diff options
Diffstat (limited to 'compiler/rustc_ty_utils/src/abi.rs')
| -rw-r--r-- | compiler/rustc_ty_utils/src/abi.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_ty_utils/src/abi.rs b/compiler/rustc_ty_utils/src/abi.rs index 4d0b847533b..a03da41652c 100644 --- a/compiler/rustc_ty_utils/src/abi.rs +++ b/compiler/rustc_ty_utils/src/abi.rs @@ -172,7 +172,10 @@ fn conv_from_spec_abi(tcx: TyCtxt<'_>, abi: SpecAbi) -> Conv { use rustc_target::spec::abi::Abi::*; match tcx.sess.target.adjust_abi(abi) { RustIntrinsic | PlatformIntrinsic | Rust | RustCall => Conv::Rust, - RustCold => Conv::RustCold, + + // This is intentionally not using `Conv::Cold`, as that has to preserve + // even SIMD registers, which is generally not a good trade-off. + RustCold => Conv::PreserveMost, // It's the ABI's job to select this, not ours. System { .. } => bug!("system abi should be selected elsewhere"), |