MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202647102579 A) filed by Google LLC on August 25, 2026, for Efficient Hybrid Freelist For Fast Register Name Allocation.
Inventors include Chang, Wan Yun; Nguyen, Dung Quoc; Bonanno, James Joseph; Esper, John Michael; Lin, Chunyu; Priyadarshi, Shivam; Lee, Chang-Chia; and Senthil Kumar, Shvetha.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: Methods, systems, and apparatus for maintaining a hybrid freelist for register renaming. One of the methods includes maintaining a hybrid freelist representing physical registers that are available for register renaming, wherein the hybrid freelist comprises a plurality of entries having an order, each entry comprising a pair of bits for each physical register of a plurality of physical registers, wherein the pair of bits for each entry comprises a valid bit and a commit bit representing a valid state and a commit state respectively for a physical register. A head pointer and a tail pointer of the freelist are used to perform in-order allocation of free physical register names from the plurality of entries of the freelist.
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