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//===----- CGCUDARuntime.h - Interface to CUDA Runtimes ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This provides an abstract class for CUDA code generation. Concrete
// subclasses of this implement code generation for specific CUDA
// runtime libraries.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_CODEGEN_CGCUDARUNTIME_H
#define LLVM_CLANG_LIB_CODEGEN_CGCUDARUNTIME_H
namespace llvm {
class Function;
class GlobalVariable;
}
namespace clang {
class CUDAKernelCallExpr;
namespace CodeGen {
class CodeGenFunction;
class CodeGenModule;
class FunctionArgList;
class ReturnValueSlot;
class RValue;
class CGCUDARuntime {
protected:
CodeGenModule &CGM;
public:
// Global variable properties that must be passed to CUDA runtime.
enum DeviceVarFlags {
ExternDeviceVar = 0x01, // extern
ConstantDeviceVar = 0x02, // __constant__
};
CGCUDARuntime(CodeGenModule &CGM) : CGM(CGM) {}
virtual ~CGCUDARuntime();
virtual RValue EmitCUDAKernelCallExpr(CodeGenFunction &CGF,
const CUDAKernelCallExpr *E,
ReturnValueSlot ReturnValue);
/// Emits a kernel launch stub.
virtual void emitDeviceStub(CodeGenFunction &CGF, FunctionArgList &Args) = 0;
virtual void registerDeviceVar(llvm::GlobalVariable &Var, unsigned Flags) = 0;
/// Constructs and returns a module initialization function or nullptr if it's
/// not needed. Must be called after all kernels have been emitted.
virtual llvm::Function *makeModuleCtorFunction() = 0;
/// Returns a module cleanup function or nullptr if it's not needed.
/// Must be called after ModuleCtorFunction
virtual llvm::Function *makeModuleDtorFunction() = 0;
};
/// Creates an instance of a CUDA runtime class.
CGCUDARuntime *CreateNVCUDARuntime(CodeGenModule &CGM);
}
}
#endif
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