1 //===----- CGCUDARuntime.cpp - Interface to CUDA Runtimes -----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This provides an abstract class for CUDA code generation. Concrete
11 // subclasses of this implement code generation for specific CUDA
14 //===----------------------------------------------------------------------===//
16 #include "CGCUDARuntime.h"
18 #include "CodeGenFunction.h"
19 #include "clang/AST/Decl.h"
20 #include "clang/AST/ExprCXX.h"
22 using namespace clang;
23 using namespace CodeGen;
25 CGCUDARuntime::~CGCUDARuntime() {}
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");
33 CodeGenFunction::ConditionalEvaluation eval(CGF);
34 CGF.EmitBranchOnBoolExpr(E->getConfig(), ContBlock, ConfigOKBlock);
37 CGF.EmitBlock(ConfigOKBlock);
39 const Decl *TargetDecl = 0;
40 if (const ImplicitCastExpr *CE = dyn_cast<ImplicitCastExpr>(E->getCallee())) {
41 if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(CE->getSubExpr())) {
42 TargetDecl = DRE->getDecl();
46 llvm::Value *Callee = CGF.EmitScalarExpr(E->getCallee());
47 CGF.EmitCall(E->getCallee()->getType(), Callee, ReturnValue,
48 E->arg_begin(), E->arg_end(), TargetDecl);
49 CGF.EmitBranch(ContBlock);
51 CGF.EmitBlock(ContBlock);
54 return RValue::get(0);