U.S.-China trade tensions, including tariffs on some products and the restrictions on sales to Huawei, are squeezing chipmakers. AMD said it saw some uncertainties across its supply chain driven by tariffs, trade concerns and the U.S. entities list. "In the second quarter, we stopped shipping to customers added to the U.S. entities list." AMD Chief Executive Officer Lisa Su said on a post-earnings call, adding that any impact from it was limited.