TORONTO (Reuters) - Canada's main stock index extended its broad-based rally, rising over 1 percent on Tuesday, buoyed by stronger-than-expected U.S. data and earnings, and hopes of progress by the euro zone to tackle Spain and Greece's debts. The Toronto Stock Exchange's S&P/TSX composite index climbed 121.97 points, or 1 percent, to 12,351.93. (Reporting by Solarina Ho; Editing by James Dalgleish)