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Disable f16 on LoongArch for LLVM < 21

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The `f16` type works on the LoongArch target starting from LLVM 21.
However, the current minimum supported external LLVM version is 20,
so `f16` must not be enabled on LoongArch for LLVM version < 21.
This commit is contained in:
WANG Rui 2025-12-24 16:04:58 +08:00
parent 5a7ad8ee06
commit 855281c887
1 changed files with 1 additions and 0 deletions
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compiler/rustc_codegen_llvm/src/llvm_util.rs
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@ -383,6 +383,7 @@ fn update_target_reliable_float_cfg(sess: &Session, cfg: &mut TargetConfig) {
// Infinite recursion <https://github.com/llvm/llvm-project/issues/97981>
(Arch::CSky, _) => false,
(Arch::Hexagon, _) if major < 21 => false, // (fixed in llvm21)
(Arch::LoongArch32 | Arch::LoongArch64, _) if major < 21 => false, // (fixed in llvm21)
(Arch::PowerPC | Arch::PowerPC64, _) => false,
(Arch::Sparc | Arch::Sparc64, _) => false,
(Arch::Wasm32 | Arch::Wasm64, _) => false,