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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 
~CGOpenCLRuntime()25 CGOpenCLRuntime::~CGOpenCLRuntime() {}
26 
EmitWorkGroupLocalVarDecl(CodeGenFunction & CGF,const VarDecl & D)27 void CGOpenCLRuntime::EmitWorkGroupLocalVarDecl(CodeGenFunction &CGF,
28                                                 const VarDecl &D) {
29   return CGF.EmitStaticVarDecl(D, llvm::GlobalValue::InternalLinkage);
30 }
31 
convertOpenCLSpecificType(const Type * T)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 #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
44   case BuiltinType::Id: \
45     return llvm::PointerType::get( \
46         llvm::StructType::create(Ctx, "opencl." #ImgType "_" #Suffix "_t"), \
47         ImgAddrSpc);
48 #include "clang/Basic/OpenCLImageTypes.def"
49   case BuiltinType::OCLSampler:
50     return llvm::IntegerType::get(Ctx, 32);
51   case BuiltinType::OCLEvent:
52     return llvm::PointerType::get(llvm::StructType::create(
53                            Ctx, "opencl.event_t"), 0);
54   case BuiltinType::OCLClkEvent:
55     return llvm::PointerType::get(
56         llvm::StructType::create(Ctx, "opencl.clk_event_t"), 0);
57   case BuiltinType::OCLQueue:
58     return llvm::PointerType::get(
59         llvm::StructType::create(Ctx, "opencl.queue_t"), 0);
60   case BuiltinType::OCLNDRange:
61     return llvm::PointerType::get(
62         llvm::StructType::create(Ctx, "opencl.ndrange_t"), 0);
63   case BuiltinType::OCLReserveID:
64     return llvm::PointerType::get(
65         llvm::StructType::create(Ctx, "opencl.reserve_id_t"), 0);
66   }
67 }
68 
getPipeType()69 llvm::Type *CGOpenCLRuntime::getPipeType() {
70   if (!PipeTy){
71     uint32_t PipeAddrSpc =
72       CGM.getContext().getTargetAddressSpace(LangAS::opencl_global);
73     PipeTy = llvm::PointerType::get(llvm::StructType::create(
74       CGM.getLLVMContext(), "opencl.pipe_t"), PipeAddrSpc);
75   }
76 
77   return PipeTy;
78 }
79