private ForStatementUpNode Visit(ForStatementUpNode node)
{
Visit(node.expr1);
builder.BuildStore(GetProperty(node.expr1).addr, LookupSymbolOrAlloc(node.Identifier));
var condBB = func.AppendBasicBlock($"cond_{++count}");
var bodyBB = func.AppendBasicBlock($"body_{++count}");
var contBB = func.AppendBasicBlock($"cont_{++count}");
builder.BuildBr(condBB);
builder.PositionAtEnd(condBB);
Visit(node.expr2);
var t = builder.BuildLoad(LookupSymbolOrAlloc(node.Identifier));
var b = builder.BuildICmp(LLVMIntPredicate.LLVMIntSLT, t, GetProperty(node.expr2).addr);
builder.BuildCondBr(b, bodyBB, contBB);
builder.PositionAtEnd(bodyBB);
Visit(node.StatementNode);
t = builder.BuildLoad(LookupSymbolOrAlloc(node.Identifier));
var r = builder.BuildAdd(t, LLVMValueRef.CreateConstInt(LLVMTypeRef.Int32, 1));
builder.BuildStore(r, LookupSymbolOrAlloc(node.Identifier));
builder.BuildBr(condBB);
builder.PositionAtEnd(contBB);
return(node);
}
