1 //===----- CGOpenCLRuntime.cpp - Interface to OpenCL 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 OpenCL code generation.  Concrete
11 // subclasses of this implement code generation for specific OpenCL
12 // runtime libraries.
13 //
14 //===----------------------------------------------------------------------===//
15 
16 #include "CGOpenCLRuntime.h"
17 #include "CodeGenFunction.h"
18 #include "llvm/IR/DerivedTypes.h"
19 #include "llvm/IR/GlobalValue.h"
20 #include <assert.h>
21 
22 using namespace clang;
23 using namespace CodeGen;
24 
25 CGOpenCLRuntime::~CGOpenCLRuntime() {}
26 
27 void CGOpenCLRuntime::EmitWorkGroupLocalVarDecl(CodeGenFunction &CGF,
28                                                 const VarDecl &D) {
29   return CGF.EmitStaticVarDecl(D, llvm::GlobalValue::InternalLinkage);
30 }
31 
32 llvm::Type *CGOpenCLRuntime::convertOpenCLSpecificType(const Type *T) {
33   assert(T->isOpenCLSpecificType() &&
34          "Not an OpenCL specific type!");
35 
36   llvm::LLVMContext& Ctx = CGM.getLLVMContext();
37   uint32_t ImgAddrSpc =
38     CGM.getContext().getTargetAddressSpace(LangAS::opencl_global);
39   switch (cast<BuiltinType>(T)->getKind()) {
40   default:
41     llvm_unreachable("Unexpected opencl builtin type!");
42     return nullptr;
43   case BuiltinType::OCLImage1d:
44     return llvm::PointerType::get(llvm::StructType::create(
45                            Ctx, "opencl.image1d_t"), ImgAddrSpc);
46   case BuiltinType::OCLImage1dArray:
47     return llvm::PointerType::get(llvm::StructType::create(
48                            Ctx, "opencl.image1d_array_t"), ImgAddrSpc);
49   case BuiltinType::OCLImage1dBuffer:
50     return llvm::PointerType::get(llvm::StructType::create(
51                            Ctx, "opencl.image1d_buffer_t"), ImgAddrSpc);
52   case BuiltinType::OCLImage2d:
53     return llvm::PointerType::get(llvm::StructType::create(
54                            Ctx, "opencl.image2d_t"), ImgAddrSpc);
55   case BuiltinType::OCLImage2dArray:
56     return llvm::PointerType::get(llvm::StructType::create(
57                            Ctx, "opencl.image2d_array_t"), ImgAddrSpc);
58   case BuiltinType::OCLImage3d:
59     return llvm::PointerType::get(llvm::StructType::create(
60                            Ctx, "opencl.image3d_t"), ImgAddrSpc);
61   case BuiltinType::OCLSampler:
62     return llvm::IntegerType::get(Ctx, 32);
63   case BuiltinType::OCLEvent:
64     return llvm::PointerType::get(llvm::StructType::create(
65                            Ctx, "opencl.event_t"), 0);
66   }
67 }
68