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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 
     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   switch (cast<BuiltinType>(T)->getKind()) {
     37   default:
     38     llvm_unreachable("Unexpected opencl builtin type!");
     39     return 0;
     40   case BuiltinType::OCLImage1d:
     41     return llvm::PointerType::get(llvm::StructType::create(
     42                            CGM.getLLVMContext(), "opencl.image1d_t"), 0);
     43   case BuiltinType::OCLImage1dArray:
     44     return llvm::PointerType::get(llvm::StructType::create(
     45                            CGM.getLLVMContext(), "opencl.image1d_array_t"), 0);
     46   case BuiltinType::OCLImage1dBuffer:
     47     return llvm::PointerType::get(llvm::StructType::create(
     48                            CGM.getLLVMContext(), "opencl.image1d_buffer_t"), 0);
     49   case BuiltinType::OCLImage2d:
     50     return llvm::PointerType::get(llvm::StructType::create(
     51                            CGM.getLLVMContext(), "opencl.image2d_t"), 0);
     52   case BuiltinType::OCLImage2dArray:
     53     return llvm::PointerType::get(llvm::StructType::create(
     54                            CGM.getLLVMContext(), "opencl.image2d_array_t"), 0);
     55   case BuiltinType::OCLImage3d:
     56     return llvm::PointerType::get(llvm::StructType::create(
     57                            CGM.getLLVMContext(), "opencl.image3d_t"), 0);
     58   case BuiltinType::OCLSampler:
     59     return llvm::IntegerType::get(CGM.getLLVMContext(),32);
     60   case BuiltinType::OCLEvent:
     61     return llvm::PointerType::get(llvm::StructType::create(
     62                            CGM.getLLVMContext(), "opencl.event_t"), 0);
     63   }
     64 }
     65