/// <summary>
/// Constructs a new Cuda backend.
/// </summary>
/// <param name="context">The context to use.</param>
/// <param name="capabilities">The supported capabilities.</param>
/// <param name="architecture">The target GPU architecture.</param>
/// <param name="instructionSet">The target GPU instruction set.</param>
/// <param name="nvvmAPI">Optional NVVM API instance.</param>
public PTXBackend(
Context context,
CudaCapabilityContext capabilities,
CudaArchitecture architecture,
CudaInstructionSet instructionSet,
NvvmAPI nvvmAPI)
: base(
context,
capabilities,
BackendType.PTX,
new PTXArgumentMapper(context))
{
Architecture = architecture;
InstructionSet = instructionSet;
NvvmAPI = nvvmAPI;
InitIntrinsicProvider();
InitializeKernelTransformers(builder =>
{
var transformerBuilder = Transformer.CreateBuilder(
TransformerConfiguration.Empty);
transformerBuilder.AddBackendOptimizations <CodePlacement.GroupOperands>(
new PTXAcceleratorSpecializer(
PointerType,
Context.Properties.EnableAssertions,
Context.Properties.EnableIOOperations),
context.Properties.InliningMode,
context.Properties.OptimizationLevel);
if (Context.Properties.GetPTXBackendMode() == PTXBackendMode.Enhanced)
{
// Create an optimized PTX assembler block schedule
transformerBuilder.Add(new PTXBlockScheduling());
transformerBuilder.Add(new DeadCodeElimination());
}
builder.Add(transformerBuilder.ToTransformer());
});
}
/// <summary>
/// Resolves the minimum CUDA driver version for the PTX instruction set
/// </summary>
/// <param name="instructionSet">The PTX instruction set</param>
/// <returns>The minimum driver version</returns>
public static CudaDriverVersion GetMinimumDriverVersion(
CudaInstructionSet instructionSet) =>
InstructionSetLookup.TryGetValue(instructionSet, out var result)
? result
: throw new NotSupportedException(
RuntimeErrorMessages.NotSupportedPTXInstructionSet);