diff --git a/include/visitor.h b/include/visitor.h
index fc56aea..39716c9 100644
--- a/include/visitor.h
+++ b/include/visitor.h
@@ -41,7 +41,7 @@ std::shared_ptr<InstStore> build_InstStore(
   std::shared_ptr<BasicBlock> parent_bb
 );
 
-std::shared_ptr<InstAlloca> build_InstAlloca(TypePtr_t type, std::shared_ptr<BasicBlock> parent_bb);
+std::shared_ptr<InstAlloca> build_InstAlloca(const std::string &str, TypePtr_t type, std::shared_ptr<BasicBlock> parent_bb);
 
 std::shared_ptr<InstBinary> build_InstBinary(
   InstTag inst_tag,
diff --git a/scripts/manual-compile.py b/scripts/manual-compile.py
index 951b43a..8c9ff32 100644
--- a/scripts/manual-compile.py
+++ b/scripts/manual-compile.py
@@ -1,17 +1,19 @@
 import sys
 import os
 
-assert len(sys.argv) > 2
-print("compile {}".format(sys.argv[1]))
-fullpath = sys.argv[1]
-libpath = sys.argv[2]
-(filename, extname) = os.path.splitext(sys.argv[1])
+assert len(sys.argv) > 3
+print("compile {}".format(sys.argv[2]))
+selector = sys.argv[1]
+fullpath = sys.argv[2]
+libpath = sys.argv[3]
+(filename, extname) = os.path.splitext(fullpath)
 '''
-python3 scripts/manual-compile.py build/manual-test/55_sort_test1.sy tools/sylib/libsysy_x86.a
+python3 my|clang scripts/manual-compile.py build/manual-test/55_sort_test1.sy tools/sylib/libsysy_x86.a
 '''
 # os.system(f"clang -emit-llvm -S {fullpath} -o {filename}.ll -O0 -fno-builtin")
-print(f"clang -x c -c -m32 -emit-llvm -S {fullpath} -o {filename}.ll -O0 -fno-builtin")
-os.system(f"clang -x c -c -m32 -emit-llvm -S {fullpath} -o {filename}.ll -O0 -fno-builtin")
+if selector != "my":
+  print(f"clang -x c -c -m32 -emit-llvm -S {fullpath} -o {filename}.ll -O0 -fno-builtin")
+  os.system(f"clang -x c -c -m32 -emit-llvm -S {fullpath} -o {filename}.ll -O0 -fno-builtin")
 print(f"llc --march=x86 --relocation-model=pic {filename}.ll -o {filename}.s")
 os.system(f"llc --march=x86 --relocation-model=pic {filename}.ll -o {filename}.s")
 print(f"as --32 {filename}.s -o {filename}.o")
diff --git a/scripts/simple-diff.sh b/scripts/simple-diff.sh
new file mode 100755
index 0000000..90e08a7
--- /dev/null
+++ b/scripts/simple-diff.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+basedir="build/output"
+for kase in `ls $basedir`
+do
+echo "$basedir/$kase"
+diff $basedir/$kase/my.out $basedir/$kase/llir.out
+done
\ No newline at end of file
diff --git a/scripts/tester.py b/scripts/tester.py
index 407a800..9a064ae 100644
--- a/scripts/tester.py
+++ b/scripts/tester.py
@@ -116,16 +116,19 @@ if __name__ == '__main__':
     testcases = get_sy_testcases(sub_dir=category)
     all_schemes = [clang_llvm_scheme, thu_llvm_scheme, thu_thu_scheme] # gcc_gcc_scheme, ustc_ustc_scheme, ustc_ustc_no_vec_scheme]
     testers = []
-    Print_C.print_header("[Removing old data...]\n\n")
-    subprocess.run("rm -rf build/test_results/".split())
-    subprocess.run("rm -rf build/output/".split())
-    subprocess.run("rm -rf build/log/compile_log".split())
-    subprocess.run("rm -rf build/log/run_log".split())
-    subprocess.run("rm -rf build/log/test_result.log".split())
-
-    Tester(my_scheme, True, testcases).compile_rubbish(category=category)
-    # Tester(llir_scheme, True, testcases).compile_reference(category=category)
+    # Print_C.print_header("[Removing old data...]\n\n")
+    # subprocess.run("rm -rf build/test_results/".split())
+    # subprocess.run("rm -rf build/output/".split())
+    # subprocess.run("rm -rf build/log/compile_log".split())
+    # subprocess.run("rm -rf build/log/run_log".split())
+    # subprocess.run("rm -rf build/log/test_result.log".split())
 
+    # mytester = Tester(my_scheme, True, testcases)
+    # mytester.compile_rubbish(category=category)
+    # mytester.run()
+    clangtester = Tester(llir_scheme, True, testcases)
+    clangtester.compile_reference(category=category)
+    clangtester.run()
     # for scheme in all_schemes:
     #     tester = Tester(scheme, is_trivial=True)
     #     testers.append(tester)
diff --git a/src/visitor.cpp b/src/visitor.cpp
index 8478756..bcf6b81 100644
--- a/src/visitor.cpp
+++ b/src/visitor.cpp
@@ -152,7 +152,7 @@ std::any Visitor::visitConstDef(SysyParser::ConstDefContext *ctx) {
     if (_scope_tab.get_level()) {
       // local const array
       // Keep a pointer to the base address, alloca_ = &array, *alloca_ = &array[0]
-      auto alloca_ = build_InstAlloca(array_type, _state.current_bb);
+      auto alloca_ = build_InstAlloca(const_name , array_type, _state.current_bb);
       _scope_tab.push_name(const_name, alloca_);
       // first dim base, ptr = *alloca_ = &array[0]
       auto base_ptr = build_InstGEP(alloca_, {CONST0, CONST0}, _state.current_bb);
@@ -205,7 +205,7 @@ std::any Visitor::visitVarDef(SysyParser::VarDefContext *ctx) {
     }
     // local variable
     else {
-      auto alloca_ = build_InstAlloca(TypeHelper::TYPE_I32, _state.current_bb);
+      auto alloca_ = build_InstAlloca(var_name, TypeHelper::TYPE_I32, _state.current_bb);
       _scope_tab.push_name(var_name, alloca_);
       if (ctx->initVal()) {
         auto init_val = any_to_Value(visitInitVal(ctx->initVal()));
@@ -224,7 +224,7 @@ std::any Visitor::visitVarDef(SysyParser::VarDefContext *ctx) {
     auto array_type = ArrayType::build_from_list(dim_list);
     // local array
     if (_scope_tab.get_level()) {
-      auto alloca_ = build_InstAlloca(array_type, _state.current_bb);
+      auto alloca_ = build_InstAlloca(var_name, array_type, _state.current_bb);
       _scope_tab.push_name(var_name, alloca_);
       if (ctx->initVal()) {
         _state.arr_dim_index = 0;
@@ -891,7 +891,7 @@ std::any Visitor::visitFuncFParams(SysyParser::FuncFParamsContext *ctx) {
     auto fparam_type = any_to_Type(visitFuncFParam(fparam_ctx));
     auto fparam_name = fparam_ctx->IDENT()->getText();
     auto fparam      = std::make_shared<FParam>(fparam_name, fparam_type);
-    auto alloca_     = build_InstAlloca(fparam_type, _state.current_bb);
+    auto alloca_     = build_InstAlloca(fparam_name, fparam_type, _state.current_bb);
     build_InstStore(fparam, alloca_, _state.current_bb);
     _scope_tab.push_name(fparam_name, alloca_);
     _state.current_func->fparam_list.push_back(fparam);
diff --git a/src/visitor_factory.cpp b/src/visitor_factory.cpp
index f1e4a66..2b0a356 100644
--- a/src/visitor_factory.cpp
+++ b/src/visitor_factory.cpp
@@ -43,8 +43,9 @@ std::shared_ptr<InstStore> build_InstStore(
 }
 
 // a little bit different, we put all alloca in the head of each basic block
-std::shared_ptr<InstAlloca> build_InstAlloca(TypePtr_t type, std::shared_ptr<BasicBlock> parent_bb) {
+std::shared_ptr<InstAlloca> build_InstAlloca(const std::string & name, TypePtr_t type, std::shared_ptr<BasicBlock> parent_bb) {
   auto inst_alloca = std::make_shared<InstAlloca>(type, parent_bb);
+  inst_alloca->name = name;
   parent_bb->inst_list.insert(parent_bb->inst_list.begin(), inst_alloca);
   // parent_bb->inst_list.push_back(inst_alloca);
   return inst_alloca;
diff --git a/src/visitor_llir_gen.cpp b/src/visitor_llir_gen.cpp
index 5e66b9c..e8ac4f4 100644
--- a/src/visitor_llir_gen.cpp
+++ b/src/visitor_llir_gen.cpp
@@ -179,7 +179,7 @@ static void _gen_blocks(std::ostream &ostr, const std::list<BasicBlockPtr_t> &bl
             assert(cond->ir_seqno >= 0);
             assert(bb_true->ir_seqno >= 0);
             assert(bb_false->ir_seqno >= 0);
-            ostr << "i1 " << cond->ir_seqno << ", label %" << bb_true->ir_seqno << ", label %" << bb_false->ir_seqno;
+            ostr << "i1 %" << cond->ir_seqno << ", label %" << bb_true->ir_seqno << ", label %" << bb_false->ir_seqno;
           }
           break;
         }
@@ -401,6 +401,7 @@ static void _gen_blocks(std::ostream &ostr, const std::list<BasicBlockPtr_t> &bl
           assert(inst->ir_seqno != -1);
           auto pointer_type = Type::asType<PointerType>(inst->type);
           ostr << "%" << inst->ir_seqno << " = alloca " << pointer_type->pointed_type->to_IR_string() << ", align 4";
+          ostr << "    ;" << inst->name;
           break;
         }
         case InstTag::Zext: {