85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
/* This file is part of the dynarmic project.
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* Copyright (c) 2016 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#include "common/assert.h"
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#include "frontend/ir/microinstruction.h"
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namespace Dynarmic {
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namespace IR {
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Value Inst::GetArg(size_t index) const {
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DEBUG_ASSERT(index < GetNumArgsOf(op));
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DEBUG_ASSERT(!args[index].IsEmpty());
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return args[index];
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}
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void Inst::SetArg(size_t index, Value value) {
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DEBUG_ASSERT(index < GetNumArgsOf(op));
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DEBUG_ASSERT(AreTypesCompatible(value.GetType(), GetArgTypeOf(op, index)));
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if (!args[index].IsImmediate()) {
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UndoUse(args[index]);
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}
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if (!value.IsImmediate()) {
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Use(value);
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}
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args[index] = value;
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}
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void Inst::Invalidate() {
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for (auto& value : args) {
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if (!value.IsImmediate()) {
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UndoUse(value);
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}
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}
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}
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void Inst::ReplaceUsesWith(Value& replacement) {
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Invalidate();
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op = Opcode::Identity;
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if (!replacement.IsImmediate()) {
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Use(replacement);
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}
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args[0] = replacement;
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}
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void Inst::Use(Value& value) {
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value.GetInst()->use_count++;
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switch (op){
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case Opcode::GetCarryFromOp:
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value.GetInst()->carry_inst = this;
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break;
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case Opcode::GetOverflowFromOp:
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value.GetInst()->overflow_inst = this;
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break;
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default:
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break;
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}
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}
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void Inst::UndoUse(Value& value) {
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value.GetInst()->use_count--;
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switch (op){
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case Opcode::GetCarryFromOp:
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value.GetInst()->carry_inst = nullptr;
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break;
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case Opcode::GetOverflowFromOp:
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value.GetInst()->overflow_inst = nullptr;
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break;
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default:
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break;
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}
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}
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} // namespace IR
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} // namespace Dynarmic
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