CPU Emulator Benchmarking Question
other
I've been writing a 6502 CPU emulator and have a hot path which is a big switch statement to handle each of the 256 opcodes:
https://github.com/markjamesm/Velutia/blob/main/src/Processor/Cpu.cs#L274
I'm thinking of refactoring this to use a jump table that has delegates, but I was curious on how I could benchmark the performance of both cases using Benchmark.Net
I know benchmarking can be tricky, but do I
1. Benchmark the Decode() method that the switch statement belongs to
2. Benchmark that same method, but with the jump table?
https://github.com/markjamesm/Velutia/blob/main/src/Processor/Cpu.cs#L274
I'm thinking of refactoring this to use a jump table that has delegates, but I was curious on how I could benchmark the performance of both cases using Benchmark.Net
I know benchmarking can be tricky, but do I
1. Benchmark the Decode() method that the switch statement belongs to
2. Benchmark that same method, but with the jump table?
GitHub
Instruction-Level Accurate MOS 6502 CPU Emulator that Passes all Single Step Tests. - markjamesm/Velutia
