opt: Single-step execution performance optimization #908
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cebarobot
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Jul 2, 2025
Tang-Haojin
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Jul 22, 2025
* NEMU commit: bae4d4a1efdf343dd0737ff306263a3f445efb91 * NEMU configs: * riscv64-xs-ref_defconfig * riscv64-dual-xs-ref_defconfig * riscv64-xs-ref-debug_defconfig * riscv64-dual-xs-ref-debug_defconfig * riscv64-xs-ref_bitmap_defconfig Including: * OpenXiangShan/NEMU#908 * OpenXiangShan/NEMU#907 * OpenXiangShan/NEMU#912 * OpenXiangShan/NEMU#911 * OpenXiangShan/NEMU#914 * OpenXiangShan/NEMU#915 * OpenXiangShan/NEMU#916 * OpenXiangShan/NEMU#917
good-circle
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Jul 25, 2025
* NEMU commit: bae4d4a1efdf343dd0737ff306263a3f445efb91 * NEMU configs: * riscv64-xs-ref_defconfig * riscv64-dual-xs-ref_defconfig * riscv64-xs-ref-debug_defconfig * riscv64-dual-xs-ref-debug_defconfig * riscv64-xs-ref_bitmap_defconfig Including: * OpenXiangShan/NEMU#908 * OpenXiangShan/NEMU#907 * OpenXiangShan/NEMU#912 * OpenXiangShan/NEMU#911 * OpenXiangShan/NEMU#914 * OpenXiangShan/NEMU#915 * OpenXiangShan/NEMU#916 * OpenXiangShan/NEMU#917
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When executing in single-step mode, a simplified version of tcache is introduced to enhance the execution efficiency of instructions. In the ref mode, the performance of NEMU.so has increased from 5 MHz/s to 9 MHz/s.