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Documentation and error message improvements related to PassMode::Direct assert

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Co-authored-by: Jubilee <46493976+workingjubilee@users.noreply.github.com>
This commit is contained in:
Kjetil Kjeka 2023-10-27 00:47:52 +02:00 • committed by Kjetil Kjeka
parent 84c9c4aca7
commit 4d33876778
1 changed files with 2 additions and 2 deletions
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4
compiler/rustc_codegen_llvm/src/abi.rs
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@ -363,13 +363,13 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
// shouldn't let any more targets do that.
// (Also see <https://github.com/rust-lang/rust/issues/115666>.)
//
// The unstable api `PtxKernel` also uses Direct for now.
// The unstable abi `PtxKernel` also uses Direct for now.
// It needs to switch to something else before stabilization can happen.
// (Tracking issue abi_ptx: https://github.com/rust-lang/rust/issues/38788)
assert!(
matches!(&*cx.tcx.sess.target.arch, "wasm32" | "wasm64")
|| self.conv == Conv::PtxKernel,
"`PassMode::Direct` for aggregates only allowed on wasm targets\nProblematic type: {:#?}",
"`PassMode::Direct` for aggregates only allowed on wasm and `extern \"ptx-kernel\"` fns\nProblematic type: {:#?}",
arg.layout,
);
}