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54 lines
2.7 KiB
Text
54 lines
2.7 KiB
Text
% # -*- 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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%
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% # Optimized case of get_instancevariable instruction.
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#if OPT_IC_FOR_IVAR
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{
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% # compiler: Prepare operands which may be used by `insn.call_attribute`
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% insn.opes.each_with_index do |ope, i|
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MAYBE_UNUSED(<%= ope.fetch(:decl) %>) = (<%= ope.fetch(:type) %>)operands[<%= i %>];
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% end
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% # compiler: Use copied IC to avoid race condition
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IC ic_copy = &(status->is_entries + ((union iseq_inline_storage_entry *)ic - body->is_entries))->cache;
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%
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% # compiler: Consider cfp->self as T_OBJECT if ic_copy->ic_serial is set
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if (!status->compile_info->disable_ivar_cache && ic_copy->ic_serial) {
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% # JIT: optimize away motion of sp and pc. This path does not call rb_warning() and so it's always leaf and not `handles_sp`.
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% # <%= render 'mjit_compile_pc_and_sp', locals: { insn: insn } -%>
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%
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% # JIT: prepare vm_getivar's arguments and variables
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fprintf(f, "{\n");
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fprintf(f, " VALUE obj = GET_SELF();\n");
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fprintf(f, " const rb_serial_t ic_serial = (rb_serial_t)%"PRI_SERIALT_PREFIX"u;\n", ic_copy->ic_serial);
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fprintf(f, " const st_index_t index = %"PRIuSIZE";\n", ic_copy->ic_value.index);
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% # JIT: cache hit path of vm_getivar, or cancel JIT.
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% if insn.name == 'setinstancevariable'
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fprintf(f, " VALUE val = stack[%d];\n", b->stack_size - 1);
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fprintf(f, " if (LIKELY(RB_TYPE_P(obj, T_OBJECT) && ic_serial == RCLASS_SERIAL(RBASIC(obj)->klass) && index < ROBJECT_NUMIV(obj))) {\n");
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fprintf(f, " VALUE *ptr = ROBJECT_IVPTR(obj);\n");
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fprintf(f, " RB_OBJ_WRITE(obj, &ptr[index], val);\n");
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fprintf(f, " }\n");
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% else
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fprintf(f, " VALUE val;\n");
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fprintf(f, " if (LIKELY(RB_TYPE_P(obj, T_OBJECT) && ic_serial == RCLASS_SERIAL(RBASIC(obj)->klass) && index < ROBJECT_NUMIV(obj) && (val = ROBJECT_IVPTR(obj)[index]) != Qundef)) {\n");
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fprintf(f, " stack[%d] = val;\n", b->stack_size);
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fprintf(f, " }\n");
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% end
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fprintf(f, " else {\n");
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fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", pos);
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fprintf(f, " reg_cfp->sp = vm_base_ptr(reg_cfp) + %d;\n", b->stack_size);
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fprintf(f, " goto ivar_cancel;\n");
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fprintf(f, " }\n");
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% # compiler: Move JIT compiler's internal stack pointer
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b->stack_size += <%= insn.call_attribute('sp_inc') %>;
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fprintf(f, "}\n");
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break;
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}
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}
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#endif // OPT_IC_FOR_IVAR
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