public override LLVMValueRef Emit(EmittingContext pContext)
{
pContext.EmitDebugLocation(this);
var cond = Condition.Emit(pContext);
Utils.LlvmHelper.LoadIfPointer(ref cond, pContext);
var endBlock = LLVM.AppendBasicBlock(pContext.CurrentMethod, "endswitch");
LLVMBasicBlockRef elseBlock;
pContext.BreakLocations.Push(endBlock);
var builder = LLVM.CreateBuilder();
//Default case has to be the last one
if (Cases[Cases.Count - 1].IsDefault)
{
//Emit else into our else block
var b = pContext.Builder;
pContext.SetBuilder(builder);
elseBlock = Cases[Cases.Count - 1].Emit(pContext);
pContext.SetBuilder(b);
}
else
{
//No else, so this is just an empty block
elseBlock = LLVM.AppendBasicBlock(pContext.CurrentMethod, "else");
}
LLVM.PositionBuilderAtEnd(builder, elseBlock);
var s = LLVM.BuildSwitch(pContext.Builder, cond, elseBlock, (uint)Cases.Count);
for (int i = 0; i < Cases.Count; i++)
{
if (!Cases[i].IsDefault)
{
//Emit case and jump to end
var c = Cases[i].Emit(pContext);
LLVM.BuildBr(pContext.Builder, endBlock);
foreach (var cs in Cases[i].Conditions)
{
LLVM.AddCase(s, cs.Emit(pContext), c);
}
}
}
LLVM.PositionBuilderAtEnd(pContext.Builder, endBlock);
pContext.BreakLocations.Pop();
//Jump from our else block to the end
LLVM.BuildBr(builder, endBlock);
LLVM.DisposeBuilder(builder);
return(default);