diff --git a/src/SysYFIR/IRprinter.cpp b/src/SysYFIR/IRprinter.cpp
deleted file mode 100644
index b2a6b1e..0000000
--- a/src/SysYFIR/IRprinter.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-#include "IRPrinter.h"
-
-std::string print_as_op( Value *v, bool print_ty )
-{
-    std::string op_ir;
-    if( print_ty )
-    {
-        op_ir += v->get_type()->print(); 
-        op_ir += " ";
-    }
-
-    if (dynamic_cast<GlobalVariable *>(v))
-    {
-        op_ir += "@"+v->get_name();
-    }
-    else if ( dynamic_cast<Function *>(v) )
-    {
-        op_ir += "@"+v->get_name();
-    }
-    else if ( dynamic_cast<Constant *>(v))
-    {
-        op_ir += v->print();
-    }
-    else
-    {
-        op_ir += "%"+v->get_name();
-    }
-
-    return op_ir;
-}
-
-std::string print_cmp_type( CmpInst::CmpOp op )
-{
-    switch (op)
-    {
-    case CmpInst::GE:
-        return "sge";
-        break;
-    case CmpInst::GT:
-        return "sgt";
-        break;
-    case CmpInst::LE:
-        return "sle";
-        break;
-    case CmpInst::LT:
-        return "slt";
-        break;
-    case CmpInst::EQ:
-        return "eq";
-        break;
-    case CmpInst::NE:
-        return "ne";
-        break;
-    default:
-        break;
-    }
-    return "wrong cmpop";
-}
-
-std::string print_fcmp_type( FCmpInst::CmpOp op )
-{
-    switch (op)
-    {
-    case FCmpInst::GE:
-        return "uge";
-        break;
-    case FCmpInst::GT:
-        return "ugt";
-        break;
-    case FCmpInst::LE:
-        return "ule";
-        break;
-    case FCmpInst::LT:
-        return "ult";
-        break;
-    case FCmpInst::EQ:
-        return "ueq";
-        break;
-    case FCmpInst::NE:
-        return "une";
-        break;
-    default:
-        break;
-    }
-    return "wrong fcmpop";
-}