diff --git a/src/midend/SysYIRGenerator.cpp b/src/midend/SysYIRGenerator.cpp
index 7ff316a..541c976 100644
--- a/src/midend/SysYIRGenerator.cpp
+++ b/src/midend/SysYIRGenerator.cpp
@@ -389,26 +389,7 @@ void SysYIRGenerator::compute() {
               case BinaryOp::ADD: resultValue = builder.createAddInst(lhs, rhs); break;
               case BinaryOp::SUB: resultValue = builder.createSubInst(lhs, rhs); break;
               case BinaryOp::MUL: resultValue = builder.createMulInst(lhs, rhs); break;
-              case BinaryOp::DIV: {
-                ConstantInteger *rhsConst = dynamic_cast<ConstantInteger *>(rhs);
-                if (rhsConst) {
-                  int divisor = rhsConst->getInt();
-                  if (divisor > 0 && (divisor & (divisor - 1)) == 0) {
-                    int shift = 0;
-                    int temp = divisor;
-                    while (temp > 1) {
-                      temp >>= 1;
-                      shift++;
-                    }
-                    resultValue = builder.createSRAInst(lhs, ConstantInteger::get(shift));
-                  } else {
-                    resultValue = builder.createDivInst(lhs, rhs);
-                  }
-                } else {
-                  resultValue = builder.createDivInst(lhs, rhs);
-                }
-                break;
-              }
+              case BinaryOp::DIV: resultValue = builder.createDivInst(lhs, rhs); break;
               case BinaryOp::MOD: resultValue = builder.createRemInst(lhs, rhs); break;
               }
             } else if (commonType == Type::getFloatType()) {