Add a script to automatically update Rust/Clang versions
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@ -89,6 +89,28 @@ rustc -Clinker-plugin-lto="/path/to/LLVMgold.so" -L. -Copt-level=2 ./main.rs
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## Toolchain Compatibility
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## Toolchain Compatibility
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<!-- NOTE: to update the below table, you can use this shell script:
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```sh
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rustup toolchain install --profile minimal nightly
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MINOR_VERSION=$(rustc +nightly --version | cut -d . -f 2)
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LOWER_BOUND=44
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llvm_version() {
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toolchain="$1"
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printf "Rust $toolchain | Clang "
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rustc +"$toolchain" -Vv | grep LLVM | cut -d ':' -f 2 | tr -d ' '
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}
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for version in `seq $LOWER_BOUND $((MINOR_VERSION - 2))`; do
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toolchain=1.$version.0
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rustup toolchain install --no-self-update --profile minimal $toolchain >/dev/null 2>&1
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llvm_version $toolchain
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done
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```
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-->
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In order for this kind of LTO to work, the LLVM linker plugin must be able to
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In order for this kind of LTO to work, the LLVM linker plugin must be able to
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handle the LLVM bitcode produced by both `rustc` and `clang`.
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handle the LLVM bitcode produced by both `rustc` and `clang`.
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