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NVPTX: Allow PassMode::Direct for ptx kernels for now #117247

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merged 3 commits into from
Oct 27, 2023
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NVPTX: Allow PassMode::Direct for ptx kernels for now #117247

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84c9c4a
NVPTX: Allow PassMode::Direct for ptx kernels for now
kjetilkjeka Oct 26, 2023
4d33876
Documentation and error message improvements related to PassMode::Dir…
kjetilkjeka Oct 26, 2023
bb45c81
Link to correct issue in PassMode::Direct ptx-kernel exception
Oct 27, 2023
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9 changes: 7 additions & 2 deletions compiler/rustc_codegen_llvm/src/abi.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -362,9 +362,14 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
// currently use this mode so we have to allow it -- but we absolutely
// shouldn't let any more targets do that.
// (Also see <https://github.com/rust-lang/rust/issues/115666>.)
//
// The unstable abi `PtxKernel` also uses Direct for now.
// It needs to switch to something else before stabilization can happen.
// (See issue: https://github.com/rust-lang/rust/issues/117271)
assert!(
matches!(&*cx.tcx.sess.target.arch, "wasm32" | "wasm64"),
"`PassMode::Direct` for aggregates only allowed on wasm targets\nProblematic type: {:#?}",
matches!(&*cx.tcx.sess.target.arch, "wasm32" | "wasm64")
|| self.conv == Conv::PtxKernel,
"`PassMode::Direct` for aggregates only allowed on wasm and `extern \"ptx-kernel\"` fns\nProblematic type: {:#?}",
arg.layout,
);
}
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