Source codes of 2021-CPU experiment team7.
This project focuses on creating a processor that can compile a ray tracing program written in Ocaml. Ver2 contains final processor.
Created based on MIPS ISA.
Compiler is modified version of mincaml(http://esumii.github.io/min-caml/). Some optimizations are additionally applied. The optimizations reduced about 70% instructions compared with naive min-caml.
The core is pipeline processor which has 5 stages (Fetch, Decode, Exec1, Exec2, MemoryAccess).
The simulator behaves in the same way as the core does in software.
It mainly supports to find bugs in the compiler when core implementation does not catch up.
It contains fadd, fsub, fmul, fdiv, fsqrt, and some easy instructions (compare, neg).
To improve computation efficiency, Newton's method (an approximation method) is used in fdiv and fsqrt.