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Bump version strings to v0.2.0, update READMEs and benchmarks
- CLI --version and --help now show v0.2.0 - README: startup ~4ms, bench CW column updated - bench/README: zwasm 0.2.0, CW values refreshed - history.yaml: fix vector_ops outlier (0ms → 6ms) - future.md: zwasm version reference
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‎.dev/future.md‎

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@@ -26,7 +26,7 @@
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| GC | MarkSweepGc (D69, D70) |
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| Benchmark suite | 31 benchmarks (20 native + 11 wasm) |
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| Backends | VM (bytecode) + TreeWalk |
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| Wasm engine | zwasm v0.1.0 (external dependency) |
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| Wasm engine | zwasm v0.2.0 (external dependency) |
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---
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‎README.md‎

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@@ -18,7 +18,7 @@ a native implementation targeting behavioral compatibility with Clojure.
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## Highlights
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- **Fast startup** — ~5ms to evaluate an expression (ReleaseSafe)
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- **Fast startup** — ~4ms to evaluate an expression (ReleaseSafe)
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- **Small binary** — ~4MB single executable (ReleaseSafe)
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- **Single binary distribution** — `cljw build app.clj -o app`, runs without cljw installed
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- **Wasm FFI** — call WebAssembly modules from Clojure (523 opcodes including SIMD + GC)
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Once production-ready, ClojureWasm could enable workloads where the JVM
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is too heavy:
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- **Serverless functions** — ~4MB image + ~5ms cold start for AWS Lambda
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- **Serverless functions** — ~4MB image + ~4ms cold start for AWS Lambda
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or Fly.io, eliminating JVM warm-up penalties
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- **Wasm plugin host** — embed user-supplied .wasm modules as extensibility
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points (e.g., Cloudflare Workers-style logic, game scripting)

‎bench/README.md‎

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@@ -197,22 +197,22 @@ launch to exit) — languages with heavy runtimes (JVM, V8) pay startup cost.
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| Benchmark | CW | Python | Ruby | Node | Java* | C | Zig | TinyGo |
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|----------------------|------|--------|------|------|-------|-----|-----|--------|
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| fib_recursive | 19 | 17.1 | 37.7 | 25.2 | 20.3 | 1.2 | 1.7 | 3.3 |
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| fib_loop | 4 | 12.7 | 37.9 | 21.8 | 20.6 | 3.8 | 0.6 | 2.6 |
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| tak | 7 | 13.2 | 33.6 | 24.2 | 21.0 | 1.7 | 2.9 | 2.0 |
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| fib_loop | 5 | 12.7 | 37.9 | 21.8 | 20.6 | 3.8 | 0.6 | 2.6 |
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| tak | 8 | 13.2 | 33.6 | 24.2 | 21.0 | 1.7 | 2.9 | 2.0 |
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| arith_loop | 5 | 60.7 | 54.5 | 25.2 | 21.4 | 1.7 | 1.2 | 1.7 |
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| map_filter_reduce | 7 | 13.0 | 35.9 | 23.7 | 21.4 | 1.4 | 1.4 | 2.6 |
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| map_filter_reduce | 6 | 13.0 | 35.9 | 23.7 | 21.4 | 1.4 | 1.4 | 2.6 |
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| vector_ops | 6 | 13.5 | 31.6 | 22.7 | 24.1 | 1.3 | 1.4 | 2.3 |
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| map_ops | 5 | 12.8 | 30.8 | 22.3 | 18.7 | 1.0 | 1.7 | 2.4 |
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| list_build | 5 | 14.6 | 34.6 | 25.7 | 21.9 | 1.5 | 1.8 | 2.5 |
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| map_ops | 6 | 12.8 | 30.8 | 22.3 | 18.7 | 1.0 | 1.7 | 2.4 |
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| list_build | 6 | 14.6 | 34.6 | 25.7 | 21.9 | 1.5 | 1.8 | 2.5 |
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| sieve | 6 | 12.2 | 35.8 | 24.4 | 23.8 | 1.4 | 1.2 | 1.6 |
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| nqueens | 15 | 16.2 | 51.6 | 23.5 | 20.9 | 0.5 | 0.9 | 1.9 |
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| atom_swap | 6 | 11.7 | 36.2 | 24.0 | 20.9 | 1.4 | 2.9 | 3.5 |
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| gc_stress | 28 | 30.5 | 41.4 | 26.7 | 30.5 | 2.6 | --- | 20.2 |
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| lazy_chain | 8 | 15.4 | 33.0 | 26.1 | 22.2 | 2.6 | 1.6 | 2.2 |
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| atom_swap | 5 | 11.7 | 36.2 | 24.0 | 20.9 | 1.4 | 2.9 | 3.5 |
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| gc_stress | 26 | 30.5 | 41.4 | 26.7 | 30.5 | 2.6 | --- | 20.2 |
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| lazy_chain | 7 | 15.4 | 33.0 | 26.1 | 22.2 | 2.6 | 1.6 | 2.2 |
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| transduce | 6 | 12.6 | 36.2 | 23.5 | 23.7 | 1.3 | 1.7 | 1.9 |
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| keyword_lookup | 12 | 19.4 | 37.0 | 27.4 | 23.9 | 1.6 | 0.0 | 4.9 |
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| protocol_dispatch | 7 | 12.7 | 32.8 | 24.3 | 22.0 | 2.3 | 1.7 | 2.2 |
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| nested_update | 11 | 12.6 | 32.9 | 24.0 | 23.7 | 0.2 | 1.3 | 3.1 |
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| keyword_lookup | 11 | 19.4 | 37.0 | 27.4 | 23.9 | 1.6 | 0.0 | 4.9 |
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| protocol_dispatch | 6 | 12.7 | 32.8 | 24.3 | 22.0 | 2.3 | 1.7 | 2.2 |
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| nested_update | 10 | 12.6 | 32.9 | 24.0 | 23.7 | 0.2 | 1.3 | 3.1 |
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| string_ops | 25 | 25.2 | 38.0 | 24.5 | 24.8 | 4.3 | 2.0 | 1.5 |
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| multimethod_dispatch | 6 | 13.3 | 33.8 | 24.6 | 20.0 | 2.6 | 0.9 | 2.1 |
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| real_workload | 10 | 13.6 | 37.1 | 24.7 | 26.6 | 0.9 | 1.0 | 1.7 |
@@ -232,7 +232,7 @@ Measured as ReleaseSafe builds on ARM64 macOS.
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| Runtime | Version | Binary Size |
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|----------------|--------------|-------------|
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| **zwasm** | 0.1.0 | **1.1 MB** |
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| **zwasm** | 0.2.0 | **1.1 MB** |
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| wasmtime | 41.0.1 | 56.3 MB |
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| bun | 1.3.8 | 57.1 MB |
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| node | v24.13.0 | 61.7 MB |
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## Latest Wasm Runtime Results (2026-02-14)
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CW's built-in Wasm runtime (zwasm, Register IR + ARM64/x86_64 JIT)
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CW's built-in Wasm runtime (zwasm v0.2.0, Register IR + ARM64/x86_64 JIT)
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vs 4 other Wasm runtimes. Apple M4 Pro, 48GB RAM.
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21 benchmarks (WAT 5, TinyGo 11, Shootout 5), hyperfine 3 runs + 1 warmup.
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‎bench/history.yaml‎

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@@ -907,27 +907,27 @@ entries:
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- id: "v0.2.0"
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date: "2026-02-14"
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reason: "v0.2.0 release"
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commit: "d7f4a29"
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commit: "5f27625"
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build: ReleaseSafe
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backend: vm
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results:
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fib_recursive: {time_ms: 18, mem_mb: 11.6}
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fib_recursive: {time_ms: 19, mem_mb: 11.6}
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fib_loop: {time_ms: 5, mem_mb: 11.6}
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tak: {time_ms: 8, mem_mb: 11.6}
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tak: {time_ms: 11, mem_mb: 11.6}
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arith_loop: {time_ms: 5, mem_mb: 11.6}
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map_filter_reduce: {time_ms: 6, mem_mb: 12.2}
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map_filter_reduce: {time_ms: 7, mem_mb: 12.2}
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vector_ops: {time_ms: 6, mem_mb: 16.7}
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map_ops: {time_ms: 5, mem_mb: 15.6}
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list_build: {time_ms: 4, mem_mb: 12.2}
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sieve: {time_ms: 5, mem_mb: 15.1}
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map_ops: {time_ms: 6, mem_mb: 15.6}
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list_build: {time_ms: 6, mem_mb: 12.2}
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sieve: {time_ms: 6, mem_mb: 15.1}
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nqueens: {time_ms: 15, mem_mb: 22.6}
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atom_swap: {time_ms: 5, mem_mb: 11.6}
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gc_stress: {time_ms: 26, mem_mb: 17.4}
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lazy_chain: {time_ms: 6, mem_mb: 11.6}
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transduce: {time_ms: 7, mem_mb: 11.6}
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keyword_lookup: {time_ms: 12, mem_mb: 11.6}
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protocol_dispatch: {time_ms: 38, mem_mb: 11.6}
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lazy_chain: {time_ms: 7, mem_mb: 11.6}
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transduce: {time_ms: 6, mem_mb: 11.6}
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keyword_lookup: {time_ms: 11, mem_mb: 11.6}
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protocol_dispatch: {time_ms: 6, mem_mb: 11.6}
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nested_update: {time_ms: 10, mem_mb: 16.8}
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string_ops: {time_ms: 24, mem_mb: 21.3}
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multimethod_dispatch: {time_ms: 5, mem_mb: 11.6}
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string_ops: {time_ms: 25, mem_mb: 21.3}
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multimethod_dispatch: {time_ms: 6, mem_mb: 11.6}
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real_workload: {time_ms: 10, mem_mb: 18.6}

‎src/main.zig‎

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@@ -45,7 +45,7 @@ const embed_trailer_size = 12;
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fn printHelp() void {
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const stdout: std.fs.File = .{ .handle = std.posix.STDOUT_FILENO };
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_ = stdout.write(
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\\ClojureWasm v0.1.0
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\\ClojureWasm v0.2.0
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\\
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\\Usage:
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\\ cljw [options] [file.clj]
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return;
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} else if (std.mem.eql(u8, arg, "--version")) {
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const stdout: std.fs.File = .{ .handle = std.posix.STDOUT_FILENO };
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_ = stdout.write("ClojureWasm v0.1.0\n") catch {};
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_ = stdout.write("ClojureWasm v0.2.0\n") catch {};
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return;
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} else if (std.mem.eql(u8, arg, "--tree-walk")) {
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use_vm = false;
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return;
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}
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_ = stdout.write("ClojureWasm v0.1.0\n") catch {};
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_ = stdout.write("ClojureWasm v0.2.0\n") catch {};
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var editor = line_editor.LineEditor.init(allocator, env);
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defer editor.deinit();

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