51 lines
1.0 KiB
C++
51 lines
1.0 KiB
C++
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// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#include "IrAnalysis.h"
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#include "IrData.h"
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#include "IrUtils.h"
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#include <stddef.h>
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namespace Luau
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{
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namespace CodeGen
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{
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static void recordUse(IrInst& inst, size_t index)
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{
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LUAU_ASSERT(inst.useCount < 0xffff);
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inst.useCount++;
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inst.lastUse = uint32_t(index);
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}
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void updateUseInfo(IrFunction& function)
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{
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std::vector<IrInst>& instructions = function.instructions;
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for (IrInst& inst : instructions)
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{
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inst.useCount = 0;
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inst.lastUse = 0;
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}
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for (size_t i = 0; i < instructions.size(); ++i)
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{
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IrInst& inst = instructions[i];
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auto checkOp = [&instructions, i](IrOp op) {
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if (op.kind == IrOpKind::Inst)
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recordUse(instructions[op.index], i);
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};
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checkOp(inst.a);
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checkOp(inst.b);
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checkOp(inst.c);
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checkOp(inst.d);
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checkOp(inst.e);
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}
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}
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} // namespace CodeGen
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} // namespace Luau
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