use crate::spec::{LinkerFlavor, Target, TargetOptions, TargetResult, PanicStrategy, MergeFunctions};
use crate::spec::abi::Abi;
pub fn target() -> TargetResult {
Ok(Target {
arch: "nvptx64".to_string(),
data_layout: "e-i64:64-i128:128-v16:16-v32:32-n16:32:64".to_string(),
llvm_target: "nvptx64-nvidia-cuda".to_string(),
target_os: "cuda".to_string(),
target_vendor: "nvidia".to_string(),
target_env: String::new(),
linker_flavor: LinkerFlavor::PtxLinker,
target_endian: "little".to_string(),
target_pointer_width: "64".to_string(),
target_c_int_width: "32".to_string(),
options: TargetOptions {
// The linker can be installed from `crates.io`.
linker: Some("rust-ptx-linker".to_string()),
// With `ptx-linker` approach, it can be later overriden via link flags.
cpu: "sm_30".to_string(),
// 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,
executables: 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,
// Convinient and predicable naming scheme.
dll_prefix: "".to_string(),
dll_suffix: ".ptx".to_string(),
exe_suffix: ".ptx".to_string(),
// 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,
// FIXME: enable compilation tests for the target and
// create the tests for this.
abi_blacklist: vec![
Abi::Cdecl,
Abi::Stdcall,
Abi::Fastcall,
Abi::Vectorcall,
Abi::Thiscall,
Abi::Aapcs,
Abi::Win64,
Abi::SysV64,
Abi::Msp430Interrupt,
Abi::X86Interrupt,
Abi::AmdGpuKernel,
],
.. Default::default()
},
})
}