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