winch: drc barriers - #14081

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macovedj wants to merge 9 commits into

bytecodealliance:mainfrom

macovedj:winch-drc-barriers

Commits on Aug 5, 2026

winch: gc barrier predicate; un-gate DRC for development
macovedj
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fde76b8
winch: straight-line DRC write barrier in global.set
macovedj
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5a78fd5
winch: null guard around the write barrier increment
macovedj
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e90a8ab
winch: null guard around the write barrier decrement
macovedj
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bb4020a
winch: drop the old value when its refcount reaches zero
macovedj
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ab03d14
winch: observe the write barrier dropping the last reference
macovedj
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e5e8721
environ: expose DRC header constants without the gc-drc feature
macovedj
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c6d3d95
winch: DRC read barrier and write-barrier bounds checks
macovedj
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a2770fe
winch: complete DRC global barrier coverage
macovedj
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ee3a463