IJITEST_20261027163055_IJITEST-2026-017 20261027163055 International Journal of Innovative Trends in Engineering Science and Technology editor@ijitest.org Felix Academic Publications International Journal of Innovative Trends in Engineering Science and Technology IJITEST 3139-6887 07 2026 1 5 UTIKUPPALA RAJASEKHAR JNTUGV Miracle Educational Society Group of Institutions Dr. T RAVI BABU JNTUGV Miracle Educational Society Group of Institutions T CHANDRA GUPTHA JNTUGV Miracle Educational Society Group of Institutions The Arithmetic Logic Unit (ALU) is a fundamental component of modern processors, responsible for arithmetic, logical, comparison, and shift operations. Conventional ALU architectures face rising power consumption, limited scalability, and inefficient hardware utilization, and most existing designs stop at RTL functionality without addressing complete ASIC implementation. This work presents the design and implementation of an Adaptive Execution Unit (AEU), a modular execution architecture that integrates dedicated arithmetic, logical, multiplier, divider, comparator, and barrel-shifter modules under a centralized control unit. A dynamic precision controller activates only the datapath slices required by an operation, while integrated clock gating and operand isolation reduce unnecessary switching activity. The design is described in synthesizable Verilog HDL and implemented through an industrial RTL-to-GDSII flow using Cadence Genus for synthesis and Cadence Innovus for physical design, covering floorplanning, placement, clock-tree synthesis, routing, timing analysis, and physical verification. Results confirm positive timing slack, 97.5% clock-gated flip-flops, 0% routing congestion, and full antenna and DRC/LVS compliance, demonstrating an efficient, scalable, and implementation-aware execution architecture suitable for modern VLSI processors. 07 30 2026 1 4 https://creativecommons.org/licenses/by/4.0/ 10.5281/zenodo.22115427 https://ijitest.org/article/ijitest-2026-017 https://ijitest.org/api/files/published/IJITEST-2026-017-published.pdf https://ijitest.org/api/files/published/IJITEST-2026-017-published.pdf