public static void Main(string[] arg)
{
if (arg.Length > 0)
{
Scanner scanner = new Scanner(arg[0]);
Parser parser = new Parser(scanner);
parser.tab = new SymbolTable(parser);
parser.gen = new CodeGenerator();
parser.program = new List <IRTuple>();
parser.Parse();
if (parser.errors.count == 0)
{
IRTuple.patchFunctions(parser.program);
Console.WriteLine("----IR Tuples----");
parser.program.ForEach(Console.WriteLine);
Console.WriteLine("");
List <BasicBlock> blocks = BasicBlock.CreateBlocks(parser.program);
Console.WriteLine("----Basic Blocks----");
blocks.ForEach(Console.WriteLine);
Console.WriteLine("");
ControlFlowGraph.BuildCFG(blocks);
Console.WriteLine("----Basic Blocks After Control Flow Graph Creation----");
blocks.ForEach(Console.WriteLine);
Console.WriteLine("");
Interference.calculateLiveness(blocks);
// Build interference graph
Console.WriteLine("----Register Allocator Test----");
RegisterAllocator.colour(RegisterAllocator.GraphBuilder());
// Code generation
Environment.Exit(0);
}
else
{
Console.WriteLine("{0} compilation error(s)", parser.errors.count);
Environment.Exit(parser.errors.count);
}
}
else
{
Console.WriteLine("-- No source file specified");
}
Environment.Exit(1);
}
private static BasicBlock FindBlock(List <BasicBlock> blocks, string label, bool first)
{
foreach (var block in blocks)
{
IRTuple stmt = null;
if (first)
{
stmt = block.statements.First();
}
else
{
stmt = block.statements.Last();
}
if (stmt is IRTupleLabel &&
(stmt.op == IROperation.LABEL || stmt.op == IROperation.RET) &&
((IRTupleLabel)stmt).label == label)
{
return(block);
}
}
throw new System.IndexOutOfRangeException($"No {label} block found!");
}