| use crate::spec::LinkSelfContainedDefault; |
| use crate::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, Target, TargetOptions}; |
| |
| pub fn target() -> Target { |
| Target { |
| arch: "nvptx64".into(), |
| data_layout: "e-i64:64-i128:128-v16:16-v32:32-n16:32:64".into(), |
| llvm_target: "nvptx64-nvidia-cuda".into(), |
| metadata: crate::spec::TargetMetadata { |
| description: None, |
| tier: None, |
| host_tools: None, |
| std: None, |
| }, |
| pointer_width: 64, |
| |
| options: TargetOptions { |
| os: "cuda".into(), |
| vendor: "nvidia".into(), |
| linker_flavor: LinkerFlavor::Ptx, |
| // The linker can be installed from `crates.io`. |
| linker: Some("rust-ptx-linker".into()), |
| |
| // With `ptx-linker` approach, it can be later overridden via link flags. |
| cpu: "sm_30".into(), |
| |
| // FIXME: create tests for the atomics. |
| max_atomic_width: Some(64), |
| |
| // Unwinding on CUDA is neither feasible nor useful. |
| panic_strategy: PanicStrategy::Abort, |
| |
| // Needed to use `dylib` and `bin` crate types and the linker. |
| dynamic_linking: true, |
| |
| // Avoid using dylib because it contain metadata not supported |
| // by LLVM NVPTX backend. |
| only_cdylib: true, |
| |
| // Let the `ptx-linker` to handle LLVM lowering into MC / assembly. |
| obj_is_bitcode: true, |
| |
| // Convenient and predicable naming scheme. |
| dll_prefix: "".into(), |
| dll_suffix: ".ptx".into(), |
| exe_suffix: ".ptx".into(), |
| |
| // Disable MergeFunctions LLVM optimisation pass because it can |
| // produce kernel functions that call other kernel functions. |
| // This behavior is not supported by PTX ISA. |
| merge_functions: MergeFunctions::Disabled, |
| |
| // The LLVM backend does not support stack canaries for this target |
| supports_stack_protector: false, |
| |
| // Support using `self-contained` linkers like the llvm-bitcode-linker |
| link_self_contained: LinkSelfContainedDefault::True, |
| |
| ..Default::default() |
| }, |
| } |
| } |