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168 lines
5 KiB
C#
168 lines
5 KiB
C#
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.Translation;
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace ARMeilleure.Diagnostics
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{
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static class IRDumper
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{
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private const string Indentation = " ";
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public static string GetDump(ControlFlowGraph cfg)
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{
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StringBuilder sb = new StringBuilder();
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Dictionary<Operand, string> localNames = new Dictionary<Operand, string>();
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string indentation = string.Empty;
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void IncreaseIndentation()
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{
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indentation += Indentation;
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}
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void DecreaseIndentation()
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{
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indentation = indentation.Substring(0, indentation.Length - Indentation.Length);
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}
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void AppendLine(string text)
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{
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sb.AppendLine(indentation + text);
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}
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IncreaseIndentation();
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foreach (BasicBlock block in cfg.Blocks)
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{
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string blockName = GetBlockName(block);
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if (block.Next != null)
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{
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blockName += $" (next {GetBlockName(block.Next)})";
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}
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if (block.Branch != null)
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{
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blockName += $" (branch {GetBlockName(block.Branch)})";
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}
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blockName += ":";
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AppendLine(blockName);
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IncreaseIndentation();
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foreach (Node node in block.Operations)
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{
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string[] sources = new string[node.SourcesCount];
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string instName = string.Empty;
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if (node is PhiNode phi)
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{
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for (int index = 0; index < sources.Length; index++)
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{
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string phiBlockName = GetBlockName(phi.GetBlock(index));
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string operName = GetOperandName(phi.GetSource(index), localNames);
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sources[index] = $"({phiBlockName}: {operName})";
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}
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instName = "Phi";
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}
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else if (node is Operation operation)
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{
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for (int index = 0; index < sources.Length; index++)
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{
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sources[index] = GetOperandName(operation.GetSource(index), localNames);
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}
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instName = operation.Instruction.ToString();
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}
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string allSources = string.Join(", ", sources);
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string line = instName + " " + allSources;
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if (node.Destination != null)
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{
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line = GetOperandName(node.Destination, localNames) + " = " + line;
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}
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AppendLine(line);
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}
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DecreaseIndentation();
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}
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return sb.ToString();
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}
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private static string GetBlockName(BasicBlock block)
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{
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return $"block{block.Index}";
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}
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private static string GetOperandName(Operand operand, Dictionary<Operand, string> localNames)
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{
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if (operand == null)
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{
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return "<NULL>";
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}
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string name = string.Empty;
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if (operand.Kind == OperandKind.LocalVariable)
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{
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if (!localNames.TryGetValue(operand, out string localName))
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{
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localName = "%" + localNames.Count;
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localNames.Add(operand, localName);
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}
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name = localName;
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}
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else if (operand.Kind == OperandKind.Register)
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{
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Register reg = operand.GetRegister();
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switch (reg.Type)
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{
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case RegisterType.Flag: name = "b" + reg.Index; break;
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case RegisterType.Integer: name = "r" + reg.Index; break;
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case RegisterType.Vector: name = "v" + reg.Index; break;
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}
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}
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else if (operand.Kind == OperandKind.Constant)
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{
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name = "0x" + operand.Value.ToString("X");
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}
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else
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{
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name = operand.Kind.ToString().ToLower();
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}
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return GetTypeName(operand.Type) + " " + name;
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}
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private static string GetTypeName(OperandType type)
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{
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switch (type)
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{
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case OperandType.FP32: return "f32";
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case OperandType.FP64: return "f64";
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case OperandType.I32: return "i32";
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case OperandType.I64: return "i64";
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case OperandType.None: return "none";
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case OperandType.V128: return "v128";
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}
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throw new ArgumentException($"Invalid operand type \"{type}\".");
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}
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}
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}
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