1 //===----- CGOpenCLRuntime.h - Interface to OpenCL Runtimes -----*- C++ -*-===//
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 #ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENCLRUNTIME_H
17 #define LLVM_CLANG_LIB_CODEGEN_CGOPENCLRUNTIME_H
19 #include "clang/AST/Expr.h"
20 #include "clang/AST/Type.h"
21 #include "llvm/ADT/DenseMap.h"
22 #include "llvm/IR/Type.h"
23 #include "llvm/IR/Value.h"
33 class CodeGenFunction;
36 class CGOpenCLRuntime {
41 llvm::PointerType *SamplerTy;
43 /// Structure for enqueued block information.
44 struct EnqueuedBlockInfo {
45 llvm::Function *InvokeFunc; /// Block invoke function.
46 llvm::Function *Kernel; /// Enqueued block kernel.
47 llvm::Value *BlockArg; /// The first argument to enqueued block kernel.
49 /// Maps block expression to block information.
50 llvm::DenseMap<const Expr *, EnqueuedBlockInfo> EnqueuedBlockMap;
52 virtual llvm::Type *getPipeType(const PipeType *T, StringRef Name,
56 CGOpenCLRuntime(CodeGenModule &CGM) : CGM(CGM),
57 PipeROTy(nullptr), PipeWOTy(nullptr), SamplerTy(nullptr) {}
58 virtual ~CGOpenCLRuntime();
60 /// Emit the IR required for a work-group-local variable declaration, and add
61 /// an entry to CGF's LocalDeclMap for D. The base class does this using
62 /// CodeGenFunction::EmitStaticVarDecl to emit an internal global for D.
63 virtual void EmitWorkGroupLocalVarDecl(CodeGenFunction &CGF,
66 virtual llvm::Type *convertOpenCLSpecificType(const Type *T);
68 virtual llvm::Type *getPipeType(const PipeType *T);
70 llvm::PointerType *getSamplerType(const Type *T);
72 // Returns a value which indicates the size in bytes of the pipe
74 virtual llvm::Value *getPipeElemSize(const Expr *PipeArg);
76 // Returns a value which indicates the alignment in bytes of the pipe
78 virtual llvm::Value *getPipeElemAlign(const Expr *PipeArg);
80 /// \return __generic void* type.
81 llvm::PointerType *getGenericVoidPointerType();
83 /// \return enqueued block information for enqueued block.
84 EnqueuedBlockInfo emitOpenCLEnqueuedBlock(CodeGenFunction &CGF,
87 /// Record invoke function and block literal emitted during normal
88 /// codegen for a block expression. The information is used by
89 /// emitOpenCLEnqueuedBlock to emit wrapper kernel.
91 /// \param InvokeF invoke function emitted for the block expression.
92 /// \param Block block literal emitted for the block expression.
93 void recordBlockInfo(const BlockExpr *E, llvm::Function *InvokeF,