104 lines
4.6 KiB
Plaintext
104 lines
4.6 KiB
Plaintext
/* -*- C -*- */
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% # Copyright (c) 2018 Takashi Kokubun. All rights reserved.
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% #
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% # This file is a part of the programming language Ruby. Permission is hereby
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% # granted, to either redistribute and/or modify this file, provided that the
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% # conditions mentioned in the file COPYING are met. Consult the file for
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% # details.
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<%= render 'copyright' %>
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%
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% # This is an ERB template that generates Ruby code that generates C code that
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% # generates JIT-ed C code.
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<%= render 'notice', locals: {
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this_file: 'is the main part of compile_insn() in mjit_compile.c',
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edit: __FILE__,
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} -%>
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%
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% unsupported_insns = [
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% 'defineclass', # low priority
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% 'opt_call_c_function', # low priority
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% ]
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%
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% opt_send_without_block = RubyVM::Instructions.find { |i| i.name == 'opt_send_without_block' }
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% if opt_send_without_block.nil?
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% raise 'opt_send_without_block not found'
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% end
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%
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% send_compatible_opt_insns = RubyVM::BareInstructions.to_a.select do |insn|
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% insn.name.start_with?('opt_') && opt_send_without_block.opes == insn.opes &&
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% insn.expr.expr.lines.any? { |l| l.match(/\A\s+CALL_SIMPLE_METHOD\(\);\s+\z/) }
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% end.map(&:name)
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%
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% # Available variables and macros in JIT-ed function:
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% # ec: the first argument of _mjitXXX
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% # reg_cfp: the second argument of _mjitXXX
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% # GET_CFP(): refers to `reg_cfp`
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% # GET_EP(): refers to `reg_cfp->ep`
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% # GET_SP(): refers to `reg_cfp->sp`, or `(stack + stack_size)` if local_stack_p
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% # GET_SELF(): refers to `reg_cfp->self`
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% # GET_LEP(): refers to `VM_EP_LEP(reg_cfp->ep)`
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% # EXEC_EC_CFP(): refers to `val = vm_exec(ec, TRUE)` with frame setup
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% # CALL_METHOD(): using `GET_CFP()` and `EXEC_EC_CFP()`
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% # TOPN(): refers to `reg_cfp->sp`, or `*(stack + (stack_size - num - 1))` if local_stack_p
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% # STACK_ADDR_FROM_TOP(): refers to `reg_cfp->sp`, or `stack + (stack_size - num)` if local_stack_p
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% # DISPATCH_ORIGINAL_INSN(): expanded in _mjit_compile_insn.erb
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% # THROW_EXCEPTION(): specially defined for JIT
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% # RESTORE_REGS(): specially defined for `leave`
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switch (insn) {
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% (RubyVM::BareInstructions.to_a + RubyVM::OperandsUnifications.to_a).each do |insn|
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% next if unsupported_insns.include?(insn.name)
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case BIN(<%= insn.name %>):
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% # Instruction-specific behavior in JIT
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% case insn.name
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% when 'opt_send_without_block', 'send'
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<%= render 'mjit_compile_send', locals: { insn: insn } -%>
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% when *send_compatible_opt_insns
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% # To avoid cancel, just emit `opt_send_without_block` instead of `opt_*` insn if call cache is populated.
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% cd_index = insn.opes.index { |o| o.fetch(:type) == 'CALL_DATA' }
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if (has_valid_method_type(captured_cc_entries(status)[call_data_index((CALL_DATA)operands[<%= cd_index %>], body)])) {
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<%= render 'mjit_compile_send', locals: { insn: opt_send_without_block } -%>
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<%= render 'mjit_compile_insn', locals: { insn: opt_send_without_block } -%>
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break;
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}
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% when 'getinstancevariable', 'setinstancevariable'
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<%= render 'mjit_compile_ivar', locals: { insn: insn } -%>
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% when 'leave'
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if (b->stack_size != 1) {
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if (mjit_opts.warnings || mjit_opts.verbose)
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fprintf(stderr, "MJIT warning: Unexpected JIT stack_size on leave: %d\n", b->stack_size);
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status->success = false;
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}
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% # Skip vm_pop_frame for inlined call
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if (status->inlined_iseqs != NULL) { // the current ISeq is NOT being inlined
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% # Cancel on interrupts to make leave insn leaf
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fprintf(f, " if (UNLIKELY(RUBY_VM_INTERRUPTED_ANY(ec))) {\n");
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if (status->local_stack_p) {
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fprintf(f, " reg_cfp->sp = vm_base_ptr(reg_cfp) + %d;\n", b->stack_size);
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}
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fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", pos);
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fprintf(f, " goto cancel;\n");
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fprintf(f, " }\n");
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fprintf(f, " ec->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(reg_cfp);\n"); // vm_pop_frame
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}
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fprintf(f, " return stack[0];\n");
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b->stack_size += <%= insn.call_attribute('sp_inc') %>;
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b->finish_p = TRUE;
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break;
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% end
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%
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% # Main insn implementation generated by insns.def
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<%= render 'mjit_compile_insn', locals: { insn: insn } -%>
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break;
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% end
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%
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% # We don't support InstructionsUnifications yet because it's not used for now.
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% # We don't support TraceInstructions yet. There is no blocker for it but it's just not implemented.
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default:
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if (mjit_opts.warnings || mjit_opts.verbose)
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fprintf(stderr, "MJIT warning: Skipped to compile unsupported instruction: %s\n", insn_name(insn));
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status->success = false;
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break;
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}
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