Define thread local storage conventions #116
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tlively
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Jul 16, 2019
sbc100
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Jul 16, 2019
sunfishcode
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Jul 16, 2019
alexcrichton
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Jul 25, 2019
This commit moves `thread_local!` on WebAssembly targets to using the `#[thread_local]` attribute in LLVM. This was recently implemented upstream and is [in the process of being documented][dox]. This change only takes affect if modules are compiled with `+atomics` which is currently unstable and a pretty esoteric method of compiling wasm artifacts. This "new power" of the wasm toolchain means that the old `wasm-bindgen-threads` feature of the standard library can be removed since it should now be possible to create a fully functioning threaded wasm module without intrusively dealing with libstd symbols or intrinsics. Yay! [dox]: WebAssembly/tool-conventions#116
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