RISC-V Design · All levels
Instruction Encoding and Format Families: Reports and Metrics
Reports and Metrics for Instruction Encoding and Format Families.
Reports and metrics
Reports and Metrics for Instruction Encoding and Format Families is anchored on Decode critical-path depth, immediate-generation logic complexity, and illegal-instruction detection coverage.. Convert observations into mechanism-backed decisions with explicit ownership.
Before/after trend
diagram
BEFORE / AFTER TREND - Instruction Encoding and Format Families
Decode critical-path depth, immediate-generation logic complexity, and illegal-instruction detection coverage.
^
| 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.Root-cause tree
diagram
ROOT CAUSE TREE - Instruction Encoding and Format Families
Decode critical-path depth, immediate-generation logic complexity, and illegal-instruction detection coverage. regressed
|
reproducible on fixed seed?
/ \
no yes
| |
env/tool drift first failing domain?
/ | \
decode execute memory/MMU
| | |
control map bypass/FU TLB/walk/perm
|
privilege/CSR side effects checked?
Stop at first confirmed mechanism, then assign explicit owner + fix proof.Track Decode critical-path depth, immediate-generation logic complexity, and illegal-instruction detection coverage. on representative workloads, not just microbenchmarks.
Include build/runtime/privilege metadata in report headers.
Pair performance movement with correctness and reliability checks.
Report tail stability, not only mean uplift.