LoadStoreOpt.h Source File (original) (raw)

14#ifndef LLVM_CODEGEN_GLOBALISEL_LOADSTOREOPT_H

15#define LLVM_CODEGEN_GLOBALISEL_LOADSTOREOPT_H

27namespace llvm {

40private:

43 std::optional<int64_t> Offset;

45public:

53 void setOffset(std::optional<int64_t> NewOff) { Offset = NewOff; }

55 int64_t getOffset() const { return *Offset; }

56};

74}

76using namespace GISelAddressing;

79public:

80 static char ID;

82private:

98 class StoreMergeCandidate {

99 public:

100

102

103

104

105

106 int64_t CurrentLowestOffset;

108

109

110

111

112

113

114

116

118

119

120 void reset() {

122 PotentialAliases.clear();

123 CurrentLowestOffset = 0;

125 }

126 };

127

128 bool isLegalOrBeforeLegalizer(const LegalityQuery &Query,

129 MachineFunction &MF) const;

130

131

132 bool addStoreToCandidate(GStore &MI, StoreMergeCandidate &C);

133

134

135 bool operationAliasesWithCandidate(MachineInstr &MI, StoreMergeCandidate &C);

136

137

138

139

140 bool mergeStores(SmallVectorImpl<GStore *> &StoresToMerge);

141

142

143

144

145 bool doSingleStoreMerge(SmallVectorImpl<GStore *> &Stores);

146 bool processMergeCandidate(StoreMergeCandidate &C);

147 bool mergeBlockStores(MachineBasicBlock &MBB);

148 bool mergeFunctionStores(MachineFunction &MF);

149

150 bool mergeTruncStore(GStore &StoreMI,

151 SmallPtrSetImpl<GStore *> &DeletedStores);

152 bool mergeTruncStoresBlock(MachineBasicBlock &MBB);

153

154

155

156

157 void initializeStoreMergeTargetInfo(unsigned AddrSpace = 0);

158

159

160

161

162 DenseMap<unsigned, BitVector> LegalStoreSizes;

163 bool IsPreLegalizer = false;

164

165 SmallPtrSet<MachineInstr *, 16> InstsToErase;

166

167public:

168 LoadStoreOpt();

169 LoadStoreOpt(std::function<bool(const MachineFunction &)>);

170

172

176

177 void getAnalysisUsage(AnalysisUsage &AU) const override;

178

180};

181

182}

183

184#endif

unsigned const MachineRegisterInfo * MRI

This file implements the BitVector class.

static GCRegistry::Add< ShadowStackGC > C("shadow-stack", "Very portable GC for uncooperative code generators")

This file declares the MachineIRBuilder class.

Promote Memory to Register

This file defines the SmallPtrSet class.

This file defines the SmallSet class.

This file defines the SmallVector class.

Represent the analysis usage information of a pass.

Helper struct to store a base, index and offset that forms an address.

Definition LoadStoreOpt.h:39

Definition LoadStoreOpt.h:50

void setOffset(std::optional< int64_t > NewOff)

Definition LoadStoreOpt.h:53

Definition LoadStoreOpt.h:49

int64_t getOffset() const

Definition LoadStoreOpt.h:55

Definition LoadStoreOpt.h:48

BaseIndexOffset()=default

bool hasValidOffset() const

Definition LoadStoreOpt.h:54

void setIndex(Register NewIndex)

Definition LoadStoreOpt.h:52

void setBase(Register NewBase)

Definition LoadStoreOpt.h:51

Definition LoadStoreOpt.h:47

static char ID

Definition LoadStoreOpt.h:80

MachineFunctionProperties getRequiredProperties() const override

Definition LoadStoreOpt.h:173

StringRef getPassName() const override

getPassName - Return a nice clean name for a pass.

Definition LoadStoreOpt.h:171

MachineFunctionPass(char &ID)

Properties which a MachineFunction may have at a given point in time.

Helper class to build MachineInstr.

Representation of each machine instruction.

MachineRegisterInfo - Keep track of information for virtual and physical registers,...

Wrapper class representing virtual and physical registers.

This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.

StringRef - Represent a constant reference to a string, i.e.

This class defines information used to lower LLVM code to legal SelectionDAG operators that the targe...

Abstract Attribute helper functions.

Definition LoadStoreOpt.h:37

LLVM_ABI bool aliasIsKnownForLoadStore(const MachineInstr &MI1, const MachineInstr &MI2, bool &IsAlias, MachineRegisterInfo &MRI)

Compute whether or not a memory access at MI1 aliases with an access at MI2.

LLVM_ABI BaseIndexOffset getPointerInfo(Register Ptr, MachineRegisterInfo &MRI)

Returns a BaseIndexOffset which describes the pointer in Ptr.

LLVM_ABI bool instMayAlias(const MachineInstr &MI, const MachineInstr &Other, MachineRegisterInfo &MRI, AliasAnalysis *AA)

Returns true if the instruction MI may alias Other.

This is an optimization pass for GlobalISel generic memory operations.

AAResults AliasAnalysis

Temporary typedef for legacy code that uses a generic AliasAnalysis pointer or reference.

The LegalityQuery object bundles together all the information that's needed to decide whether a given...