1 //===----- CGCUDARuntime.cpp - Interface to CUDA Runtimes -----------------===//
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 #include "CGCUDARuntime.h"
17 #include "CGCall.h"
18 #include "CodeGenFunction.h"
19 #include "clang/AST/Decl.h"
20 #include "clang/AST/ExprCXX.h"
21 
22 using namespace clang;
23 using namespace CodeGen;
24 
~CGCUDARuntime()25 CGCUDARuntime::~CGCUDARuntime() {}
26 
EmitCUDAKernelCallExpr(CodeGenFunction & CGF,const CUDAKernelCallExpr * E,ReturnValueSlot ReturnValue)27 RValue CGCUDARuntime::EmitCUDAKernelCallExpr(CodeGenFunction &CGF,
28                                              const CUDAKernelCallExpr *E,
29                                              ReturnValueSlot ReturnValue) {
30   llvm::BasicBlock *ConfigOKBlock = CGF.createBasicBlock("kcall.configok");
31   llvm::BasicBlock *ContBlock = CGF.createBasicBlock("kcall.end");
32 
33   CodeGenFunction::ConditionalEvaluation eval(CGF);
34   CGF.EmitBranchOnBoolExpr(E->getConfig(), ContBlock, ConfigOKBlock,
35                            /*TrueCount=*/0);
36 
37   eval.begin(CGF);
38   CGF.EmitBlock(ConfigOKBlock);
39   CGF.EmitSimpleCallExpr(E, ReturnValue);
40   CGF.EmitBranch(ContBlock);
41 
42   CGF.EmitBlock(ContBlock);
43   eval.end(CGF);
44 
45   return RValue::get(nullptr);
46 }
47