32 lines
1.2 KiB
Markdown
32 lines
1.2 KiB
Markdown
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# Phase 21.5 — Optimization (ny-llvm crate line)
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Scope
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- Optimize hot paths for the crate (ny-llvmc) line using Hakorune scripts only.
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- Preserve default behavior; all risky changes behind dev toggles.
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- Measure EXE runtime (build once, run many) to avoid toolchain overhead noise.
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Targets (initial)
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- loop: integer accumulations (no I/O)
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- strlen: FAST=1 path (pointer → nyrt_string_length)
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- box: construct/destroy minimal boxes (String/Integer)
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Methodology
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- Build once via ny-llvmc; time execution only (`--exe` mode).
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- Runs: 3–5; report median and average (target ≥ 100ms per run).
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- Observe NYASH_VM_STATS=1 (inst/compare/branch) where relevant to correlate structure and runtime.
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Commands (examples)
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- tools/perf/phase215/bench_loop.sh --runs 5
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- tools/perf/phase215/bench_strlen.sh --runs 5 --fast 1
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- tools/perf/phase215/run_all.sh --runs 5 --timeout 120
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Dev Toggles (keep OFF by default)
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- NYASH_LLVM_FAST=1 (strlen FAST)
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- HAKO_MIR_BUILDER_JSONFRAG_NORMALIZE=1 (normalize)
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- HAKO_MIR_BUILDER_NORMALIZE_TAG=1 (tag, test-only)
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Exit Criteria
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- Representative microbenches stable (≤ 5% variance) and ≥ 80% of C baselines.
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- No regression in EXE canaries (loop/print/strlen FAST) and VM parity canaries.
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