1 //===- llvm/Transforms/IPO.h - Interprocedural Transformations --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This header file defines prototypes for accessor functions that expose passes
11 // in the IPO transformations library.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TRANSFORMS_IPO_H
16 #define LLVM_TRANSFORMS_IPO_H
28 //===----------------------------------------------------------------------===//
30 // These functions removes symbols from functions and modules. If OnlyDebugInfo
31 // is true, only debugging information is removed from the module.
33 ModulePass *createStripSymbolsPass(bool OnlyDebugInfo = false);
35 //===----------------------------------------------------------------------===//
36 /// createLowerSetJmpPass - This function lowers the setjmp/longjmp intrinsics
37 /// to invoke/unwind instructions. This should really be part of the C/C++
38 /// front-end, but it's so much easier to write transformations in LLVM proper.
40 ModulePass* createLowerSetJmpPass();
42 //===----------------------------------------------------------------------===//
43 /// createConstantMergePass - This function returns a new pass that merges
44 /// duplicate global constants together into a single constant that is shared.
45 /// This is useful because some passes (ie TraceValues) insert a lot of string
46 /// constants into the program, regardless of whether or not they duplicate an
49 ModulePass *createConstantMergePass();
52 //===----------------------------------------------------------------------===//
53 /// createGlobalOptimizerPass - This function returns a new pass that optimizes
54 /// non-address taken internal globals.
56 ModulePass *createGlobalOptimizerPass();
59 //===----------------------------------------------------------------------===//
60 /// createRaiseAllocationsPass - Return a new pass that transforms malloc and
61 /// free function calls into malloc and free instructions.
63 ModulePass *createRaiseAllocationsPass();
66 //===----------------------------------------------------------------------===//
67 /// createDeadTypeEliminationPass - Return a new pass that eliminates symbol
68 /// table entries for types that are never used.
70 ModulePass *createDeadTypeEliminationPass();
73 //===----------------------------------------------------------------------===//
74 /// createGlobalDCEPass - This transform is designed to eliminate unreachable
75 /// internal globals (functions or global variables)
77 ModulePass *createGlobalDCEPass();
80 //===----------------------------------------------------------------------===//
81 /// createFunctionExtractionPass - If deleteFn is true, this pass deletes as
82 /// the specified function. Otherwise, it deletes as much of the module as
83 /// possible, except for the function specified.
85 ModulePass *createFunctionExtractionPass(Function *F, bool deleteFn = false,
86 bool relinkCallees = false);
89 //===----------------------------------------------------------------------===//
90 /// FunctionResolvingPass - Go over the functions that are in the module and
91 /// look for functions that have the same name. More often than not, there will
94 /// void "foo"(int, int)
95 /// because of the way things are declared in C. If this is the case, patch
98 /// This is an interprocedural pass.
100 ModulePass *createFunctionResolvingPass();
102 //===----------------------------------------------------------------------===//
103 /// createFunctionInliningPass - Return a new pass object that uses a heuristic
104 /// to inline direct function calls to small functions.
106 Pass *createFunctionInliningPass();
108 //===----------------------------------------------------------------------===//
109 /// createPruneEHPass - Return a new pass object which transforms invoke
110 /// instructions into calls, if the callee can _not_ unwind the stack.
112 Pass *createPruneEHPass();
114 //===----------------------------------------------------------------------===//
115 /// createInternalizePass - This pass loops over all of the functions in the
116 /// input module, looking for a main function. If a list of symbols is
117 /// specified with the -internalize-public-api-* command line options, those
118 /// symbols are internalized. Otherwise if InternalizeEverything is set and
119 /// the main function is found, all other globals are marked as internal.
121 ModulePass *createInternalizePass(bool InternalizeEverything);
122 ModulePass *createInternalizePass(const std::vector<const char *> &exportList);
124 //===----------------------------------------------------------------------===//
125 /// createDeadArgEliminationPass - This pass removes arguments from functions
126 /// which are not used by the body of the function.
128 ModulePass *createDeadArgEliminationPass();
130 /// DeadArgHacking pass - Same as DAE, but delete arguments of external
131 /// functions as well. This is definitely not safe, and should only be used by
133 ModulePass *createDeadArgHackingPass();
135 //===----------------------------------------------------------------------===//
136 /// createArgumentPromotionPass - This pass promotes "by reference" arguments to
137 /// be passed by value.
139 Pass *createArgumentPromotionPass();
141 //===----------------------------------------------------------------------===//
142 /// createIPConstantPropagationPass - This pass propagates constants from call
143 /// sites into the bodies of functions.
145 ModulePass *createIPConstantPropagationPass();
147 //===----------------------------------------------------------------------===//
148 /// createIPSCCPPass - This pass propagates constants from call sites into the
149 /// bodies of functions, and keeps track of whether basic blocks are executable
152 ModulePass *createIPSCCPPass();
154 //===----------------------------------------------------------------------===//
156 /// createLoopExtractorPass - This pass extracts all natural loops from the
157 /// program into a function if it can.
159 FunctionPass *createLoopExtractorPass();
161 /// createSingleLoopExtractorPass - This pass extracts one natural loop from the
162 /// program into a function if it can. This is used by bugpoint.
164 FunctionPass *createSingleLoopExtractorPass();
166 // createBlockExtractorPass - This pass extracts all blocks (except those
167 // specified in the argument list) from the functions in the module.
169 ModulePass *createBlockExtractorPass(std::vector<BasicBlock*> &BTNE);
171 // createOptimizeWellKnownCallsPass - This pass optimizes specific calls to
172 // specific well-known (library) functions.
173 ModulePass *createSimplifyLibCallsPass();
176 // createIndMemRemPass - This pass removes potential indirect calls of
178 ModulePass *createIndMemRemPass();
180 } // End llvm namespace