许杰友 Jieyou Xu (Joe)
46f826cff7
Add `+forced-atomics` feature to esp32s2 no_std target Similar to https://github.com/rust-lang/rust/pull/114499 but for the Xtensa backend. The ESP32-S2 doesn't have native atomic support, but can have atomic load/stores as part of the ISA with this LLVM codegen feature. Note: The current rev of LLVM that rustc is using doesn't contain the `+forced-atomics` feature for Xtensa, but I'm pushing this now to remove the patch from our fork in `esp-rs/rust`. r? ``@Amanieu`` because you reviewed the related RISC-V PR
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