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annotate include/llvm/Transforms/Scalar.h @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children e4204d083e25
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1 //===-- Scalar.h - Scalar Transformations -----------------------*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This header file defines prototypes for accessor functions that expose passes
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11 // in the Scalar transformations library.
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12 //
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13 //===----------------------------------------------------------------------===//
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14
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15 #ifndef LLVM_TRANSFORMS_SCALAR_H
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16 #define LLVM_TRANSFORMS_SCALAR_H
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17
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18 #include "llvm/ADT/StringRef.h"
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19
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20 namespace llvm {
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21
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22 class FunctionPass;
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23 class Pass;
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24 class GetElementPtrInst;
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25 class PassInfo;
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26 class TerminatorInst;
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27 class TargetLowering;
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28 class TargetMachine;
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29
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30 //===----------------------------------------------------------------------===//
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31 //
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32 // ConstantPropagation - A worklist driven constant propagation pass
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33 //
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34 FunctionPass *createConstantPropagationPass();
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35
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36 //===----------------------------------------------------------------------===//
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37 //
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38 // SCCP - Sparse conditional constant propagation.
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39 //
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40 FunctionPass *createSCCPPass();
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41
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42 //===----------------------------------------------------------------------===//
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43 //
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44 // DeadInstElimination - This pass quickly removes trivially dead instructions
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45 // without modifying the CFG of the function. It is a BasicBlockPass, so it
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46 // runs efficiently when queued next to other BasicBlockPass's.
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47 //
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48 Pass *createDeadInstEliminationPass();
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49
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50 //===----------------------------------------------------------------------===//
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51 //
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52 // DeadCodeElimination - This pass is more powerful than DeadInstElimination,
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53 // because it is worklist driven that can potentially revisit instructions when
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54 // their other instructions become dead, to eliminate chains of dead
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55 // computations.
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56 //
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57 FunctionPass *createDeadCodeEliminationPass();
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58
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59 //===----------------------------------------------------------------------===//
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60 //
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61 // DeadStoreElimination - This pass deletes stores that are post-dominated by
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62 // must-aliased stores and are not loaded used between the stores.
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63 //
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64 FunctionPass *createDeadStoreEliminationPass();
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65
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66 //===----------------------------------------------------------------------===//
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67 //
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68 // AggressiveDCE - This pass uses the SSA based Aggressive DCE algorithm. This
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69 // algorithm assumes instructions are dead until proven otherwise, which makes
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70 // it more successful are removing non-obviously dead instructions.
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71 //
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72 FunctionPass *createAggressiveDCEPass();
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73
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74 //===----------------------------------------------------------------------===//
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75 //
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76 // SROA - Replace aggregates or pieces of aggregates with scalar SSA values.
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77 //
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78 FunctionPass *createSROAPass(bool RequiresDomTree = true);
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79
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80 //===----------------------------------------------------------------------===//
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81 //
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82 // ScalarReplAggregates - Break up alloca's of aggregates into multiple allocas
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83 // if possible.
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84 //
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85 FunctionPass *createScalarReplAggregatesPass(signed Threshold = -1,
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86 bool UseDomTree = true,
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87 signed StructMemberThreshold = -1,
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88 signed ArrayElementThreshold = -1,
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89 signed ScalarLoadThreshold = -1);
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90
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91 //===----------------------------------------------------------------------===//
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92 //
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93 // InductionVariableSimplify - Transform induction variables in a program to all
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94 // use a single canonical induction variable per loop.
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95 //
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96 Pass *createIndVarSimplifyPass();
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97
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98 //===----------------------------------------------------------------------===//
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99 //
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100 // InstructionCombining - Combine instructions to form fewer, simple
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101 // instructions. This pass does not modify the CFG, and has a tendency to make
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102 // instructions dead, so a subsequent DCE pass is useful.
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103 //
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104 // This pass combines things like:
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105 // %Y = add int 1, %X
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106 // %Z = add int 1, %Y
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107 // into:
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108 // %Z = add int 2, %X
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109 //
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110 FunctionPass *createInstructionCombiningPass();
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111
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112 //===----------------------------------------------------------------------===//
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113 //
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114 // LICM - This pass is a loop invariant code motion and memory promotion pass.
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115 //
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116 Pass *createLICMPass();
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117
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118 //===----------------------------------------------------------------------===//
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119 //
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120 // LoopStrengthReduce - This pass is strength reduces GEP instructions that use
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121 // a loop's canonical induction variable as one of their indices.
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122 //
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123 Pass *createLoopStrengthReducePass();
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124
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125 Pass *createGlobalMergePass(const TargetMachine *TM = 0);
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126
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127 //===----------------------------------------------------------------------===//
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128 //
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129 // LoopUnswitch - This pass is a simple loop unswitching pass.
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130 //
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131 Pass *createLoopUnswitchPass(bool OptimizeForSize = false);
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132
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133 //===----------------------------------------------------------------------===//
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134 //
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parents:
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135 // LoopInstSimplify - This pass simplifies instructions in a loop's body.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 Pass *createLoopInstSimplifyPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 // LoopUnroll - This pass is a simple loop unrolling pass.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 Pass *createLoopUnrollPass(int Threshold = -1, int Count = -1,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 int AllowPartial = -1, int Runtime = -1);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 // LoopReroll - This pass is a simple loop rerolling pass.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 Pass *createLoopRerollPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154 // LoopRotate - This pass is a simple loop rotating pass.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 Pass *createLoopRotatePass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 // LoopIdiom - This pass recognizes and replaces idioms in loops.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 Pass *createLoopIdiomPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166 // PromoteMemoryToRegister - This pass is used to promote memory references to
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 // be register references. A simple example of the transformation performed by
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 // this pass is:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 // FROM CODE TO CODE
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 // %X = alloca i32, i32 1 ret i32 42
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 // store i32 42, i32 *%X
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 // %Y = load i32* %X
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 // ret i32 %Y
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 FunctionPass *createPromoteMemoryToRegisterPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 // DemoteRegisterToMemoryPass - This pass is used to demote registers to memory
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 // references. In basically undoes the PromoteMemoryToRegister pass to make cfg
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 // hacking easier.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 FunctionPass *createDemoteRegisterToMemoryPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 extern char &DemoteRegisterToMemoryID;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 // Reassociate - This pass reassociates commutative expressions in an order that
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 // is designed to promote better constant propagation, GCSE, LICM, PRE...
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 // For example: 4 + (x + 5) -> x + (4 + 5)
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 FunctionPass *createReassociatePass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 // JumpThreading - Thread control through mult-pred/multi-succ blocks where some
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199 // preds always go to some succ.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 FunctionPass *createJumpThreadingPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 // CFGSimplification - Merge basic blocks, eliminate unreachable blocks,
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206 // simplify terminator instructions, etc...
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 FunctionPass *createCFGSimplificationPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 // FlattenCFG - flatten CFG, reduce number of conditional branches by using
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 // parallel-and and parallel-or mode, etc...
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 FunctionPass *createFlattenCFGPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 // CFG Structurization - Remove irreducible control flow
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 Pass *createStructurizeCFGPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 // BreakCriticalEdges - Break all of the critical edges in the CFG by inserting
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 // a dummy basic block. This pass may be "required" by passes that cannot deal
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227 // with critical edges. For this usage, a pass must call:
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 // AU.addRequiredID(BreakCriticalEdgesID);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 // This pass obviously invalidates the CFG, but can update forward dominator
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 // (set, immediate dominators, tree, and frontier) information.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234 FunctionPass *createBreakCriticalEdgesPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 extern char &BreakCriticalEdgesID;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 // LoopSimplify - Insert Pre-header blocks into the CFG for every function in
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 // the module. This pass updates dominator information, loop information, and
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 // does not add critical edges to the CFG.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 // AU.addRequiredID(LoopSimplifyID);
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 Pass *createLoopSimplifyPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246 extern char &LoopSimplifyID;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 // TailCallElimination - This pass eliminates call instructions to the current
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 // function which occur immediately before return instructions.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 FunctionPass *createTailCallEliminationPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
257 // LowerSwitch - This pass converts SwitchInst instructions into a sequence of
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 // chained binary branch instructions.
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 FunctionPass *createLowerSwitchPass();
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261 extern char &LowerSwitchID;
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263 //===----------------------------------------------------------------------===//
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 //
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 // LowerInvoke - This pass converts invoke and unwind instructions to use sjlj
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 // exception handling mechanisms. Note that after this pass runs the CFG is not
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 // entirely accurate (exceptional control flow edges are not correct anymore) so
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 // only very simple things should be done after the lowerinvoke pass has run
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269 // (like generation of native code). This should *NOT* be used as a general
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 // purpose "my LLVM-to-LLVM pass doesn't support the invoke instruction yet"
95c75e76d11b LLVM 3.4
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff changeset
271 // lowering pass.
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272 //
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273 FunctionPass *createLowerInvokePass(const TargetMachine *TM = 0,
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274 bool useExpensiveEHSupport = false);
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275 extern char &LowerInvokePassID;
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276
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277 //===----------------------------------------------------------------------===//
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278 //
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279 // LCSSA - This pass inserts phi nodes at loop boundaries to simplify other loop
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280 // optimizations.
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281 //
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282 Pass *createLCSSAPass();
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283 extern char &LCSSAID;
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284
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285 //===----------------------------------------------------------------------===//
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286 //
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287 // EarlyCSE - This pass performs a simple and fast CSE pass over the dominator
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288 // tree.
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289 //
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290 FunctionPass *createEarlyCSEPass();
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291
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292 //===----------------------------------------------------------------------===//
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293 //
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294 // GVN - This pass performs global value numbering and redundant load
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295 // elimination cotemporaneously.
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296 //
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297 FunctionPass *createGVNPass(bool NoLoads = false);
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298
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299 //===----------------------------------------------------------------------===//
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300 //
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301 // MemCpyOpt - This pass performs optimizations related to eliminating memcpy
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302 // calls and/or combining multiple stores into memset's.
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303 //
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304 FunctionPass *createMemCpyOptPass();
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305
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306 //===----------------------------------------------------------------------===//
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307 //
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308 // LoopDeletion - This pass performs DCE of non-infinite loops that it
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309 // can prove are dead.
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310 //
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311 Pass *createLoopDeletionPass();
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312
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313 //===----------------------------------------------------------------------===//
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314 //
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315 // CodeGenPrepare - This pass prepares a function for instruction selection.
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316 //
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317 FunctionPass *createCodeGenPreparePass(const TargetMachine *TM = 0);
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318
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319 //===----------------------------------------------------------------------===//
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320 //
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321 // InstructionNamer - Give any unnamed non-void instructions "tmp" names.
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322 //
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323 FunctionPass *createInstructionNamerPass();
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324 extern char &InstructionNamerID;
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diff changeset
325
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326 //===----------------------------------------------------------------------===//
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327 //
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328 // Sink - Code Sinking
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329 //
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330 FunctionPass *createSinkingPass();
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331
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332 //===----------------------------------------------------------------------===//
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333 //
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334 // LowerAtomic - Lower atomic intrinsics to non-atomic form
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335 //
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336 Pass *createLowerAtomicPass();
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diff changeset
337
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338 //===----------------------------------------------------------------------===//
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339 //
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340 // ValuePropagation - Propagate CFG-derived value information
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341 //
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342 Pass *createCorrelatedValuePropagationPass();
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343
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344 //===----------------------------------------------------------------------===//
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345 //
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346 // InstructionSimplifier - Remove redundant instructions.
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diff changeset
347 //
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348 FunctionPass *createInstructionSimplifierPass();
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349 extern char &InstructionSimplifierID;
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diff changeset
350
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351
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352 //===----------------------------------------------------------------------===//
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353 //
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354 // LowerExpectIntrinsics - Removes llvm.expect intrinsics and creates
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diff changeset
355 // "block_weights" metadata.
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diff changeset
356 FunctionPass *createLowerExpectIntrinsicPass();
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diff changeset
357
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diff changeset
358
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359 //===----------------------------------------------------------------------===//
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360 //
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361 // PartiallyInlineLibCalls - Tries to inline the fast path of library
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parents:
diff changeset
362 // calls such as sqrt.
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parents:
diff changeset
363 //
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diff changeset
364 FunctionPass *createPartiallyInlineLibCallsPass();
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parents:
diff changeset
365
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diff changeset
366 //===----------------------------------------------------------------------===//
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367 //
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diff changeset
368 // SampleProfilePass - Loads sample profile data from disk and generates
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parents:
diff changeset
369 // IR metadata to reflect the profile.
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parents:
diff changeset
370 FunctionPass *createSampleProfileLoaderPass();
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parents:
diff changeset
371 FunctionPass *createSampleProfileLoaderPass(StringRef Name);
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parents:
diff changeset
372
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373 } // End llvm namespace
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374
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375 #endif