mem2reg流程基本跑通，修复phi函数打印，需要删除调试print

src/SysYIRPrinter.cpp

@@ -438,14 +438,16 @@ void SysYPrinter::printInst(Instruction *pInst) {
     
     case Kind::kPhi: {
       auto phiInst = dynamic_cast<PhiInst *>(pInst);
-      std::cout << "%" << phiInst->getName() << " = phi ";
+      std::cout << "%";
+      printValue(phiInst->getOperand(0));
+      std::cout << " = phi ";
       printType(phiInst->getType());
       
-      for (unsigned i = 0; i < phiInst->getNumOperands(); i += 2) {
+      for (unsigned i = 1; i < phiInst->getNumOperands(); i++) {
         if (i > 0) std::cout << ", ";
         std::cout << "[ ";
         printValue(phiInst->getOperand(i));
-        std::cout << ", %" << dynamic_cast<BasicBlock*>(phiInst->getOperand(i+1))->getName() << " ]";
+        std::cout << " ]";
       }
       std::cout << std::endl;
     } break;