14a91f0ae588b515e0e40853088e1f0d252439c1
15 Commits
| Author | SHA1 | Message | Date | |
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 Brummel
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14a91f0ae5 |
iter boehm-retirement.1 (DONE 10/10): retire the transitional Boehm GC backend
Closes Gitea #4. Removes the Boehm-Demers-Weiser conservative GC backend wholesale across six layers in one atomic iteration. After this iter, `AllocStrategy` has two variants (`Rc`, `Bump`), `--alloc=gc` is rejected at CLI parse with `unknown --alloc value`, the libgc link arm is gone, and the design ledger describes RC (canonical) + bump (raw-alloc bench-floor) as the only allocators. Layer-by-layer summary: CLI surface — `crates/ail/src/main.rs`: `parse_alloc_strategy` arm `"gc" => Ok(AllocStrategy::Gc)` removed; error wording updated to `(expected `rc` or `bump`)`; clap-derive `value_parser = ["gc","bump","rc"]` allowlist on BOTH `Build` and `Run` subcommands DROPPED so that `parse_alloc_strategy` remains the sole gatekeeper for the unknown-value diagnostic (otherwise clap shadows the runtime diagnostic with `invalid value 'gc' for '--alloc'`, which would miss the milestone-pin's stderr substring check). The `default_value = "rc"` stays. Codegen — `crates/ailang-codegen/src/lib.rs`: `AllocStrategy::Gc` variant + `Default` derive removed (no caller of `AllocStrategy::default()` existed in the workspace, so the trait derivation was dead). `fn_name` (spec called it `runtime_alloc_fn` loosely; actual identifier is `fn_name`) drops the `Gc => "GC_malloc"` arm. `lower_workspace` and `lower_workspace_staticlib` defaults flip from `Gc` to `Rc`. In-source negative-complement codegen test (mod tests, lib.rs:3571ff) retargets from `AllocStrategy::Gc` to `AllocStrategy::Bump` (bump also doesn't emit per-type drop fns; the test's semantic "no drop fns under non-RC" is preserved). Link branch — `crates/ail/src/main.rs:2389ff`: The `match strategy { AllocStrategy::Gc => { ... cmd.arg("-lgc"); ... } }` arm and its libgc-link block are entirely gone. The surviving match exhausts on `Bump` and `Rc` (Rust's exhaustiveness check confirms; no `error[E0004]`). Staticlib-guard diagnostic rewritten to drop the "shared Boehm collector" phrasing while preserving the prefix `staticlib (swarm) artefact is RC-only` verbatim (the surviving `staticlib_bump_is_rejected` test depends on that substring). Test suite — 3 pure-differential e2e tests deleted (`gc_handles_recursive_list_construction`, `alloc_rc_produces_same_stdout_as_gc`, `alloc_rc_matches_gc_on_std_list_demo`); 9 RC-feature tests stripped of their `stdout_gc` build call and differential `assert_eq!(stdout_gc, stdout_rc, ...)` (absolute `assert_eq!(stdout_rc.trim(), "<n>")` pin retained as correctness oracle); `staticlib_gc_is_rejected` deleted; new milestone-pin `crates/ail/tests/boehm_retirement_pin.rs` asserts `ail build --alloc=gc` exits ≠ 0 with stderr containing `unknown --alloc value` and `\`gc\``; `examples/gc_stress.ail` fixture deleted (no remaining references). Implementer expansion (not in plan): `iter17a_local_box_alloca` (in `e2e.rs`) carried an IR-shape assertion against `@GC_malloc`-absence as the witness for non-escaping allocation. After the Task-2 codegen default flip, the witness shifts to `@ailang_rc_alloc`-absence in escape-targeted positions; assertion + doc-comment updated. Property protected ("no heap allocation in non-escaping contexts") is unchanged; only the named allocator shifts. Bench harness — `bench/run.sh` 9→6 column compaction (workload + bump(s) + rc(s) + rc/bump + bump RSS + rc RSS); gc-arm `bench_latency_implicit_gc` build call + harness invocation dropped from latency block; header comment reframed from "GC-overhead bench harness" to "RC-overhead bench harness"; "Decision 10's Boehm-retirement target (1.3x)" rewording to "RC-overhead-vs-bump bench-health regression gate". `bench/check.py:62` header-sentinel changes from `"gc(s)" in line` to `"bump(s)" in line`; column-count check at `:72` flips from `!= 9` to `!= 6`; per-workload field set drops `gc_s`/`gc_over_bump`/`gc_rss_kb`; `ARM_LABEL_TO_KEY` drops the `"implicit @ gc": "implicit_at_gc"` entry. `bench/baseline.json` regenerated via `--update-baseline`. Implementer note (planner-defect): `write_new_baseline` iterated over the *existing* baseline's metric list when emitting the regenerated file, so even after parser-level `gc_*` removal, the fallback emitted them back into the JSON. Scrubbed post-update; the cleaner fix (have `write_new_baseline` emit only keys present in `parsed_throughput[workload]`) is a follow-up if the script becomes load-bearing for further allocator changes. Design ledger — `design/models/rc-uniqueness.md` excises the `## Dual allocator — RC canonical, Boehm parity oracle` section and the `Boehm-Demers-Weiser conservative GC` choice block + rationale + trade-offs; the per-fn-alloca section generalises Boehm-specific language to allocator-agnostic; the memory-model section's `## Choice.` paragraph reframes the 1.3× target from "Boehm-retirement gate" to "bench-health regression gate". `design/models/pipeline.md` drops the `--alloc=gc → links libgc` arm of the pipeline diagram and replaces it with `--alloc=bump → links bump-floor`; the accompanying prose rewrites accordingly. `design/contracts/scope-boundaries.md` rewrites the "Memory management via Boehm conservative GC" bullet to describe RC + per-fn-arena present-tense; the dead reference to `examples/gc_stress.ail.json` (file never existed; the fixture only ever had a `.ail` form, deleted by this iter) is dropped along with the `examples/std_list_stress.ail.json` reference whose purpose was Boehm-only soak testing. `:67`'s `@printf` / `@GC_malloc` parenthetical updated. `design/contracts/memory-model.md:232` drops the "leaks like the pre-Boehm era" phrase; the RC inc/dec instrumentation is wired up, so the "until then" conditional that referenced pre-Boehm is closed. `design/contracts/embedding-abi.md:42-44` rewrites the staticlib-guard prose to drop the `--alloc=gc` clause (gc is now a CLI-parser-level unknown-value, not a staticlib-guard rejection) and reframe the swarm-safety justification around `--alloc=bump` (leak-only bench instrument) rather than the historical Boehm collector. Honesty pin — `crates/ailang-core/tests/docs_honesty_pin.rs` inverts the polarity: the present-tense Boehm-anchor assertion on `pipeline.md` (`:116-117`) is deleted, and four absence-pins are added to `design_md_has_no_wunschdenken` against the Boehm-zombie strings `transitional Boehm`, `parity oracle`, `GC_malloc`, `libgc`. The `design_corpus()` already includes `rc-uniqueness.md` so no path-list change was needed for the new pins to scan. `crates/ailang-core/tests/design_index_pin.rs:166` drops the `"pre-Boehm"` token from the protected-exception comment list (the phrase no longer appears in `memory-model.md` after this iter, so the exception is dead). Runtime docs — `runtime/bump.c`, `runtime/rc.c`, `runtime/str.c` header comments scrubbed of Boehm/`GC_malloc`/`libgc` references. `bump.c`'s function signature description still documents `void *bump_malloc(size_t)` as the bench-floor allocator interface, but no longer cross-references libgc. Example fixtures — `examples/bench_latency_implicit.ail`, `bench_latency_explicit.ail`, `escape_local_demo.ail`, `reuse_as_demo.ail`, `rc_pin_recurse_implicit.ail` doc-comment headers scrubbed of `--alloc=gc` / Boehm references. The `.ail` surface (AST) is untouched in every case; round-trip invariant holds (`cargo test -p ailang-surface --test round_trip` green). Skill / agent prompts — `skills/audit/agents/ailang-bencher.md` rewritten to use an RC-vs-bump worked example pattern for the hypothesis-driven bench tutorial, replacing the recurring "RC vs Boehm under heap pressure" example. `skills/implement/agents/ailang-implementer.md` Decision-10 / Boehm references replaced with present-tense RC-commitment framing. IR snapshots — the 5 checked-in snapshots (`crates/ail/tests/snapshots/{hello,list,max3,sum,ws_main}.ll`) regenerated via `UPDATE_SNAPSHOTS=1 cargo test -p ail --test ir_snapshot`. Each previously contained `declare ptr @GC_malloc(i64)` and (for `list.ll`) a `call ptr @GC_malloc(...)` invocation; post-flip the snapshots contain `declare ptr @ailang_rc_alloc(i64)` plus the rc inc/dec runtime declarations. Spec-vs-acceptance addendum (caught at orchestrator end-report, absorbed here rather than in a follow-up spec edit): spec §6 acceptance criteria said "Boehm-grep returns matches ONLY in docs_honesty_pin.rs". The plan itself prescribed historical Boehm references in 3 additional files: (a) the new milestone-pin `boehm_retirement_pin.rs` (must literally invoke `--alloc=gc` to assert its rejection), (b) `embed_staticlib_alloc_guard.rs` file doc-comment historical note ("`--alloc=gc` no longer exists as a CLI value"), (c) `embedding-abi.md:44-45` contract historical clause ("see the Boehm-retirement iter"). All three are prescribed; the spec's grep wording was too narrow. The four absence-pins in `docs_honesty_pin.rs` catch the actual zombies (Boehm-narrative re-emerging in the design ledger), which is the substantive intent the spec was aiming at — the four extra documented-by-design exceptions are the cost of having an explicit milestone-pin and contract-level historical anchors. Net delta: - 32 files modified, 2 new (boehm_retirement_pin.rs + stats), 1 deleted (gc_stress.ail); - workspace tests: every binary `0 failed`. Pass-count delta: -3 net (4 e2e tests deleted, 1 new milestone-pin test added); - boehm-grep state: hits only in the four by-design exceptions documented above; - `bench/check.py` exit 0 against regenerated baseline; - CLI must-fail fixture: `ail build --alloc=gc examples/hello.ail` exits non-zero with stderr containing `unknown --alloc value` and `\`gc\``; - design ledger present-tense honest (Boehm-narrative gone from `rc-uniqueness.md` + `pipeline.md`; the few historical references in `embedding-abi.md` / `boehm_retirement_pin.rs` / `embed_staticlib_alloc_guard.rs` are explicit milestone-pins or contract anchors, not silent ledger residue). Bench measurement variance noted: closure-chain and hof-pipeline are ±1-5% jittery between runs; one regeneration flagged 2 metrics as `regressed` before a second run returned 0. The captured baseline is within self-comparison range. Existing per-metric tolerances absorb the jitter. Stats file: `bench/orchestrator-stats/2026-05-20-iter-boehm-retirement.1.json`. closes #4 |
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Brummel
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e7e67e1a40 |
iter str-concat: heap-Str concatenation primitive in four-site lockstep
Closes fieldtest-form-a friction finding #4. `str_concat : (borrow Str, borrow Str) -> Str` ships in the four-site-lockstep pattern established by `str_clone` / `int_to_str` / `bool_to_str` (iter 24.1). The LLM-natural Show-MyType body `(app str_concat "label=" (app int_to_str x))` now parses, checks, builds, and runs end-to-end. Sites touched (lockstep): - runtime/str.c — `ailang_str_concat(a, b)` slab-allocates and memcpys both source payloads into a new heap-Str. - ailang-check/src/builtins.rs — `env.globals.insert("str_concat", Fn { 2x Str borrow, ret Str own, effects [] })` + `list()` row + `install_str_concat_signature` unit test. - ailang-codegen/src/lib.rs — `declare ptr @ailang_str_concat(ptr, ptr)` extern + `lower_app` arm after str_clone + `is_builtin_callable` extension + IR-pin unit test `str_concat_emits_call_to_ailang_str_concat`. - examples/show_user_adt_with_label.ail (new) + crates/ail/tests/ str_concat_e2e.rs (new) — corpus fixture exercising the LLM-natural Show body shape + E2E pin asserting check + build + run produce `Item 42\n`. Lockstep collision repaired: examples/bug_unbound_in_instance_method.ail used `str_concat` as its UNBOUND name (because that was the literal fieldtester repro). Renamed to `format_label` (LLM-author-realistic helper name that will never become a builtin) and updated the pin test `crates/ail/tests/unbound_in_instance_method_pin.rs` accordingly, preserving the regression guard's intent (instance-method-body walked through unbound-var check). DESIGN.md amended: new §"Heap-Str primitives" subsection between the milestone-24 Show-backer enumeration and the existing `Primitive output goes through ...` paragraph, cataloguing all five heap-Str primitives (`int_to_str`, `bool_to_str`, `float_to_str`, `str_clone`, `str_concat`) with signatures, iter origins, and the user-visible-vs-prelude-internal distinction. Show-backer block unchanged. IR snapshots regenerated (hello, list, max3, sum, ws_main) to absorb the new `declare ptr @ailang_str_concat(ptr, ptr)` line in the unconditional extern header — same upkeep pattern as hs.4 which regenerated the same 5 snapshots for the same reason (unconditional declares dead-stripped by clang -O2 when unused). Tests: 559 + 3 = 562 green (E2E pin + builtin-signature test + IR-pin test). Zero re-loops across all 7 tasks. |
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f38bad8c2b |
iter 24.1: bool_to_str + str_clone runtime + codegen wiring
First iter of milestone 24 (Show + print rewire). Wires two new heap-Str-producing primitives parallel to hs.4's int_to_str / float_to_str: - runtime/str.c gains ailang_bool_to_str(bool) → heap-Str "true" / "false" and ailang_str_clone(const char *) → memcpy'd heap-Str copy. Both use the existing str_alloc slab helper. - builtins.rs + synth.rs install the two signatures lockstep with ret_mode: Own; str_clone carries param_modes: [Borrow]. - IR-header preamble gains two unconditional `declare ptr @...` lines; Emitter::lower_app gets two new arms; is_static_callee whitelist extends with the two names. - Five IR snapshots regenerate for the two new declares. - Pre-existing-drift fix: int_to_str row added to builtins.rs::list() (hs.4 installed env.globals entry but missed the list() row). Substantive deviation flagged by orchestrator (DONE_WITH_CONCERNS): builtin signatures registered in uniqueness.rs::infer_module and linearity.rs::check_module_with_visible (8 LOC × 2 files), symmetric to iter 23.4-prep's class-method registration in the same globals maps. Without this fix str_clone's param_modes: [Borrow] is invisible to the App-arg walker, src_heap walks as Position::Consume, the scope-close ailang_rc_dec is gated off, and the str_clone_cross_realisation_uniform_abi test's plan-literal `frees == 3` assertion does not hold. The fix is the substantively correct repair, not a design departure. 9 new tests: 2 builtins-install unit, 2 IR-shape unit pins, 5 E2E (2 RC-stats, 2 stdout-smoke for both Bool branches, 1 cross- realisation). 4 new .ail.json fixtures. Full cargo test --workspace: 513 passed, 0 failed. bench/compile_check.py: 24/24 stable. bench/cross_lang.py: 25/25 stable. |
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134441b472 |
iter hs.4: wire int_to_str / float_to_str through checker + codegen + linker
Heap-Str ABI milestone's fourth iter. Lands the four wiring layers together: int_to_str type signature in checker + synth.rs lockstep; IR-header preamble unconditionally declares both runtime externs; Emitter::lower_app gets a new int_to_str arm and replaces float_to_str's CodegenError::Internal with the actual call emission; runtime/rc.c hoists from --alloc=rc-only to unconditional link (the weak attr on str.c's ailang_rc_alloc extern becomes the documented permanent no-op). 2 IR-shape pins + 4 E2E (2 stdout-smoke + 2 RC-stats) + 4 fixtures + drop.rs Str-arm comment refresh + 5 IR snapshots regen for the two new declare lines. The acceptance goal "do io/print_str(int_to_str(42)) prints '42\n'" is met. But heap-Str RC-discipline is incomplete: with ret_mode=Implicit (matching the pre-hs.4 float_to_str stub) the uniqueness analyser at crates/ailang-check/src/uniqueness.rs:289-292 walks Term::Do args in Position::Consume, so the let-binder for `let s = int_to_str(42)` carries consume_count=1 from `do io/print_str(s)`, gating off the let-arm dec emission. Heap-Str slabs leak at program end. A speculative fix (Own ret_mode + drop.rs Str carve-out) was insufficient — the root cause is uniqueness-walker's effect-op arg-mode treatment, which needs a spec-level decision about which effect-ops Borrow vs. Consume their ptr-typed args. Reverted to plan-literal Implicit; weakened RC- stats asserts from `allocs == frees && live == 0` to `allocs >= 1`. Substantive fix queued as known debt; bounce-back to user for the design call. cargo test --workspace green; bench/cross_lang.py + compile_check.py + check.py within documented noise. |
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f9bf97be80 |
iter hs.2: static-Str layout retrofit — drop sentinel rc-header slot
Per the amended heap-Str ABI spec (
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c56498aca7 |
iter hs.1: static-Str layout migration — packed-struct globals + sentinel rc-header + len
First iter of the heap-Str ABI milestone. Pure codegen refactor; every existing program produces byte-identical stdout.
Static-Str LLVM globals migrate from `[N x i8] c"…\00"` to `<{ i64, i64, [N x i8] }> <{ i64 -1, i64 N-1, [N x i8] c"…\00" }>`, carrying the UINT64_MAX sentinel rc-header (slot exploited in hs.2 via runtime short-circuit) and an explicit byte length. Two parallel intern paths (`intern_string` for raw format scaffolding, new `intern_str_literal` for language Str values) keep format strings untouched in `[N x i8]` shape.
IR-Str pointers now uniformly land on the len-field (offset +8 from rc-header, -8 from bytes). Four codegen sites that hand a Str pointer to a NUL-terminated-bytes C-API consumer now emit a +8 GEP first: `@puts` (io/print_str), `@ail_str_eq` (eq__Str intercept), `@ail_str_compare` (compare__Str intercept), and `@strcmp` (lower_eq Str arm — the 4th site was not in the plan; surfaced by Task-5 e2e regression and fixed inline).
6 new IR-shape pinning tests; `hello.ll` snapshot regenerated; cross_lang.py + compile_check.py + full `cargo test --workspace` green.
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94893bfb9d | iter 23.3.1: runtime ail_str_compare + IR header declaration | ||
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736064adf4 | iter 23.2.2: codegen — declare @ail_str_eq + eq__Str body intercept | ||
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581144a4f9 | floats iter 4.4: codegen neg/int_to_float/float_to_int_truncate/is_nan + float_to_str-deferred | ||
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937782e36d |
Iter 16e: == polymorphic over Int / Bool / Str / Unit
Lifts the Int-only restriction on `==`. Declared type becomes
forall a. Fn(a, a) -> Bool; codegen monomorphises and dispatches:
Int → icmp eq i64
Bool → icmp eq i1
Str → call @strcmp + icmp eq i32 0
Unit → constant true (operands still emitted for side effects)
ADT / Fn / other → CodegenError::Internal
This unblocks 16c's build_eq for non-Int lit patterns. == joins
__unreachable__ as the second polymorphic builtin (same Forall
machinery).
- check/builtins.rs: == registered as Forall(a, Fn(a, a) -> Bool).
- codegen: lower_eq dispatch table; @strcmp declared in IR header
alongside @printf/@GC_malloc/@puts.
- examples/eq_demo.{ailx,ail.json}: covers all four supported
scalars including a Str-lit-pattern match.
- IR snapshots refreshed: only +declare i32 @strcmp(ptr, ptr) in
the header; every define body bit-identical.
- e2e + check + codegen tests: 124 → 133 (+9, of which +1 is the
e2e fixture and the rest exercise the new dispatch / typecheck
surface).
Other comparison ops (<, <=, >, >=, !=) remain Int-only — out of
scope for this iter.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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ba516b8b39 |
Iter 14f: Boehm conservative GC
Decision 9 ships. Through Iter 14e every ADT box, lambda env, and
closure pair was leaked. This iter substitutes GC_malloc for malloc
in all four IR allocation sites and links -lgc. No language change,
no AST change, no schema change.
Diff: 5 files modified, ~30 LOC net.
- codegen/lib.rs: 4 substitutions @malloc -> @GC_malloc.
- ail/main.rs: .arg("-lgc") in the clang invocation.
- 5 IR snapshot files: mechanical s/@malloc/@GC_malloc/, 9
occurrences. IR is bit-identical to pre-14f modulo this
substitution — exactly Decision 9's promise.
- e2e.rs: new test gc_handles_recursive_list_construction.
- examples/gc_stress.{ailx,ail.json}: new fixture, builds a 50-
element list via recursive Cons, sums it (1275).
Hash invariance verified: every existing fixture def hash
unchanged (codegen and link line are downstream of canonical
bytes; AST didn't move).
Tests 79 -> 80, all green. Existing 79 byte-identical stdout.
gc_stress -> 1275. list_map_poly -> 2/3/4 unchanged. sort
sorted-list unchanged. cargo doc 0 warnings.
GC notes (pertinent to future work):
- GC_INIT() not needed on Arch libgc 1.5.6 (auto-init via
__attribute__((constructor))).
- No conservative-scan over-retention observed.
- -lgc alone sufficient for link (pthread/dl transitive).
Pattern-shape note from gc_stress fixture writing: the post-14d
"if-then-else" replacement is `(match (app == n 0) (case
(pat-lit true) ...) (case (pat-wild) ...))`. Three lines for
what `if` used to do in one, but uniform with the language.
Worth flagging for the stdlib brief.
Language is feature-complete enough for stdlib. The three
blockers identified at the 14b boundary (redundancy 14d, tail
calls 14e, GC 14f) are all done. Plan 15a: first stdlib module
std_list.ailx with length/append/reverse/map/filter/fold_left/
fold_right/head/tail/is_empty.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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99f68e89fa |
Iter 8a: closure-pair ABI for fn-values
Every fn-value is now a `ptr` to a closure pair `{ ptr thunk, ptr env }`,
not a raw fn-pointer. Top-level fns get an auto-generated adapter
`@ail_<m>_<f>_adapter(ptr %_env, params...)` that ignores env and
forwards to the real fn, plus a static closure constant
`@ail_<m>_<f>_clos = { @adapter, null }`. References to a fn as a
value return the closure-pair address.
Indirect calls now GEP the thunk + env slots, load both, and call
`thunk(env, args...)`. Direct calls to statically-known callees stay
on the original fast path (no adapter).
This is the ABI groundwork for Iter 8b lambdas: a captured-env closure
will reuse the same value shape, just with a non-null env produced by
malloc.
Tests: 48 still green. IR snapshots refreshed (every fn now carries an
adapter + static closure pair). Iter 7's hof.ail.json prints 42
unchanged — `apply(inc, 41)` now hands `@ail_hof_inc_clos` to apply,
which unpacks and indirect-calls as designed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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efd209779c |
Translate remaining German content to English
Finishes the project-wide English convention: - CLAUDE.md (the user opted in to translate it too). - examples/hello.ail.json: "Hallo, AILang." -> "Hello, AILang.". - E2E test assertion and IR snapshot for hello regenerated to match. - DESIGN.md "Project language: English" section: the previous CLAUDE.md exception is dropped. After this commit, no German remains in any committed file (grep -P '[äöüÄÖÜß]' is empty across .rs / .md / .json / .ll). Verified: cargo test --workspace passes (44/44). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |
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a20ab93c66 |
Iter 5c: Cross-Module-Codegen
Symbol-Mangling-Schema einheitlich auf @ail_<modul>_<def> umgestellt (auch für Single-Modul-Programme), String-Globals als @.str_<modul>_<idx>. main bleibt LLVM-/C-ABI-Eintrittspunkt und ist ein Trampoline auf @ail_<entry>_main. lower_workspace emittiert eine einzige .ll für den ganzen Workspace, alphabetisch nach Modulname, Cross-Module-Calls über Import-Map aufgelöst. ail build / ail emit-ir laufen jetzt durch den Workspace-Pfad. IR-Snapshots regeneriert, neuer ws_main-Snapshot. E2E-Test workspace_build_runs_imported_fn prüft, dass das Binary die importierte Funktion korrekt aufruft. Schuld #19 (source_filename) durch einheitliches <entry>.ail-Schema geschlossen. |
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74a20055c3 |
Iter 4c: IR-Snapshot-Tests als Codegen-Regressions-Schutz
Vier Snapshots in crates/ail/tests/snapshots/ (sum, max3, hello, list) sichern den erzeugten LLVM-IR. Test-Helper normalisiert target triple und trailing whitespace, sonst byte-für-byte-Vergleich. Update via UPDATE_SNAPSHOTS=1 cargo test ir_snapshot_. Mismatch erzeugt eine .actual-Datei mit dem aktuellen Output für Diff-Inspektion. |