source: icGREP/icgrep-devel/icgrep/IR_Gen/CBuilder.h @ 5386

Last change on this file since 5386 was 5386, checked in by nmedfort, 2 years ago

Replaced stdin input stream with mmap'ed buffer and aligned each read call to the page size.

File size: 5.5 KB
Line 
1/*
2 *  Copyright (c) 2016 International Characters.
3 *  This software is licensed to the public under the Open Software License 3.0.
4 */
5#ifndef CBUILDER_H
6#define CBUILDER_H
7
8#include <string>
9#include <llvm/IR/IRBuilder.h>
10#include <llvm/IR/Constants.h>
11namespace llvm { class Function; }
12namespace llvm { class IntegerType; }
13namespace llvm { class Module; }
14namespace llvm { class PointerType; }
15namespace llvm { class Type; }
16namespace llvm { class Value; }
17
18class CBuilder : public llvm::IRBuilder<> {
19   
20public:
21
22    CBuilder(llvm::Module * m, const unsigned GeneralRegisterWidthInBits, const bool SupportsIndirectBr, const unsigned CacheLineAlignmentInBytes = 64);
23   
24    virtual ~CBuilder() {}
25
26    llvm::Module * getModule() const {
27        return mMod;
28    }
29   
30    void setModule(llvm::Module * m)  {
31        mMod = m;
32    }
33
34    llvm::Value * CreateMalloc(llvm::Value * size);
35
36    llvm::Value * CreateAlignedMalloc(llvm::Value * size, const unsigned alignment);
37   
38    void CreateFree(llvm::Value * const ptr);
39   
40    void CreateAlignedFree(llvm::Value * const ptr, const bool testForNullAddress = false);
41   
42    llvm::Value * CreateRealloc(llvm::Value * ptr, llvm::Value * size);
43
44    llvm::CallInst * CreateMemZero(llvm::Value * ptr, llvm::Value * size, const unsigned alignment = 1) {
45        return CreateMemSet(ptr, getInt8(0), size, alignment);
46    }
47
48    llvm::AllocaInst * CreateCacheAlignedAlloca(llvm::Type * Ty, llvm::Value * ArraySize = nullptr) {
49        llvm::AllocaInst * instr = CreateAlloca(Ty, ArraySize);
50        instr->setAlignment(getCacheAlignment());
51        return instr;
52    }
53
54    // stdio.h functions
55    //
56    //  Create a call to:  FILE * fopen(const char *filename, const char *mode);
57    llvm::Value * CreateFOpenCall(llvm::Value * filename, llvm::Value * mode);
58    //  Create a call to:  size_t fread(void *ptr, size_t size, size_t nitems, FILE *stream);
59    llvm::Value * CreateFReadCall(llvm::Value * ptr, llvm::Value * size, llvm::Value * nitems, llvm::Value * stream);
60    //  Create a call to:  size_t fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream));
61    llvm::Value * CreateFWriteCall(llvm::Value * ptr, llvm::Value * size, llvm::Value * nitems, llvm::Value * stream);
62    //  Create a call to:  int fclose ( FILE * stream );
63    llvm::Value * CreateFCloseCall(llvm::Value * stream);
64   
65    llvm::Function * GetPrintf();
66
67    //  Create calls to unistd.h functions.
68    //
69    //  Create a call to:  int open(const char *filename, int oflag, ...);
70    llvm::Value * CreateOpenCall(llvm::Value * filename, llvm::Value * oflag, llvm::Value * mode);
71    //  Create a call to:  ssize_t write(int fildes, const void *buf, size_t nbyte);
72    llvm::Value * CreateWriteCall(llvm::Value * fildes, llvm::Value * buf, llvm::Value * nbyte);
73    //  Create a call to:  ssize_t read(int fildes, void *buf, size_t nbyte);
74    llvm::Value * CreateReadCall(llvm::Value * fildes, llvm::Value * buf, llvm::Value * nbyte);
75    //  Create a call to:  int close(int filedes);
76    llvm::Value * CreateCloseCall(llvm::Value * fildes);
77
78
79    llvm::Value * CreateAnonymousMMap(llvm::Value * size);
80
81    llvm::Value * CreateFileSourceMMap(llvm::Value * fd, llvm::Value * size);
82
83    llvm::Value * CreateMRemap(llvm::Value * addr, llvm::Value * oldSize, llvm::Value * newSize, const bool mayMove = true);
84
85    llvm::Value * CreateMUnmap(llvm::Value * addr, llvm::Value * size);
86
87
88
89    //  Posix thread (pthread.h) functions.
90    //
91    //  Create a call to:  int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
92    //                    void *(*start_routine)(void*), void *arg);
93    llvm::Value * CreatePThreadCreateCall(llvm::Value * thread, llvm::Value * attr, llvm::Function * start_routine, llvm::Value * arg);
94   
95    //  Create a call to:  void pthread_exit(void *value_ptr);
96    llvm::Value * CreatePThreadExitCall(llvm::Value * value_ptr);
97   
98    //  Create a call to:  int pthread_join(pthread_t thread, void **value_ptr);
99    llvm::Value * CreatePThreadJoinCall(llvm::Value * thread, llvm::Value * value_ptr);
100   
101    void CallPrintInt(const std::string & name, llvm::Value * const value);
102   
103    inline llvm::IntegerType * getSizeTy() const {
104        return mSizeType;
105    }
106   
107    inline llvm::ConstantInt * getSize(const size_t value) {
108        return llvm::ConstantInt::get(getSizeTy(), value);
109    }
110   
111    llvm::PointerType * getVoidPtrTy() const;
112    llvm::PointerType * getFILEptrTy();
113   
114    inline unsigned getCacheAlignment() const {
115        return mCacheLineAlignment;
116    }
117   
118    virtual llvm::LoadInst* CreateAtomicLoadAcquire(llvm::Value * ptr);
119
120    virtual llvm::StoreInst *  CreateAtomicStoreRelease(llvm::Value * val, llvm::Value * ptr);
121   
122    void CreateAssert(llvm::Value * assertion, llvm::StringRef failureMessage);
123
124    void CreateExit(const int exitCode);
125
126    llvm::BranchInst * CreateLikelyCondBr(llvm::Value * Cond, llvm::BasicBlock * True, llvm::BasicBlock * False, const int probability = 90);
127
128    llvm::BranchInst * CreateUnlikelyCondBr(llvm::Value * Cond, llvm::BasicBlock * True, llvm::BasicBlock * False, const int probability = 90) {
129        return CreateLikelyCondBr(Cond, True, False, 100 - probability);
130    }
131
132    bool supportsIndirectBr() const {
133        return mSupportsIndirectBr;
134    }
135
136    llvm::Value * CreateCeilLog2(llvm::Value * value);
137
138protected:
139    llvm::Module *                  mMod;
140    unsigned                        mCacheLineAlignment;
141    llvm::IntegerType *             mSizeType;
142    llvm::StructType *              mFILEtype;
143    const bool                      mSupportsIndirectBr;
144};
145
146#endif
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