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rustc_target: Add target feature constraints for LoongArch

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Part of https://github.com/rust-lang/rust/issues/116344
This commit is contained in:
WANG Rui 2025-03-17 15:03:33 +08:00
parent c3dd4eefd6
commit 0ee99cf240
1 changed files with 22 additions and 0 deletions
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22
compiler/rustc_target/src/target_features.rs
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@ -923,6 +923,28 @@ impl Target {
_ => unreachable!(),
}
}
"loongarch64" => {
// LoongArch handles ABI in a very sane way, being fully explicit via `llvm_abiname`
// about what the intended ABI is.
match &*self.llvm_abiname {
"ilp32d" | "lp64d" => {
// Requires d (which implies f), incompatible with nothing.
FeatureConstraints { required: &["d"], incompatible: &[] }
}
"ilp32f" | "lp64f" => {
// Requires f, incompatible with nothing.
FeatureConstraints { required: &["f"], incompatible: &[] }
}
"ilp32s" | "lp64s" => {
// The soft-float ABI does not require any features and is also not
// incompatible with any features. Rust targets explicitly specify the
// LLVM ABI names, which allows for enabling hard-float support even on
// soft-float targets, and ensures that the ABI behavior is as expected.
NOTHING
}
_ => unreachable!(),
}
}
_ => NOTHING,
}
}