1 //===----- CGCUDARuntime.cpp - Interface to CUDA Runtimes -----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This provides an abstract class for CUDA code generation.  Concrete
10 // subclasses of this implement code generation for specific CUDA
11 // runtime libraries.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "CGCUDARuntime.h"
16 #include "CGCall.h"
17 #include "CodeGenFunction.h"
18 #include "clang/AST/Decl.h"
19 #include "clang/AST/ExprCXX.h"
20 
21 using namespace clang;
22 using namespace CodeGen;
23 
24 CGCUDARuntime::~CGCUDARuntime() {}
25 
26 RValue CGCUDARuntime::EmitCUDAKernelCallExpr(CodeGenFunction &CGF,
27                                              const CUDAKernelCallExpr *E,
28                                              ReturnValueSlot ReturnValue) {
29   llvm::BasicBlock *ConfigOKBlock = CGF.createBasicBlock("kcall.configok");
30   llvm::BasicBlock *ContBlock = CGF.createBasicBlock("kcall.end");
31 
32   CodeGenFunction::ConditionalEvaluation eval(CGF);
33   CGF.EmitBranchOnBoolExpr(E->getConfig(), ContBlock, ConfigOKBlock,
34                            /*TrueCount=*/0);
35 
36   eval.begin(CGF);
37   CGF.EmitBlock(ConfigOKBlock);
38   CGF.EmitSimpleCallExpr(E, ReturnValue);
39   CGF.EmitBranch(ContBlock);
40 
41   CGF.EmitBlock(ContBlock);
42   eval.end(CGF);
43 
44   return RValue::get(nullptr);
45 }
46