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);
88 //===----------------------------------------------------------------------===//
89 /// FunctionResolvingPass - Go over the functions that are in the module and
90 /// look for functions that have the same name. More often than not, there will
93 /// void "foo"(int, int)
94 /// because of the way things are declared in C. If this is the case, patch
97 /// This is an interprocedural pass.
99 ModulePass *createFunctionResolvingPass();
101 //===----------------------------------------------------------------------===//
102 /// createFunctionInliningPass - Return a new pass object that uses a heuristic
103 /// to inline direct function calls to small functions.
105 Pass *createFunctionInliningPass();
107 //===----------------------------------------------------------------------===//
108 /// createPruneEHPass - Return a new pass object which transforms invoke
109 /// instructions into calls, if the callee can _not_ unwind the stack.
111 Pass *createPruneEHPass();
113 //===----------------------------------------------------------------------===//
114 /// createInternalizePass - This pass loops over all of the functions in the
115 /// input module, looking for a main function. If a list of symbols is
116 /// specified with the -internalize-public-api-* command line options, those
117 /// symbols are internalized. Otherwise if InternalizeEverything is set and
118 /// the main function is found, all other globals are marked as internal.
120 ModulePass *createInternalizePass(bool InternalizeEverything);
121 ModulePass *createInternalizePass(const std::vector<const char *> &exportList);
123 //===----------------------------------------------------------------------===//
124 /// createDeadArgEliminationPass - This pass removes arguments from functions
125 /// which are not used by the body of the function.
127 ModulePass *createDeadArgEliminationPass();
129 /// DeadArgHacking pass - Same as DAE, but delete arguments of external
130 /// functions as well. This is definitely not safe, and should only be used by
132 ModulePass *createDeadArgHackingPass();
134 //===----------------------------------------------------------------------===//
135 /// createArgumentPromotionPass - This pass promotes "by reference" arguments to
136 /// be passed by value.
138 Pass *createArgumentPromotionPass();
140 //===----------------------------------------------------------------------===//
141 /// createIPConstantPropagationPass - This pass propagates constants from call
142 /// sites into the bodies of functions.
144 ModulePass *createIPConstantPropagationPass();
146 //===----------------------------------------------------------------------===//
147 /// createIPSCCPPass - This pass propagates constants from call sites into the
148 /// bodies of functions, and keeps track of whether basic blocks are executable
151 ModulePass *createIPSCCPPass();
153 //===----------------------------------------------------------------------===//
155 /// createLoopExtractorPass - This pass extracts all natural loops from the
156 /// program into a function if it can.
158 FunctionPass *createLoopExtractorPass();
160 /// createSingleLoopExtractorPass - This pass extracts one natural loop from the
161 /// program into a function if it can. This is used by bugpoint.
163 FunctionPass *createSingleLoopExtractorPass();
165 // createBlockExtractorPass - This pass extracts all blocks (except those
166 // specified in the argument list) from the functions in the module.
168 ModulePass *createBlockExtractorPass(std::vector<BasicBlock*> &BTNE);
170 // createOptimizeWellKnownCallsPass - This pass optimizes specific calls to
171 // specific well-known (library) functions.
172 ModulePass *createSimplifyLibCallsPass();
175 // createIndMemRemPass - This pass removes potential indirect calls of
177 ModulePass *createIndMemRemPass();
179 } // End llvm namespace