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atomics A.3b: real swap (xchg) + fence emission + unit test (green)

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emitAtomicRmw xchg arm (swap) and emitAtomicFence (LLVMBuildFence) now real.
examples/1703 (swap old=7/now=42, 'atomicrmw xchg') + 1704 (fence release/acquire/
seq_cst) green. Unit test 'emit: atomic swap (xchg) + fence'. Stream A
(atomics) is feature-complete: load/store, RMW (add/sub/and/or/xor/min/max),
compare_exchange[_weak], swap, fence. Suite green (721/0).
This commit is contained in:
agra
2026-06-20 13:51:36 +03:00
parent fca4304f83
commit b65544a68c
9 changed files with 43 additions and 20 deletions
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examples/expected/1703-atomics-swap.exit
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examples/expected/1703-atomics-swap.stderr
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error: atomic swap (xchg) LLVM emission not yet implemented (Stream A, A.3b)

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examples/expected/1703-atomics-swap.stdout
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swap old: 7
swap now: 42

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examples/expected/1704-atomics-fence.exit
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examples/expected/1704-atomics-fence.stderr
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error: atomic fence LLVM emission not yet implemented (Stream A, A.3b)
error: atomic fence LLVM emission not yet implemented (Stream A, A.3b)
error: atomic fence LLVM emission not yet implemented (Stream A, A.3b)

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examples/expected/1704-atomics-fence.stdout
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after fences: 3