22af40413d
Stream A (atomics) foundation. Net-new atomic load/store codegen path, wired end-to-end except LLVM emission, which deliberately bails loudly so the example locks to a clean diagnostic (A.0b turns it green — cadence: no commit both adds a test and makes it pass). - library/modules/std/atomic.sx: Ordering enum, Atomic($T) transparent wrapper (init/load/store, seq_cst-only for now), atomic_load/atomic_store #builtin intrinsics. Opt-in import, NOT in the universal std facade (Ordering in the prelude grows every program's type table + churns 37 .ir snapshots). - IR: atomic_load/atomic_store ops + AtomicOrdering (all 5) + structs (inst.zig); print arms; comptime_vm arms reuse load/store (single-thread correct); recognizer tryLowerAtomicIntrinsic (const-ordering + scalar-size guards, both loud); emit dispatch -> emitAtomicLoad/Store bail via comptime_failed. - examples/1700-atomics-load-store.sx locked to the bail diagnostic. Full ordering surface (a.load(.acquire)) blocked on comptime-constant ordering propagation (comptime enum value params) — A.0.5, migrated not legacy.
18 lines
552 B
Plaintext
18 lines
552 B
Plaintext
// Atomic($T) load/store (seq_cst), single-thread.
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// Stream A (atomics) A.0 — the first net-new atomic codegen example.
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// Explicit orderings (a.load(.acquire)) arrive in A.0.5; see PLAN-ATOMICS.md.
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// Atomics is an opt-in import (not in the universal prelude) — like `trace`.
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#import "modules/std.sx";
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#import "modules/std/atomic.sx";
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main :: () {
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a := Atomic(i64).init(7);
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print("init: {}\n", a.load());
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a.store(42);
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print("after store: {}\n", a.load());
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a.store(a.load() + 1);
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print("incremented: {}\n", a.load());
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}
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