1 //===----- CGOpenCLRuntime.cpp - Interface to OpenCL 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 OpenCL code generation. Concrete
11 // subclasses of this implement code generation for specific OpenCL
14 //===----------------------------------------------------------------------===//
16 #include "CGOpenCLRuntime.h"
17 #include "CodeGenFunction.h"
18 #include "TargetInfo.h"
19 #include "llvm/IR/DerivedTypes.h"
20 #include "llvm/IR/GlobalValue.h"
23 using namespace clang;
24 using namespace CodeGen;
26 CGOpenCLRuntime::~CGOpenCLRuntime() {}
28 void CGOpenCLRuntime::EmitWorkGroupLocalVarDecl(CodeGenFunction &CGF,
30 return CGF.EmitStaticVarDecl(D, llvm::GlobalValue::InternalLinkage);
33 llvm::Type *CGOpenCLRuntime::convertOpenCLSpecificType(const Type *T) {
34 assert(T->isOpenCLSpecificType() &&
35 "Not an OpenCL specific type!");
37 llvm::LLVMContext& Ctx = CGM.getLLVMContext();
38 uint32_t ImgAddrSpc = CGM.getContext().getTargetAddressSpace(
39 CGM.getTarget().getOpenCLImageAddrSpace());
40 switch (cast<BuiltinType>(T)->getKind()) {
42 llvm_unreachable("Unexpected opencl builtin type!");
44 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
45 case BuiltinType::Id: \
46 return llvm::PointerType::get( \
47 llvm::StructType::create(Ctx, "opencl." #ImgType "_" #Suffix "_t"), \
49 #include "clang/Basic/OpenCLImageTypes.def"
50 case BuiltinType::OCLSampler:
51 return getSamplerType();
52 case BuiltinType::OCLEvent:
53 return llvm::PointerType::get(llvm::StructType::create(
54 Ctx, "opencl.event_t"), 0);
55 case BuiltinType::OCLClkEvent:
56 return llvm::PointerType::get(
57 llvm::StructType::create(Ctx, "opencl.clk_event_t"), 0);
58 case BuiltinType::OCLQueue:
59 return llvm::PointerType::get(
60 llvm::StructType::create(Ctx, "opencl.queue_t"), 0);
61 case BuiltinType::OCLReserveID:
62 return llvm::PointerType::get(
63 llvm::StructType::create(Ctx, "opencl.reserve_id_t"), 0);
67 llvm::Type *CGOpenCLRuntime::getPipeType() {
69 uint32_t PipeAddrSpc =
70 CGM.getContext().getTargetAddressSpace(LangAS::opencl_global);
71 PipeTy = llvm::PointerType::get(llvm::StructType::create(
72 CGM.getLLVMContext(), "opencl.pipe_t"), PipeAddrSpc);
78 llvm::PointerType *CGOpenCLRuntime::getSamplerType() {
80 SamplerTy = llvm::PointerType::get(llvm::StructType::create(
81 CGM.getLLVMContext(), "opencl.sampler_t"),
82 CGM.getContext().getTargetAddressSpace(
83 LangAS::opencl_constant));
87 llvm::Value *CGOpenCLRuntime::getPipeElemSize(const Expr *PipeArg) {
88 const PipeType *PipeTy = PipeArg->getType()->getAs<PipeType>();
89 // The type of the last (implicit) argument to be passed.
90 llvm::Type *Int32Ty = llvm::IntegerType::getInt32Ty(CGM.getLLVMContext());
91 unsigned TypeSize = CGM.getContext()
92 .getTypeSizeInChars(PipeTy->getElementType())
94 return llvm::ConstantInt::get(Int32Ty, TypeSize, false);
97 llvm::Value *CGOpenCLRuntime::getPipeElemAlign(const Expr *PipeArg) {
98 const PipeType *PipeTy = PipeArg->getType()->getAs<PipeType>();
99 // The type of the last (implicit) argument to be passed.
100 llvm::Type *Int32Ty = llvm::IntegerType::getInt32Ty(CGM.getLLVMContext());
101 unsigned TypeSize = CGM.getContext()
102 .getTypeAlignInChars(PipeTy->getElementType())
104 return llvm::ConstantInt::get(Int32Ty, TypeSize, false);