RISC-V Design · All levels
Register Conventions and Calling Discipline: Design Space
Design Space for Register Conventions and Calling Discipline.
Design space
Design Space for Register Conventions and Calling Discipline is anchored on Function-call overhead (instructions per call), spill/reload rate, and ABI conformance pass rate in integration tests.. Convert observations into mechanism-backed decisions with explicit ownership.
Trade latency and throughput against power and area.
Prefer architecture options with clear software contract impact.
Quantify extension-profile cost before enabling by default.
Keep bring-up and validation ownership explicit.
Trend lens
diagram
BEFORE / AFTER TREND - Register Conventions and Calling Discipline
Function-call overhead (instructions per call), spill/reload rate, and ABI conformance pass rate in integration tests.
^
| o target band
| o after fix + reruns
| o
| o baseline (failing)
+--------------------------------------------------> iteration
capture issue isolate mechanism close + monitor
Use this view to confirm the gain is causal and stable across seeds.