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
22using namespace clang;
23using namespace CodeGen;
24
25CGOpenCLRuntime::~CGOpenCLRuntime() {}
26
27void CGOpenCLRuntime::EmitWorkGroupLocalVarDecl(CodeGenFunction &CGF,
28                                                const VarDecl &D) {
29  return CGF.EmitStaticVarDecl(D, llvm::GlobalValue::InternalLinkage);
30}
31
32llvm::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