ExprCodegenTest failed to load IR file

/data/jenkins/workspace/impala-cdh5-exhaustive-release/repos/Impala/be/src/exprs/expr-codegen-test.cc:245
Value of: status.ok()
  Actual: false
Expected: true

  // Get TestGetConstant() IR function
  stringstream test_udf_file;
  test_udf_file << getenv("IMPALA_HOME") << "/be/build/debug/exprs/expr-codegen-test.ll";
  scoped_ptr<LlvmCodeGen> codegen;
  status = LlvmCodeGen::LoadFromFile(&pool, test_udf_file.str(), "test", &codegen);
  ASSERT_TRUE(status.ok());