These microbenchmarks test our modifications to RISC-V that add Floating-Point Exceptions (FPEs) and Precise Pipelined Exceptions (PPEs).
There are two microbenchmarks in this repository:
latency: A pathological worst-case where every iteration of a loop causes a floating-point exception. This serves to find the amount of time required to make the processor change its privilege and jump to the handler code.sweep: A sweeper program, which sweeps the period between floating-point exceptions. This helps show the diminishing costs of floating-point exceptions (FPEs) as the frequency of exceptional FP instructions decreases.
Both of these are C programs with no external dependencies other than libc.