authored-by: Noah Gibbs <the.codefolio.guy@gmail.com> Co-authored-by: Kevin Newton <kddnewton@gmail.com>
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void rb_yjit_init(void);
void rb_yjit_bop_redefined(int redefined_flag, enum ruby_basic_operators bop);
void rb_yjit_constant_state_changed(ID id);
void rb_yjit_iseq_mark(void *payload);
void rb_yjit_iseq_update_references(void *payload);
void rb_yjit_iseq_free(void *payload);
void rb_yjit_before_ractor_spawn(void);
void rb_yjit_constant_ic_update(const rb_iseq_t *const iseq, IC ic);
void rb_yjit_tracing_invalidate_all(void);
Rust YJIT In December 2021, we opened an [issue] to solicit feedback regarding the porting of the YJIT codebase from C99 to Rust. There were some reservations, but this project was given the go ahead by Ruby core developers and Matz. Since then, we have successfully completed the port of YJIT to Rust. The new Rust version of YJIT has reached parity with the C version, in that it passes all the CRuby tests, is able to run all of the YJIT benchmarks, and performs similarly to the C version (because it works the same way and largely generates the same machine code). We've even incorporated some design improvements, such as a more fine-grained constant invalidation mechanism which we expect will make a big difference in Ruby on Rails applications. Because we want to be careful, YJIT is guarded behind a configure option: ```shell ./configure --enable-yjit # Build YJIT in release mode ./configure --enable-yjit=dev # Build YJIT in dev/debug mode ``` By default, YJIT does not get compiled and cargo/rustc is not required. If YJIT is built in dev mode, then `cargo` is used to fetch development dependencies, but when building in release, `cargo` is not required, only `rustc`. At the moment YJIT requires Rust 1.60.0 or newer. The YJIT command-line options remain mostly unchanged, and more details about the build process are documented in `doc/yjit/yjit.md`. The CI tests have been updated and do not take any more resources than before. The development history of the Rust port is available at the following commit for interested parties: https://github.com/Shopify/ruby/commit/1fd9573d8b4b65219f1c2407f30a0a60e537f8be Our hope is that Rust YJIT will be compiled and included as a part of system packages and compiled binaries of the Ruby 3.2 release. We do not anticipate any major problems as Rust is well supported on every platform which YJIT supports, but to make sure that this process works smoothly, we would like to reach out to those who take care of building systems packages before the 3.2 release is shipped and resolve any issues that may come up. [issue]: https://bugs.ruby-lang.org/issues/18481 Co-authored-by: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com> Co-authored-by: Noah Gibbs <the.codefolio.guy@gmail.com> Co-authored-by: Kevin Newton <kddnewton@gmail.com>
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#else
// !YJIT_BUILD
// In these builds, YJIT could never be turned on. Provide dummy implementations.
static inline bool rb_yjit_enabled_p(void) { return false; }
static inline unsigned rb_yjit_call_threshold(void) { return UINT_MAX; }
static inline void rb_yjit_invalidate_all_method_lookup_assumptions(void) {}
static inline void rb_yjit_method_lookup_change(VALUE klass, ID mid) {}
static inline void rb_yjit_cme_invalidate(rb_callable_method_entry_t *cme) {}
static inline void rb_yjit_collect_vm_usage_insn(int insn) {}
static inline void rb_yjit_collect_binding_alloc(void) {}
static inline void rb_yjit_collect_binding_set(void) {}
static inline bool rb_yjit_compile_iseq(const rb_iseq_t *iseq, rb_execution_context_t *ec) { return false; }
static inline void rb_yjit_init(void) {}
static inline void rb_yjit_bop_redefined(int redefined_flag, enum ruby_basic_operators bop) {}
static inline void rb_yjit_constant_state_changed(ID id) {}
static inline void rb_yjit_iseq_mark(void *payload) {}
static inline void rb_yjit_iseq_update_references(void *payload) {}
static inline void rb_yjit_iseq_free(void *payload) {}
static inline void rb_yjit_before_ractor_spawn(void) {}
static inline void rb_yjit_constant_ic_update(const rb_iseq_t *const iseq, IC ic) {}
static inline void rb_yjit_tracing_invalidate_all(void) {}
#endif // #if YJIT_BUILD
#endif // #ifndef YJIT_H