clang/lib/CodeGen/CGCUDARuntime.cpp

   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/ExprCXX.h"
  19
  20 using namespace clang;
  21 using namespace CodeGen;
  22
  23 CGCUDARuntime::~CGCUDARuntime() {}
  24
  25 RValue CGCUDARuntime::EmitCUDAKernelCallExpr(CodeGenFunction &CGF,
  26                                              const CUDAKernelCallExpr *E,
  27                                              ReturnValueSlot ReturnValue,
  28                                              llvm::CallBase **CallOrInvoke) {
  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, CallOrInvoke);
  39   CGF.EmitBranch(ContBlock);
  40
  41   CGF.EmitBlock(ContBlock);
  42   eval.end(CGF);
  43
  44   return RValue::get(nullptr);
  45 }