clang  8.0.0svn
CGOpenCLRuntime.h
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1 //===----- CGOpenCLRuntime.h - Interface to OpenCL Runtimes -----*- C++ -*-===//
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 #ifndef LLVM_CLANG_LIB_CODEGEN_CGOPENCLRUNTIME_H
17 #define LLVM_CLANG_LIB_CODEGEN_CGOPENCLRUNTIME_H
18 
19 #include "clang/AST/Type.h"
20 #include "llvm/ADT/DenseMap.h"
21 #include "llvm/IR/Type.h"
22 #include "llvm/IR/Value.h"
23 
24 namespace clang {
25 
26 class BlockExpr;
27 class Expr;
28 class VarDecl;
29 
30 namespace CodeGen {
31 
32 class CodeGenFunction;
33 class CodeGenModule;
34 
36 protected:
40  llvm::PointerType *SamplerTy;
41 
42  /// Structure for enqueued block information.
44  llvm::Function *InvokeFunc; /// Block invoke function.
45  llvm::Function *Kernel; /// Enqueued block kernel.
46  llvm::Value *BlockArg; /// The first argument to enqueued block kernel.
47  };
48  /// Maps block expression to block information.
49  llvm::DenseMap<const Expr *, EnqueuedBlockInfo> EnqueuedBlockMap;
50 
51  virtual llvm::Type *getPipeType(const PipeType *T, StringRef Name,
52  llvm::Type *&PipeTy);
53 
54 public:
55  CGOpenCLRuntime(CodeGenModule &CGM) : CGM(CGM),
56  PipeROTy(nullptr), PipeWOTy(nullptr), SamplerTy(nullptr) {}
57  virtual ~CGOpenCLRuntime();
58 
59  /// Emit the IR required for a work-group-local variable declaration, and add
60  /// an entry to CGF's LocalDeclMap for D. The base class does this using
61  /// CodeGenFunction::EmitStaticVarDecl to emit an internal global for D.
63  const VarDecl &D);
64 
65  virtual llvm::Type *convertOpenCLSpecificType(const Type *T);
66 
67  virtual llvm::Type *getPipeType(const PipeType *T);
68 
69  llvm::PointerType *getSamplerType(const Type *T);
70 
71  // Returns a value which indicates the size in bytes of the pipe
72  // element.
73  virtual llvm::Value *getPipeElemSize(const Expr *PipeArg);
74 
75  // Returns a value which indicates the alignment in bytes of the pipe
76  // element.
77  virtual llvm::Value *getPipeElemAlign(const Expr *PipeArg);
78 
79  /// \return __generic void* type.
80  llvm::PointerType *getGenericVoidPointerType();
81 
82  /// \return enqueued block information for enqueued block.
84  const Expr *E);
85 
86  /// Record invoke function and block literal emitted during normal
87  /// codegen for a block expression. The information is used by
88  /// emitOpenCLEnqueuedBlock to emit wrapper kernel.
89  ///
90  /// \param InvokeF invoke function emitted for the block expression.
91  /// \param Block block literal emitted for the block expression.
92  void recordBlockInfo(const BlockExpr *E, llvm::Function *InvokeF,
93  llvm::Value *Block);
94 
95  /// \return LLVM block invoke function emitted for an expression derived from
96  /// the block expression.
97  llvm::Function *getInvokeFunction(const Expr *E);
98 };
99 
100 }
101 }
102 
103 #endif
C Language Family Type Representation.
The base class of the type hierarchy.
Definition: Type.h:1415
EnqueuedBlockInfo emitOpenCLEnqueuedBlock(CodeGenFunction &CGF, const Expr *E)
llvm::Value * BlockArg
Enqueued block kernel.
virtual llvm::Value * getPipeElemAlign(const Expr *PipeArg)
Represents a variable declaration or definition.
Definition: Decl.h:812
PipeType - OpenCL20.
Definition: Type.h:5883
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
void recordBlockInfo(const BlockExpr *E, llvm::Function *InvokeF, llvm::Value *Block)
Record invoke function and block literal emitted during normal codegen for a block expression...
virtual llvm::Type * getPipeType(const PipeType *T, StringRef Name, llvm::Type *&PipeTy)
llvm::PointerType * getSamplerType(const Type *T)
virtual llvm::Type * convertOpenCLSpecificType(const Type *T)
This represents one expression.
Definition: Expr.h:105
llvm::DenseMap< const Expr *, EnqueuedBlockInfo > EnqueuedBlockMap
Maps block expression to block information.
virtual void EmitWorkGroupLocalVarDecl(CodeGenFunction &CGF, const VarDecl &D)
Emit the IR required for a work-group-local variable declaration, and add an entry to CGF&#39;s LocalDecl...
BlockExpr - Adaptor class for mixing a BlockDecl with expressions.
Definition: Expr.h:4974
virtual llvm::Value * getPipeElemSize(const Expr *PipeArg)
llvm::Function * getInvokeFunction(const Expr *E)
The l-value was considered opaque, so the alignment was determined from a type.
CGOpenCLRuntime(CodeGenModule &CGM)
This class organizes the cross-function state that is used while generating LLVM code.
Dataflow Directional Tag Classes.
Structure for enqueued block information.
llvm::Function * Kernel
Block invoke function.
llvm::PointerType * getGenericVoidPointerType()