1 //===----- CGCUDARuntime.h - Interface to CUDA Runtimes ---------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This provides an abstract class for CUDA code generation. Concrete 11 // subclasses of this implement code generation for specific CUDA 12 // runtime libraries. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_CLANG_LIB_CODEGEN_CGCUDARUNTIME_H 17 #define LLVM_CLANG_LIB_CODEGEN_CGCUDARUNTIME_H 18 19 namespace llvm { 20 class Function; 21 } 22 23 namespace clang { 24 25 class CUDAKernelCallExpr; 26 27 namespace CodeGen { 28 29 class CodeGenFunction; 30 class CodeGenModule; 31 class FunctionArgList; 32 class ReturnValueSlot; 33 class RValue; 34 35 class CGCUDARuntime { 36 protected: 37 CodeGenModule &CGM; 38 39 public: 40 CGCUDARuntime(CodeGenModule &CGM) : CGM(CGM) {} 41 virtual ~CGCUDARuntime(); 42 43 virtual RValue EmitCUDAKernelCallExpr(CodeGenFunction &CGF, 44 const CUDAKernelCallExpr *E, 45 ReturnValueSlot ReturnValue); 46 47 /// Emits a kernel launch stub. 48 virtual void emitDeviceStub(CodeGenFunction &CGF, FunctionArgList &Args) = 0; 49 50 /// Constructs and returns a module initialization function or nullptr if it's 51 /// not needed. Must be called after all kernels have been emitted. 52 virtual llvm::Function *makeModuleCtorFunction() = 0; 53 54 /// Returns a module cleanup function or nullptr if it's not needed. 55 /// Must be called after ModuleCtorFunction 56 virtual llvm::Function *makeModuleDtorFunction() = 0; 57 }; 58 59 /// Creates an instance of a CUDA runtime class. 60 CGCUDARuntime *CreateNVCUDARuntime(CodeGenModule &CGM); 61 62 } 63 } 64 65 #endif 66
