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% # -*- mode:c; style:ruby; coding: utf-8; indent-tabs-mode: nil -*-
% # Copyright (c) 2018 Takashi Kokubun. All rights reserved.
% #
% # This file is a part of the programming language Ruby. Permission is hereby
% # granted, to either redistribute and/or modify this file, provided that the
% # conditions mentioned in the file COPYING are met. Consult the file for
% # details.
%
% # Optimized case of get_instancevariable instruction.
#if OPT_IC_FOR_IVAR
{
% # compiler: Prepare operands which may be used by `insn.call_attribute`
% insn.opes.each_with_index do |ope, i|
MAYBE_UNUSED(<%= ope.fetch(:decl) %>) = (<%= ope.fetch(:type) %>)operands[<%= i %>];
% end
%
% # compiler: Consider cfp->self as T_OBJECT if ic->ic_serial is set
if (ic->ic_serial) {
% # 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`.
% # <%= render 'mjit_compile_pc_and_sp', locals: { insn: insn } -%>
%
% # JIT: prepare vm_getivar's arguments and variables
fprintf(f, "{\n");
fprintf(f, " VALUE obj = GET_SELF();\n");
fprintf(f, " const rb_serial_t ic_serial = (rb_serial_t)%"PRI_SERIALT_PREFIX"u;\n", ic->ic_serial);
fprintf(f, " const st_index_t index = %"PRIuSIZE";\n", ic->ic_value.index);
% if insn.name == 'setinstancevariable'
fprintf(f, " VALUE val = stack[%d];\n", b->stack_size - 1);
% end
%
% # JIT: cache hit path of vm_getivar, or cancel JIT.
fprintf(f, " if (LIKELY(RB_TYPE_P(obj, T_OBJECT) && ic_serial == RCLASS_SERIAL(RBASIC(obj)->klass) && index < ROBJECT_NUMIV(obj))) {\n");
% if insn.name == 'setinstancevariable'
fprintf(f, " VALUE *ptr = ROBJECT_IVPTR(obj);\n");
fprintf(f, " RB_OBJ_WRITE(obj, &ptr[index], val);\n");
% else
fprintf(f, " stack[%d] = ROBJECT_IVPTR(obj)[index];\n", b->stack_size);
% end
fprintf(f, " }\n");
fprintf(f, " else {\n");
fprintf(f, " reg_cfp->pc = original_body_iseq + %d;\n", pos);
fprintf(f, " reg_cfp->sp = (VALUE *)reg_cfp->bp + %d;\n", b->stack_size + 1);
fprintf(f, " goto cancel;\n");
fprintf(f, " }\n");
% # compiler: Move JIT compiler's internal stack pointer
b->stack_size += <%= insn.call_attribute('sp_inc') %>;
fprintf(f, "}\n");
break;
}
}
#endif /* OPT_IC_FOR_IVAR */
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