Method GetIsNull

be/src/codegen/codegen-anyval.cc:232–278

}

llvm::Value* CodegenAnyVal::GetIsNull(const char* name) const {
  switch (type_.type) {
    case TYPE_BIGINT:
    case TYPE_DOUBLE: {
      // Lowered type is of form { i8, * }. Get the i8 value.
      // On aarch64, Lowered type is of form { i64, * }
      llvm::Value* is_null = builder_->CreateExtractValue(value_, 0);
#ifndef __aarch64__
      DCHECK(is_null->getType() == codegen_->i8_type());
#else
      DCHECK(is_null->getType() == codegen_->i64_type());
#endif
      return builder_->CreateTrunc(is_null, codegen_->bool_type(), name);
    }
    case TYPE_DECIMAL: {
      // Lowered type is of the form { {i8}, ... }
      uint32_t idxs[] = {0, 0};
      llvm::Value* is_null_i8 = builder_->CreateExtractValue(value_, idxs);
      DCHECK(is_null_i8->getType() == codegen_->i8_type());
      return builder_->CreateTrunc(is_null_i8, codegen_->bool_type(), name);
    }
    case TYPE_STRING:
    case TYPE_VARCHAR:
    case TYPE_CHAR:
    case TYPE_FIXED_UDA_INTERMEDIATE:
    case TYPE_TIMESTAMP:
    case TYPE_ARRAY:
    case TYPE_MAP:
    case TYPE_STRUCT: {
      // Lowered type is of form { i64, *}. Get the first byte of the i64 value.
      llvm::Value* v = builder_->CreateExtractValue(value_, 0);
      DCHECK(v->getType() == codegen_->i64_type());
      return builder_->CreateTrunc(v, codegen_->bool_type(), name);
    }
    case TYPE_BOOLEAN:
    case TYPE_TINYINT:
    case TYPE_SMALLINT:
    case TYPE_INT:
    case TYPE_DATE:
    case TYPE_FLOAT:
      // Lowered type is an integer. Get the first byte.
      return builder_->CreateTrunc(value_, codegen_->bool_type(), name);
    default:
      DCHECK(false);
      return NULL;
  }
}

void CodegenAnyVal::SetIsNull(llvm::Value* is_null) {
  switch(type_.type) {