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52 lines
1.5 KiB
C#
52 lines
1.5 KiB
C#
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using ARMeilleure.IntermediateRepresentation;
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using System.Collections.Generic;
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using static ARMeilleure.IntermediateRepresentation.OperandHelper;
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namespace ARMeilleure.Translation
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{
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static class RegisterToLocal
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{
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public static void Rename(ControlFlowGraph cfg)
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{
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Dictionary<Register, Operand> registerToLocalMap = new Dictionary<Register, Operand>();
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Operand GetLocal(Operand op)
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{
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Register register = op.GetRegister();
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if (!registerToLocalMap.TryGetValue(register, out Operand local))
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{
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local = Local(op.Type);
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registerToLocalMap.Add(register, local);
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}
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return local;
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}
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foreach (BasicBlock block in cfg.Blocks)
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{
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foreach (Node node in block.Operations)
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{
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Operand dest = node.Destination;
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if (dest != null && dest.Kind == OperandKind.Register)
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{
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node.Destination = GetLocal(dest);
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}
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for (int index = 0; index < node.SourcesCount; index++)
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{
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Operand source = node.GetSource(index);
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if (source.Kind == OperandKind.Register)
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{
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node.SetSource(index, GetLocal(source));
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}
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}
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}
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}
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}
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}
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}
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