Heat the olive oil in a large skillet over medium heat. Add the garlic and cook, stirring, until fragrant, about 30 seconds. Add the asparagus, 1/4 teaspoon salt and some pepper and cook, stirring, until the asparagus is bright green and crisp-tender, 5 to 7 minutes. Add the olives, basil and 1/4 teaspoon salt and toss well. Serve.