1 use crate::spec::abi::Abi;
2 use crate::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, Target, TargetOptions};
4 pub fn target() -> Target {
6 arch: "nvptx64".to_string(),
7 data_layout: "e-i64:64-i128:128-v16:16-v32:32-n16:32:64".to_string(),
8 llvm_target: "nvptx64-nvidia-cuda".to_string(),
11 options: TargetOptions {
12 os: "cuda".to_string(),
13 vendor: "nvidia".to_string(),
14 linker_flavor: LinkerFlavor::PtxLinker,
15 // The linker can be installed from `crates.io`.
16 linker: Some("rust-ptx-linker".to_string()),
19 // With `ptx-linker` approach, it can be later overridden via link flags.
20 cpu: "sm_30".to_string(),
22 // FIXME: create tests for the atomics.
23 max_atomic_width: Some(64),
25 // Unwinding on CUDA is neither feasible nor useful.
26 panic_strategy: PanicStrategy::Abort,
28 // Needed to use `dylib` and `bin` crate types and the linker.
29 dynamic_linking: true,
32 // Avoid using dylib because it contain metadata not supported
33 // by LLVM NVPTX backend.
36 // Let the `ptx-linker` to handle LLVM lowering into MC / assembly.
39 // Convenient and predicable naming scheme.
40 dll_prefix: "".to_string(),
41 dll_suffix: ".ptx".to_string(),
42 exe_suffix: ".ptx".to_string(),
44 // Disable MergeFunctions LLVM optimisation pass because it can
45 // produce kernel functions that call other kernel functions.
46 // This behavior is not supported by PTX ISA.
47 merge_functions: MergeFunctions::Disabled,
49 // FIXME: enable compilation tests for the target and
50 // create the tests for this.
51 unsupported_abis: vec![
53 Abi::Stdcall { unwind: false },
54 Abi::Stdcall { unwind: true },
57 Abi::Thiscall { unwind: false },
58 Abi::Thiscall { unwind: true },