compiler/rustc_target/src/spec/nvptx64_nvidia_cuda.rs

   1 use crate::spec::abi::Abi;
   2 use crate::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, Target, TargetOptions};
   3
   4 pub fn target() -> Target {
   5     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(),
   9         pointer_width: 64,
  10
  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()),
  17
  18             // With `ptx-linker` approach, it can be later overridden via link flags.
  19             cpu: "sm_30".to_string(),
  20
  21             // FIXME: create tests for the atomics.
  22             max_atomic_width: Some(64),
  23
  24             // Unwinding on CUDA is neither feasible nor useful.
  25             panic_strategy: PanicStrategy::Abort,
  26
  27             // Needed to use `dylib` and `bin` crate types and the linker.
  28             dynamic_linking: true,
  29             executables: true,
  30
  31             // Avoid using dylib because it contain metadata not supported
  32             // by LLVM NVPTX backend.
  33             only_cdylib: true,
  34
  35             // Let the `ptx-linker` to handle LLVM lowering into MC / assembly.
  36             obj_is_bitcode: true,
  37
  38             // Convenient and predicable naming scheme.
  39             dll_prefix: "".to_string(),
  40             dll_suffix: ".ptx".to_string(),
  41             exe_suffix: ".ptx".to_string(),
  42
  43             // Disable MergeFunctions LLVM optimisation pass because it can
  44             // produce kernel functions that call other kernel functions.
  45             // This behavior is not supported by PTX ISA.
  46             merge_functions: MergeFunctions::Disabled,
  47
  48             // FIXME: enable compilation tests for the target and
  49             // create the tests for this.
  50             unsupported_abis: vec![
  51                 Abi::Cdecl,
  52                 Abi::Stdcall,
  53                 Abi::Fastcall,
  54                 Abi::Vectorcall,
  55                 Abi::Thiscall,
  56                 Abi::Aapcs,
  57                 Abi::Win64,
  58                 Abi::SysV64,
  59                 Abi::Msp430Interrupt,
  60                 Abi::X86Interrupt,
  61                 Abi::AmdGpuKernel,
  62             ],
  63
  64             ..Default::default()
  65         },
  66     }
  67 }