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2021-10-20Fix caseAaron Patterson
2021-10-20Collect statistics about binding allocations / local variable setAaron Patterson
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.
2021-10-20YJIT: hash specialization for opt_arefAlan Wu
Make it lazy and add a hash specialization in addition to the array specialization.
2021-10-20Exit reason breakdown for opt_arefAlan Wu
2021-10-20YJIT: lazy polymorphic getinstancevariableAlan Wu
Lazily compile out a chain of checks for different known classes and whether `self` embeds its ivars or not. * Remove trailing whitespaces * Get proper addresss in Capstone disassembly * Lowercase address in Capstone disassembly Capstone uses lowercase for jump targets in generated listings. Let's match it. * Use the same successor in getivar guard chains Cuts down on duplication * Address reviews * Fix copypasta error * Add a comment
2021-10-20Yet Another Ruby JIT!Jose Narvaez
Renaming uJIT to YJIT. AKA s/ujit/yjit/g.