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Merged
pull merged 12 commits into from
Jan 28, 2026
Merged

[pull] master from ruby:master #725

pull merged 12 commits into from
Jan 28, 2026

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nozomemein and others added 12 commits January 27, 2026 14:53
@nozomemein
ZJIT: Compile invokesuperforward (#15958)
6f6ed79 
Closes: Shopify#862

Add dynamic dispatch for `invokesuperforward` instruction as a first step.
Specialization like YJIT’s is not implemented yet and will be handled separately.

## Benchmark 
### lobsters

<details>

<summary>before patch</summary>

```
Average of last 10, non-warmup iters: 654ms
***ZJIT: Printing ZJIT statistics on exit***
Top-20 not inlined C methods (59.5% of total 15,599,811):
                                               Hash#fetch: 3,185,110 (20.4%)
                                            Regexp#match?:   708,802 ( 4.5%)
                                                Hash#key?:   696,422 ( 4.5%)
                                              String#sub!:   489,840 ( 3.1%)
                                             Set#include?:   396,625 ( 2.5%)
                                                String#<<:   396,279 ( 2.5%)
                                       String#start_with?:   379,336 ( 2.4%)
                                              Hash#delete:   325,992 ( 2.1%)
                                               String.new:   307,248 ( 2.0%)
                                              Integer#===:   279,054 ( 1.8%)
                                         Symbol#end_with?:   255,539 ( 1.6%)
                                             Kernel#is_a?:   246,961 ( 1.6%)
                                    Process.clock_gettime:   221,588 ( 1.4%)
                                                Integer#>:   219,718 ( 1.4%)
                                            String#match?:   218,056 ( 1.4%)
                                               Integer#<=:   202,617 ( 1.3%)
                                                Time#to_i:   192,214 ( 1.2%)
                                              Time#subsec:   189,240 ( 1.2%)
                                            String#to_sym:   185,593 ( 1.2%)
                                          String#include?:   182,862 ( 1.2%)
Top-20 calls to C functions from JIT code (83.7% of total 126,406,213):
                             rb_vm_opt_send_without_block: 37,054,888 (29.3%)
                                               rb_vm_send: 10,068,319 ( 8.0%)
                                          rb_vm_env_write:  8,529,584 ( 6.7%)
                                             rb_hash_aref:  8,014,188 ( 6.3%)
                     rb_zjit_writebarrier_check_immediate:  7,697,828 ( 6.1%)
                                rb_vm_getinstancevariable:  5,954,987 ( 4.7%)
                           rb_ivar_get_at_no_ractor_check:  4,759,191 ( 3.8%)
                                        rb_obj_is_kind_of:  3,722,656 ( 2.9%)
                                        rb_vm_invokesuper:  2,663,433 ( 2.1%)
                                             rb_hash_aset:  2,416,121 ( 1.9%)
                                rb_vm_setinstancevariable:  2,355,463 ( 1.9%)
                               rb_vm_opt_getconstant_path:  2,297,784 ( 1.8%)
                                               Hash#fetch:  1,779,524 ( 1.4%)
                                                    fetch:  1,405,586 ( 1.1%)
                                        rb_vm_invokeblock:  1,385,970 ( 1.1%)
                                        rb_str_buf_append:  1,369,178 ( 1.1%)
                                rb_ec_ary_new_from_values:  1,336,805 ( 1.1%)
                               rb_class_allocate_instance:  1,281,590 ( 1.0%)
                                    rb_hash_new_with_size:    899,859 ( 0.7%)
                                        rb_vm_sendforward:    798,572 ( 0.6%)
Top-2 not optimized method types for send (100.0% of total 4,889,764):
  iseq: 4,886,942 (99.9%)
  null:     2,822 ( 0.1%)
Top-3 not optimized method types for send_without_block (100.0% of total 525,349):
        optimized_send: 478,875 (91.2%)
                  null:  42,175 ( 8.0%)
  optimized_block_call:   4,299 ( 0.8%)
Top-3 not optimized method types for super (100.0% of total 2,350,295):
    cfunc: 2,239,567 (95.3%)
    alias:   107,374 ( 4.6%)
  attrset:     3,354 ( 0.1%)
Top-3 instructions with uncategorized fallback reason (100.0% of total 2,216,938):
             invokeblock: 1,385,970 (62.5%)
             sendforward:   798,572 (36.0%)
  opt_send_without_block:    32,396 ( 1.5%)
Top-20 send fallback reasons (99.9% of total 51,971,182):
                          send_without_block_polymorphic: 18,639,354 (35.9%)
                                    singleton_class_seen:  9,274,307 (17.8%)
                          send_without_block_no_profiles:  7,217,551 (13.9%)
                          send_not_optimized_method_type:  4,889,764 ( 9.4%)
                                        send_no_profiles:  2,882,604 ( 5.5%)
                         super_not_optimized_method_type:  2,350,295 ( 4.5%)
                                           uncategorized:  2,216,938 ( 4.3%)
                            one_or_more_complex_arg_pass:  1,543,405 ( 3.0%)
                          send_without_block_megamorphic:    723,037 ( 1.4%)
                                        send_polymorphic:    544,570 ( 1.0%)
  send_without_block_not_optimized_method_type_optimized:    483,174 ( 0.9%)
        send_without_block_not_optimized_need_permission:    390,366 ( 0.8%)
                                   too_many_args_for_lir:    312,568 ( 0.6%)
                                 super_complex_args_pass:    111,053 ( 0.2%)
                          super_target_complex_args_pass:    104,723 ( 0.2%)
                                       super_polymorphic:     87,851 ( 0.2%)
                                     argc_param_mismatch:     50,382 ( 0.1%)
            send_without_block_not_optimized_method_type:     42,175 ( 0.1%)
                                obj_to_string_not_string:     34,861 ( 0.1%)
              send_without_block_direct_keyword_mismatch:     32,436 ( 0.1%)
Top-4 setivar fallback reasons (100.0% of total 2,355,463):
            not_monomorphic: 2,132,748 (90.5%)
               not_t_object:   125,163 ( 5.3%)
                too_complex:    97,531 ( 4.1%)
  new_shape_needs_extension:        21 ( 0.0%)
Top-2 getivar fallback reasons (100.0% of total 6,080,097):
  not_monomorphic: 5,808,527 (95.5%)
      too_complex:   271,570 ( 4.5%)
Top-3 definedivar fallback reasons (100.0% of total 405,302):
  not_monomorphic: 397,150 (98.0%)
      too_complex:   5,122 ( 1.3%)
     not_t_object:   3,030 ( 0.7%)
Top-6 invokeblock handler (100.0% of total 1,385,970):
   monomorphic_iseq: 688,147 (49.7%)
        polymorphic: 523,864 (37.8%)
  monomorphic_other: 106,268 ( 7.7%)
  monomorphic_ifunc:  55,505 ( 4.0%)
        megamorphic:   6,762 ( 0.5%)
        no_profiles:   5,424 ( 0.4%)
Top-8 popular complex argument-parameter features not optimized (100.0% of total 1,850,659):
  param_forwardable: 685,936 (37.1%)
        param_block: 641,355 (34.7%)
         param_rest: 327,046 (17.7%)
       param_kwrest: 120,210 ( 6.5%)
    caller_kw_splat:  36,147 ( 2.0%)
       caller_splat:  34,029 ( 1.8%)
    caller_blockarg:   5,826 ( 0.3%)
       caller_kwarg:     110 ( 0.0%)
Top-1 compile error reasons (100.0% of total 191,769):
  exception_handler: 191,769 (100.0%)
Top-6 unhandled YARV insns (100.0% of total 89,278):
  invokesuperforward: 81,667 (91.5%)
         getconstant:  3,318 ( 3.7%)
       setblockparam:  2,837 ( 3.2%)
          checkmatch:    929 ( 1.0%)
         expandarray:    360 ( 0.4%)
                once:    167 ( 0.2%)
Top-3 unhandled HIR insns (100.0% of total 236,976):
          throw: 198,481 (83.8%)
  invokebuiltin:  35,774 (15.1%)
      array_max:   2,721 ( 1.1%)
Top-20 side exit reasons (100.0% of total 15,409,202):
                   guard_type_failure: 6,871,609 (44.6%)
                  guard_shape_failure: 6,854,409 (44.5%)
  block_param_proxy_not_iseq_or_ifunc: 1,008,346 ( 6.5%)
                   unhandled_hir_insn:   236,976 ( 1.5%)
                        compile_error:   191,769 ( 1.2%)
                  unhandled_yarv_insn:    89,278 ( 0.6%)
                 fixnum_mult_overflow:    50,739 ( 0.3%)
           block_param_proxy_modified:    28,119 ( 0.2%)
     patchpoint_stable_constant_names:    19,872 ( 0.1%)
         unhandled_newarray_send_pack:    14,481 ( 0.1%)
                  unhandled_block_arg:    13,787 ( 0.1%)
               fixnum_lshift_overflow:    10,085 ( 0.1%)
              patchpoint_no_ep_escape:     7,815 ( 0.1%)
                  expandarray_failure:     4,532 ( 0.0%)
             guard_super_method_entry:     4,475 ( 0.0%)
          patchpoint_method_redefined:     1,212 ( 0.0%)
        patchpoint_no_singleton_class:     1,130 ( 0.0%)
               obj_to_string_fallback:       275 ( 0.0%)
                   guard_less_failure:       163 ( 0.0%)
                            interrupt:       111 ( 0.0%)
                             send_count: 152,221,918
                     dynamic_send_count:  51,971,182 (34.1%)
                   optimized_send_count: 100,250,736 (65.9%)
                  dynamic_setivar_count:   2,355,463 ( 1.5%)
                  dynamic_getivar_count:   6,080,097 ( 4.0%)
              dynamic_definedivar_count:     405,302 ( 0.3%)
              iseq_optimized_send_count:  40,162,692 (26.4%)
      inline_cfunc_optimized_send_count:  40,296,415 (26.5%)
       inline_iseq_optimized_send_count:   3,344,046 ( 2.2%)
non_variadic_cfunc_optimized_send_count:   8,915,909 ( 5.9%)
    variadic_cfunc_optimized_send_count:   7,531,674 ( 4.9%)
compiled_iseq_count:                               5,554
failed_iseq_count:                                     0
compile_time:                                    1,779ms
profile_time:                                       13ms
gc_time:                                            19ms
invalidation_time:                                 248ms
vm_write_pc_count:                           133,179,978
vm_write_sp_count:                           133,179,978
vm_write_locals_count:                       129,160,863
vm_write_stack_count:                        129,160,863
vm_write_to_parent_iseq_local_count:             693,262
vm_read_from_parent_iseq_local_count:         14,736,626
guard_type_count:                            157,425,618
guard_type_exit_ratio:                              4.4%
guard_shape_count:                            64,005,824
guard_shape_exit_ratio:                            10.7%
code_region_bytes:                            29,147,136
zjit_alloc_bytes:                             44,468,338
total_mem_bytes:                              73,615,474
side_exit_count:                              15,409,202
total_insn_count:                            934,468,730
vm_insn_count:                               166,726,703
zjit_insn_count:                             767,742,027
ratio_in_zjit:                                     82.2%
```

</details>

<details>

<summary>after patch</summary>

```
Average of last 10, non-warmup iters: 648ms
***ZJIT: Printing ZJIT statistics on exit***
Top-20 not inlined C methods (59.5% of total 15,571,939):
                                               Hash#fetch: 3,185,114 (20.5%)
                                            Regexp#match?:   708,795 ( 4.6%)
                                                Hash#key?:   696,422 ( 4.5%)
                                              String#sub!:   489,841 ( 3.1%)
                                             Set#include?:   396,625 ( 2.5%)
                                                String#<<:   396,279 ( 2.5%)
                                       String#start_with?:   370,465 ( 2.4%)
                                              Hash#delete:   325,992 ( 2.1%)
                                               String.new:   307,248 ( 2.0%)
                                              Integer#===:   277,929 ( 1.8%)
                                         Symbol#end_with?:   255,540 ( 1.6%)
                                             Kernel#is_a?:   246,961 ( 1.6%)
                                    Process.clock_gettime:   221,588 ( 1.4%)
                                                Integer#>:   219,718 ( 1.4%)
                                            String#match?:   218,057 ( 1.4%)
                                               Integer#<=:   202,617 ( 1.3%)
                                                Time#to_i:   192,214 ( 1.2%)
                                              Time#subsec:   189,240 ( 1.2%)
                                            String#to_sym:   185,593 ( 1.2%)
                                          String#include?:   182,863 ( 1.2%)
Top-20 calls to C functions from JIT code (83.7% of total 126,248,940):
                             rb_vm_opt_send_without_block: 36,875,422 (29.2%)
                                               rb_vm_send: 10,068,311 ( 8.0%)
                                          rb_vm_env_write:  8,529,572 ( 6.8%)
                                             rb_hash_aref:  8,014,184 ( 6.3%)
                     rb_zjit_writebarrier_check_immediate:  7,697,776 ( 6.1%)
                                rb_vm_getinstancevariable:  5,934,206 ( 4.7%)
                           rb_ivar_get_at_no_ractor_check:  4,759,185 ( 3.8%)
                                        rb_obj_is_kind_of:  3,745,913 ( 3.0%)
                                        rb_vm_invokesuper:  2,663,429 ( 2.1%)
                                             rb_hash_aset:  2,416,112 ( 1.9%)
                                rb_vm_setinstancevariable:  2,361,107 ( 1.9%)
                               rb_vm_opt_getconstant_path:  2,294,768 ( 1.8%)
                                               Hash#fetch:  1,779,524 ( 1.4%)
                                                    fetch:  1,405,590 ( 1.1%)
                                        rb_vm_invokeblock:  1,385,975 ( 1.1%)
                                        rb_str_buf_append:  1,369,179 ( 1.1%)
                                rb_ec_ary_new_from_values:  1,336,806 ( 1.1%)
                               rb_class_allocate_instance:  1,281,533 ( 1.0%)
                                    rb_hash_new_with_size:    899,857 ( 0.7%)
                                        rb_vm_sendforward:    798,572 ( 0.6%)
Top-2 not optimized method types for send (100.0% of total 4,889,758):
  iseq: 4,886,936 (99.9%)
  null:     2,822 ( 0.1%)
Top-3 not optimized method types for send_without_block (100.0% of total 525,350):
        optimized_send: 478,875 (91.2%)
                  null:  42,176 ( 8.0%)
  optimized_block_call:   4,299 ( 0.8%)
Top-3 not optimized method types for super (100.0% of total 2,350,289):
    cfunc: 2,239,565 (95.3%)
    alias:   107,374 ( 4.6%)
  attrset:     3,350 ( 0.1%)
Top-4 instructions with uncategorized fallback reason (100.0% of total 2,298,609):
             invokeblock: 1,385,975 (60.3%)
             sendforward:   798,572 (34.7%)
      invokesuperforward:    81,666 ( 3.6%)
  opt_send_without_block:    32,396 ( 1.4%)
Top-20 send fallback reasons (99.9% of total 51,873,375):
                          send_without_block_polymorphic: 18,540,291 (35.7%)
                                    singleton_class_seen:  9,210,394 (17.8%)
                          send_without_block_no_profiles:  7,202,051 (13.9%)
                          send_not_optimized_method_type:  4,889,758 ( 9.4%)
                                        send_no_profiles:  2,882,602 ( 5.6%)
                         super_not_optimized_method_type:  2,350,289 ( 4.5%)
                                           uncategorized:  2,298,609 ( 4.4%)
                            one_or_more_complex_arg_pass:  1,543,404 ( 3.0%)
                          send_without_block_megamorphic:    723,037 ( 1.4%)
                                        send_polymorphic:    544,570 ( 1.0%)
  send_without_block_not_optimized_method_type_optimized:    483,174 ( 0.9%)
        send_without_block_not_optimized_need_permission:    389,384 ( 0.8%)
                                   too_many_args_for_lir:    312,568 ( 0.6%)
                                 super_complex_args_pass:    111,054 ( 0.2%)
                          super_target_complex_args_pass:    104,723 ( 0.2%)
                                       super_polymorphic:     87,852 ( 0.2%)
                                     argc_param_mismatch:     50,382 ( 0.1%)
            send_without_block_not_optimized_method_type:     42,176 ( 0.1%)
                                obj_to_string_not_string:     34,853 ( 0.1%)
              send_without_block_direct_keyword_mismatch:     32,436 ( 0.1%)
Top-4 setivar fallback reasons (100.0% of total 2,361,107):
            not_monomorphic: 2,138,392 (90.6%)
               not_t_object:   125,163 ( 5.3%)
                too_complex:    97,531 ( 4.1%)
  new_shape_needs_extension:        21 ( 0.0%)
Top-2 getivar fallback reasons (100.0% of total 6,059,319):
  not_monomorphic: 5,787,746 (95.5%)
      too_complex:   271,573 ( 4.5%)
Top-3 definedivar fallback reasons (100.0% of total 405,302):
  not_monomorphic: 397,150 (98.0%)
      too_complex:   5,122 ( 1.3%)
     not_t_object:   3,030 ( 0.7%)
Top-6 invokeblock handler (100.0% of total 1,385,975):
   monomorphic_iseq: 688,157 (49.7%)
        polymorphic: 523,861 (37.8%)
  monomorphic_other: 106,268 ( 7.7%)
  monomorphic_ifunc:  55,505 ( 4.0%)
        megamorphic:   6,760 ( 0.5%)
        no_profiles:   5,424 ( 0.4%)
Top-8 popular complex argument-parameter features not optimized (100.0% of total 1,850,658):
  param_forwardable: 685,941 (37.1%)
        param_block: 641,355 (34.7%)
         param_rest: 327,046 (17.7%)
       param_kwrest: 120,209 ( 6.5%)
    caller_kw_splat:  36,147 ( 2.0%)
       caller_splat:  34,029 ( 1.8%)
    caller_blockarg:   5,821 ( 0.3%)
       caller_kwarg:     110 ( 0.0%)
Top-1 compile error reasons (100.0% of total 191,769):
  exception_handler: 191,769 (100.0%)
Top-5 unhandled YARV insns (100.0% of total 7,611):
    getconstant: 3,318 (43.6%)
  setblockparam: 2,837 (37.3%)
     checkmatch:   929 (12.2%)
    expandarray:   360 ( 4.7%)
           once:   167 ( 2.2%)
Top-3 unhandled HIR insns (100.0% of total 236,976):
          throw: 198,481 (83.8%)
  invokebuiltin:  35,774 (15.1%)
      array_max:   2,721 ( 1.1%)
Top-20 side exit reasons (100.0% of total 15,343,302):
                   guard_type_failure: 6,886,972 (44.9%)
                  guard_shape_failure: 6,854,835 (44.7%)
  block_param_proxy_not_iseq_or_ifunc: 1,008,346 ( 6.6%)
                   unhandled_hir_insn:   236,976 ( 1.5%)
                        compile_error:   191,769 ( 1.2%)
                 fixnum_mult_overflow:    50,739 ( 0.3%)
           block_param_proxy_modified:    28,119 ( 0.2%)
     patchpoint_stable_constant_names:    19,858 ( 0.1%)
         unhandled_newarray_send_pack:    14,481 ( 0.1%)
                  unhandled_block_arg:    13,787 ( 0.1%)
               fixnum_lshift_overflow:    10,085 ( 0.1%)
              patchpoint_no_ep_escape:     7,815 ( 0.1%)
                  unhandled_yarv_insn:     7,611 ( 0.0%)
                  expandarray_failure:     4,533 ( 0.0%)
             guard_super_method_entry:     4,475 ( 0.0%)
          patchpoint_method_redefined:     1,212 ( 0.0%)
        patchpoint_no_singleton_class:     1,130 ( 0.0%)
               obj_to_string_fallback:       275 ( 0.0%)
                   guard_less_failure:       163 ( 0.0%)
                            interrupt:       102 ( 0.0%)
                             send_count: 152,019,764
                     dynamic_send_count:  51,873,375 (34.1%)
                   optimized_send_count: 100,146,389 (65.9%)
                  dynamic_setivar_count:   2,361,107 ( 1.6%)
                  dynamic_getivar_count:   6,059,319 ( 4.0%)
              dynamic_definedivar_count:     405,302 ( 0.3%)
              iseq_optimized_send_count:  40,149,182 (26.4%)
      inline_cfunc_optimized_send_count:  40,168,875 (26.4%)
       inline_iseq_optimized_send_count:   3,408,619 ( 2.2%)
non_variadic_cfunc_optimized_send_count:   8,896,927 ( 5.9%)
    variadic_cfunc_optimized_send_count:   7,522,786 ( 4.9%)
compiled_iseq_count:                               5,554
failed_iseq_count:                                     0
compile_time:                                    1,784ms
profile_time:                                       13ms
gc_time:                                            19ms
invalidation_time:                                 261ms
vm_write_pc_count:                           133,027,580
vm_write_sp_count:                           133,027,580
vm_write_locals_count:                       129,024,228
vm_write_stack_count:                        129,024,228
vm_write_to_parent_iseq_local_count:             693,264
vm_read_from_parent_iseq_local_count:         14,727,716
guard_type_count:                            157,500,381
guard_type_exit_ratio:                              4.4%
guard_shape_count:                            64,160,894
guard_shape_exit_ratio:                            10.7%
code_region_bytes:                            29,196,288
zjit_alloc_bytes:                             44,686,498
total_mem_bytes:                              73,882,786
side_exit_count:                              15,343,302
total_insn_count:                            934,219,385
vm_insn_count:                               167,485,651
zjit_insn_count:                             766,733,734
ratio_in_zjit:                                     82.1%
```

</details>




### rails-bench

<details>

<summary>before patch</summary>

```
Average of last 10, non-warmup iters: 1146ms
***ZJIT: Printing ZJIT statistics on exit***
Top-20 not inlined C methods (52.4% of total 38,306,776):
                                  Hash#key?: 3,141,619 ( 8.2%)
                              Regexp#match?: 2,420,225 ( 6.3%)
                                 Hash#fetch: 2,245,557 ( 5.9%)
                                Integer#===: 1,098,163 ( 2.9%)
                                Hash#delete: 1,014,375 ( 2.6%)
                                 Array#any?: 1,007,766 ( 2.6%)
                                 String.new: 1,004,713 ( 2.6%)
                                   String#b:   797,913 ( 2.1%)
                              String#to_sym:   680,943 ( 1.8%)
                                 Array#all?:   650,132 ( 1.7%)
                              Fiber.current:   649,003 ( 1.7%)
                                 Array#join:   641,038 ( 1.7%)
                             Array#include?:   613,837 ( 1.6%)
                               Kernel#Array:   610,311 ( 1.6%)
                                  String#<<:   606,240 ( 1.6%)
                           Symbol#end_with?:   598,807 ( 1.6%)
                      String#force_encoding:   593,535 ( 1.5%)
                                 Kernel#dup:   580,051 ( 1.5%)
                                   Array#[]:   562,360 ( 1.5%)
                         Kernel#respond_to?:   550,441 ( 1.4%)
Top-20 calls to C functions from JIT code (75.5% of total 262,197,810):
               rb_vm_opt_send_without_block: 54,534,682 (20.8%)
                               rb_hash_aref: 22,920,285 ( 8.7%)
                            rb_vm_env_write: 19,385,633 ( 7.4%)
                                 rb_vm_send: 17,070,477 ( 6.5%)
       rb_zjit_writebarrier_check_immediate: 13,780,973 ( 5.3%)
                  rb_vm_getinstancevariable: 12,379,513 ( 4.7%)
             rb_ivar_get_at_no_ractor_check: 12,156,906 ( 4.6%)
                          rb_vm_invokesuper:  8,086,665 ( 3.1%)
                               rb_hash_aset:  5,043,536 ( 1.9%)
                          rb_obj_is_kind_of:  4,431,123 ( 1.7%)
                          rb_vm_invokeblock:  4,036,483 ( 1.5%)
                                  Hash#key?:  3,141,619 ( 1.2%)
                 rb_vm_opt_getconstant_path:  3,053,319 ( 1.2%)
                 rb_class_allocate_instance:  2,878,526 ( 1.1%)
                      rb_hash_new_with_size:  2,823,745 ( 1.1%)
                  rb_ec_ary_new_from_values:  2,585,553 ( 1.0%)
                     rb_str_concat_literals:  2,450,764 ( 0.9%)
                              Regexp#match?:  2,420,225 ( 0.9%)
                               rb_obj_alloc:  2,419,171 ( 0.9%)
                  rb_vm_setinstancevariable:  2,357,067 ( 0.9%)
Top-2 not optimized method types for send (100.0% of total 8,550,760):
       iseq: 8,518,289 (99.6%)
  optimized:    32,471 ( 0.4%)
Top-2 not optimized method types for send_without_block (100.0% of total 789,641):
  optimized_send: 606,885 (76.9%)
            null: 182,756 (23.1%)
Top-2 not optimized method types for super (100.0% of total 6,689,859):
    cfunc: 6,640,180 (99.3%)
  attrset:    49,679 ( 0.7%)
Top-3 instructions with uncategorized fallback reason (100.0% of total 5,962,039):
             invokeblock: 4,036,483 (67.7%)
             sendforward: 1,871,601 (31.4%)
  opt_send_without_block:    53,955 ( 0.9%)
Top-20 send fallback reasons (100.0% of total 85,599,908):
                          send_without_block_polymorphic: 31,804,276 (37.2%)
                          send_without_block_no_profiles: 13,349,825 (15.6%)
                          send_not_optimized_method_type:  8,550,760 (10.0%)
                         super_not_optimized_method_type:  6,689,859 ( 7.8%)
                                           uncategorized:  5,962,039 ( 7.0%)
                                        send_no_profiles:  5,200,278 ( 6.1%)
                            one_or_more_complex_arg_pass:  4,198,502 ( 4.9%)
                                        send_polymorphic:  3,318,658 ( 3.9%)
        send_without_block_not_optimized_need_permission:  1,274,177 ( 1.5%)
                                   too_many_args_for_lir:  1,139,487 ( 1.3%)
                                    singleton_class_seen:  1,101,973 ( 1.3%)
                                 super_complex_args_pass:    829,842 ( 1.0%)
  send_without_block_not_optimized_method_type_optimized:    606,885 ( 0.7%)
                          send_without_block_megamorphic:    565,874 ( 0.7%)
                          super_target_complex_args_pass:    414,600 ( 0.5%)
            send_without_block_not_optimized_method_type:    182,756 ( 0.2%)
                                obj_to_string_not_string:    158,141 ( 0.2%)
                                   super_call_with_block:    100,004 ( 0.1%)
              send_without_block_direct_keyword_mismatch:     99,588 ( 0.1%)
                                       super_polymorphic:     52,360 ( 0.1%)
Top-2 setivar fallback reasons (100.0% of total 2,357,067):
  not_monomorphic: 2,255,283 (95.7%)
     not_t_object:   101,784 ( 4.3%)
Top-1 getivar fallback reasons (100.0% of total 12,379,538):
  not_monomorphic: 12,379,538 (100.0%)
Top-2 definedivar fallback reasons (100.0% of total 350,548):
  not_monomorphic: 350,461 (100.0%)
     not_t_object:      87 ( 0.0%)
Top-6 invokeblock handler (100.0% of total 4,036,483):
   monomorphic_iseq: 2,189,057 (54.2%)
        polymorphic: 1,207,002 (29.9%)
  monomorphic_other:   334,248 ( 8.3%)
  monomorphic_ifunc:   221,225 ( 5.5%)
        megamorphic:    84,439 ( 2.1%)
        no_profiles:       512 ( 0.0%)
Top-8 popular complex argument-parameter features not optimized (100.0% of total 5,212,154):
  param_forwardable: 1,824,953 (35.0%)
        param_block: 1,792,214 (34.4%)
         param_rest:   861,894 (16.5%)
       caller_splat:   283,669 ( 5.4%)
    caller_kw_splat:   248,291 ( 4.8%)
       param_kwrest:   200,208 ( 3.8%)
    caller_blockarg:       752 ( 0.0%)
       caller_kwarg:       173 ( 0.0%)
Top-1 compile error reasons (100.0% of total 391,562):
  exception_handler: 391,562 (100.0%)
Top-6 unhandled YARV insns (100.0% of total 1,000,531):
  invokesuperforward: 498,993 (49.9%)
         getconstant: 400,945 (40.1%)
         expandarray:  49,985 ( 5.0%)
       setblockparam:  49,972 ( 5.0%)
          checkmatch:     480 ( 0.0%)
                once:     156 ( 0.0%)
Top-2 unhandled HIR insns (100.0% of total 268,151):
          throw: 232,560 (86.7%)
  invokebuiltin:  35,591 (13.3%)
Top-19 side exit reasons (100.0% of total 8,709,784):
                  guard_shape_failure: 2,497,335 (28.7%)
  block_param_proxy_not_iseq_or_ifunc: 1,988,408 (22.8%)
                   guard_type_failure: 1,722,007 (19.8%)
                  unhandled_yarv_insn: 1,000,531 (11.5%)
                        compile_error:   391,562 ( 4.5%)
         unhandled_newarray_send_pack:   298,017 ( 3.4%)
                   unhandled_hir_insn:   268,151 ( 3.1%)
          patchpoint_method_redefined:   200,632 ( 2.3%)
                  unhandled_block_arg:   151,295 ( 1.7%)
           block_param_proxy_modified:   124,245 ( 1.4%)
                   guard_less_failure:    50,126 ( 0.6%)
               fixnum_lshift_overflow:     9,985 ( 0.1%)
     patchpoint_stable_constant_names:     6,350 ( 0.1%)
                 fixnum_mult_overflow:       570 ( 0.0%)
               obj_to_string_fallback:       405 ( 0.0%)
              patchpoint_no_ep_escape:       109 ( 0.0%)
                            interrupt:        42 ( 0.0%)
             guard_super_method_entry:         8 ( 0.0%)
             guard_greater_eq_failure:         6 ( 0.0%)
                             send_count: 329,199,237
                     dynamic_send_count:  85,599,908 (26.0%)
                   optimized_send_count: 243,599,329 (74.0%)
                  dynamic_setivar_count:   2,357,067 ( 0.7%)
                  dynamic_getivar_count:  12,379,538 ( 3.8%)
              dynamic_definedivar_count:     350,548 ( 0.1%)
              iseq_optimized_send_count:  93,946,576 (28.5%)
      inline_cfunc_optimized_send_count:  97,478,983 (29.6%)
       inline_iseq_optimized_send_count:   9,138,886 ( 2.8%)
non_variadic_cfunc_optimized_send_count:  25,367,116 ( 7.7%)
    variadic_cfunc_optimized_send_count:  17,667,768 ( 5.4%)
compiled_iseq_count:                               2,888
failed_iseq_count:                                     0
compile_time:                                      876ms
profile_time:                                       28ms
gc_time:                                             6ms
invalidation_time:                                   8ms
vm_write_pc_count:                           287,051,837
vm_write_sp_count:                           287,051,837
vm_write_locals_count:                       273,948,883
vm_write_stack_count:                        273,948,883
vm_write_to_parent_iseq_local_count:           1,079,877
vm_read_from_parent_iseq_local_count:         30,814,984
guard_type_count:                            310,888,965
guard_type_exit_ratio:                              0.6%
guard_shape_count:                           108,669,058
guard_shape_exit_ratio:                             2.3%
code_region_bytes:                            14,352,384
zjit_alloc_bytes:                             18,992,674
total_mem_bytes:                              33,345,058
side_exit_count:                               8,709,784
total_insn_count:                          1,705,856,454
vm_insn_count:                               122,246,885
zjit_insn_count:                           1,583,609,569
ratio_in_zjit:                                     92.8%
```

</details>

<details>

<summary>after patch</summary>

```
Average of last 10, non-warmup iters: 1072ms
***ZJIT: Printing ZJIT statistics on exit***
Top-20 not inlined C methods (52.5% of total 38,239,504):
                                  Hash#key?: 3,141,619 ( 8.2%)
                              Regexp#match?: 2,420,215 ( 6.3%)
                                 Hash#fetch: 2,245,557 ( 5.9%)
                                Integer#===: 1,097,515 ( 2.9%)
                                Hash#delete: 1,014,375 ( 2.7%)
                                 Array#any?: 1,007,756 ( 2.6%)
                                 String.new: 1,004,713 ( 2.6%)
                                   String#b:   797,913 ( 2.1%)
                              String#to_sym:   680,943 ( 1.8%)
                                 Array#all?:   650,132 ( 1.7%)
                              Fiber.current:   649,003 ( 1.7%)
                                 Array#join:   641,038 ( 1.7%)
                             Array#include?:   613,837 ( 1.6%)
                               Kernel#Array:   610,311 ( 1.6%)
                                  String#<<:   606,240 ( 1.6%)
                           Symbol#end_with?:   598,807 ( 1.6%)
                      String#force_encoding:   593,535 ( 1.6%)
                                 Kernel#dup:   580,051 ( 1.5%)
                                   Array#[]:   562,360 ( 1.5%)
                         Kernel#respond_to?:   550,441 ( 1.4%)
Top-20 calls to C functions from JIT code (75.4% of total 262,218,592):
               rb_vm_opt_send_without_block: 54,249,429 (20.7%)
                               rb_hash_aref: 22,920,271 ( 8.7%)
                            rb_vm_env_write: 19,385,609 ( 7.4%)
                                 rb_vm_send: 17,070,463 ( 6.5%)
       rb_zjit_writebarrier_check_immediate: 13,780,893 ( 5.3%)
                  rb_vm_getinstancevariable: 12,322,924 ( 4.7%)
             rb_ivar_get_at_no_ractor_check: 12,156,898 ( 4.6%)
                          rb_vm_invokesuper:  8,086,659 ( 3.1%)
                               rb_hash_aset:  5,043,532 ( 1.9%)
                          rb_obj_is_kind_of:  4,474,826 ( 1.7%)
                          rb_vm_invokeblock:  4,036,471 ( 1.5%)
                                  Hash#key?:  3,141,619 ( 1.2%)
                 rb_vm_opt_getconstant_path:  3,053,286 ( 1.2%)
                 rb_class_allocate_instance:  2,878,505 ( 1.1%)
                      rb_hash_new_with_size:  2,823,748 ( 1.1%)
                  rb_ec_ary_new_from_values:  2,585,561 ( 1.0%)
                     rb_str_concat_literals:  2,450,756 ( 0.9%)
                              Regexp#match?:  2,420,215 ( 0.9%)
                               rb_obj_alloc:  2,419,146 ( 0.9%)
                  rb_vm_setinstancevariable:  2,357,065 ( 0.9%)
Top-2 not optimized method types for send (100.0% of total 8,550,755):
       iseq: 8,518,284 (99.6%)
  optimized:    32,471 ( 0.4%)
Top-2 not optimized method types for send_without_block (100.0% of total 789,641):
  optimized_send: 606,885 (76.9%)
            null: 182,756 (23.1%)
Top-2 not optimized method types for super (100.0% of total 6,689,853):
    cfunc: 6,640,178 (99.3%)
  attrset:    49,675 ( 0.7%)
Top-4 instructions with uncategorized fallback reason (100.0% of total 6,461,020):
             invokeblock: 4,036,471 (62.5%)
             sendforward: 1,871,601 (29.0%)
      invokesuperforward:   498,993 ( 7.7%)
  opt_send_without_block:    53,955 ( 0.8%)
Top-20 send fallback reasons (100.0% of total 85,813,616):
                          send_without_block_polymorphic: 31,519,543 (36.7%)
                          send_without_block_no_profiles: 13,349,751 (15.6%)
                          send_not_optimized_method_type:  8,550,755 (10.0%)
                         super_not_optimized_method_type:  6,689,853 ( 7.8%)
                                           uncategorized:  6,461,020 ( 7.5%)
                                        send_no_profiles:  5,200,273 ( 6.1%)
                            one_or_more_complex_arg_pass:  4,198,498 ( 4.9%)
                                        send_polymorphic:  3,318,658 ( 3.9%)
        send_without_block_not_optimized_need_permission:  1,273,739 ( 1.5%)
                                   too_many_args_for_lir:  1,139,487 ( 1.3%)
                                    singleton_class_seen:  1,101,973 ( 1.3%)
                                 super_complex_args_pass:    829,842 ( 1.0%)
  send_without_block_not_optimized_method_type_optimized:    606,885 ( 0.7%)
                          send_without_block_megamorphic:    565,874 ( 0.7%)
                          super_target_complex_args_pass:    414,600 ( 0.5%)
            send_without_block_not_optimized_method_type:    182,756 ( 0.2%)
                                obj_to_string_not_string:    158,133 ( 0.2%)
                                   super_call_with_block:    100,004 ( 0.1%)
              send_without_block_direct_keyword_mismatch:     99,588 ( 0.1%)
                                       super_polymorphic:     52,360 ( 0.1%)
Top-2 setivar fallback reasons (100.0% of total 2,357,065):
  not_monomorphic: 2,255,281 (95.7%)
     not_t_object:   101,784 ( 4.3%)
Top-1 getivar fallback reasons (100.0% of total 12,322,949):
  not_monomorphic: 12,322,949 (100.0%)
Top-2 definedivar fallback reasons (100.0% of total 350,548):
  not_monomorphic: 350,461 (100.0%)
     not_t_object:      87 ( 0.0%)
Top-6 invokeblock handler (100.0% of total 4,036,471):
   monomorphic_iseq: 2,189,045 (54.2%)
        polymorphic: 1,207,002 (29.9%)
  monomorphic_other:   334,248 ( 8.3%)
  monomorphic_ifunc:   221,225 ( 5.5%)
        megamorphic:    84,439 ( 2.1%)
        no_profiles:       512 ( 0.0%)
Top-8 popular complex argument-parameter features not optimized (100.0% of total 5,212,150):
  param_forwardable: 1,824,953 (35.0%)
        param_block: 1,792,214 (34.4%)
         param_rest:   861,894 (16.5%)
       caller_splat:   283,669 ( 5.4%)
    caller_kw_splat:   248,291 ( 4.8%)
       param_kwrest:   200,208 ( 3.8%)
    caller_blockarg:       748 ( 0.0%)
       caller_kwarg:       173 ( 0.0%)
Top-1 compile error reasons (100.0% of total 391,562):
  exception_handler: 391,562 (100.0%)
Top-5 unhandled YARV insns (100.0% of total 501,538):
    getconstant: 400,945 (79.9%)
    expandarray:  49,985 (10.0%)
  setblockparam:  49,972 (10.0%)
     checkmatch:     480 ( 0.1%)
           once:     156 ( 0.0%)
Top-2 unhandled HIR insns (100.0% of total 268,152):
          throw: 232,560 (86.7%)
  invokebuiltin:  35,592 (13.3%)
Top-19 side exit reasons (100.0% of total 8,210,699):
                  guard_shape_failure: 2,497,552 (30.4%)
  block_param_proxy_not_iseq_or_ifunc: 1,988,408 (24.2%)
                   guard_type_failure: 1,721,809 (21.0%)
                  unhandled_yarv_insn:   501,538 ( 6.1%)
                        compile_error:   391,562 ( 4.8%)
         unhandled_newarray_send_pack:   298,017 ( 3.6%)
                   unhandled_hir_insn:   268,152 ( 3.3%)
          patchpoint_method_redefined:   200,632 ( 2.4%)
                  unhandled_block_arg:   151,295 ( 1.8%)
           block_param_proxy_modified:   124,245 ( 1.5%)
                   guard_less_failure:    50,033 ( 0.6%)
               fixnum_lshift_overflow:     9,985 ( 0.1%)
     patchpoint_stable_constant_names:     6,342 ( 0.1%)
                 fixnum_mult_overflow:       570 ( 0.0%)
               obj_to_string_fallback:       405 ( 0.0%)
              patchpoint_no_ep_escape:       109 ( 0.0%)
                            interrupt:        31 ( 0.0%)
             guard_super_method_entry:         8 ( 0.0%)
             guard_greater_eq_failure:         6 ( 0.0%)
                             send_count: 328,805,013
                     dynamic_send_count:  85,813,616 (26.1%)
                   optimized_send_count: 242,991,397 (73.9%)
                  dynamic_setivar_count:   2,357,065 ( 0.7%)
                  dynamic_getivar_count:  12,322,949 ( 3.7%)
              dynamic_definedivar_count:     350,548 ( 0.1%)
              iseq_optimized_send_count:  93,990,621 (28.6%)
      inline_cfunc_optimized_send_count:  96,851,696 (29.5%)
       inline_iseq_optimized_send_count:   9,181,467 ( 2.8%)
non_variadic_cfunc_optimized_send_count:  25,304,458 ( 7.7%)
    variadic_cfunc_optimized_send_count:  17,663,155 ( 5.4%)
compiled_iseq_count:                               2,886
failed_iseq_count:                                     0
compile_time:                                      875ms
profile_time:                                       27ms
gc_time:                                            66ms
invalidation_time:                                   9ms
vm_write_pc_count:                           287,186,308
vm_write_sp_count:                           287,186,308
vm_write_locals_count:                       274,139,228
vm_write_stack_count:                        274,139,228
vm_write_to_parent_iseq_local_count:           1,079,877
vm_read_from_parent_iseq_local_count:         30,810,378
guard_type_count:                            310,644,961
guard_type_exit_ratio:                              0.6%
guard_shape_count:                           109,072,242
guard_shape_exit_ratio:                             2.3%
code_region_bytes:                            14,352,384
zjit_alloc_bytes:                             19,186,174
total_mem_bytes:                              33,538,558
side_exit_count:                               8,210,699
total_insn_count:                          1,705,193,555
vm_insn_count:                               123,691,343
zjit_insn_count:                           1,581,502,212
ratio_in_zjit:                                     92.7%
```

</details>
@rwstauner
ZJIT: Remove unused import to eliminate build warning (#15984)
39b28e6
@kddnewton @matzbot
[ruby/prism] Rename line_to_byte_offset -> byte_offset
c983b7a 
Also, include the column in here. Hopefully we can do some additional
optimizations later.

ruby/prism@7759acdd26
@kddnewton @matzbot
[ruby/prism] Add Prism::Node#find_all
68902e3 
ruby/prism@51df90ef04
@kddnewton @matzbot
[ruby/prism] Bump to v1.9.0
ec15465 
ruby/prism@e722e577ef
@kddnewton
Use slices instead of locations
af4a1ca 
In the C API, we want to use slices instead of locations in the
AST. In this case a "slice" is effectively the same thing as the
location, expect it is represented using a 32-bit offset and a
32-bit length. This will cut down on half of the space of all of
the locations in the AST.

Note that from the Ruby/Java/JavaScript side, this is effectively
an invisible change. This only impacts the C/Rust side.
@matzbot
Update default gems list at ec15465 [ci skip]
6687167
@kddnewton @matzbot
[ruby/prism] Mark STATES as a private constant
1cd3253 
ruby/prism@c78f742581
@eregon @matzbot
[ruby/prism] Use the terminology "column in bytes/characters/code units"
5c15f93 
* Consistent and clear.
* Avoids the confusion that "column number" might be understood
  as a column in an editor starting at 1 (they all start at 0).

ruby/prism@91f1c4b9d5
@kddnewton @matzbot
[ruby/prism] Mark insert_on_sp as private
d561609 
ruby/prism@db72066cde
@peterzhu2118
[DOC] Fix hash style in Hash#flatten
5eb17ea
@mackuba
[DOC] fixed pid shown in the doc comment on fork
bea48ad
@pull pull bot locked and limited conversation to collaborators Jan 28, 2026
@pull pull bot added the ⤵️ pull label Jan 28, 2026
@pull pull bot merged commit bea48ad into turkdevops:master Jan 28, 2026
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7 participants

@nozomemein @rwstauner @kddnewton @matzbot @eregon @peterzhu2118 @mackuba