DwarfCFIException.cpp Source File (original) (raw)

25using namespace llvm;

31void DwarfCFIException::addPersonality(const GlobalValue *Personality) {

33 Personalities.push_back(Personality);

34}

40 if ( Asm ->MAI->usesCFIForEH())

41 return;

48 return;

51 for (const GlobalValue *Personality : Personalities) {

52 MCSymbol *Sym = Asm->getSymbol(Personality);

54 Asm->MMI);

55 }

56 Personalities.clear();

57}

60 shouldEmitPersonality = shouldEmitLSDA = false;

67 bool shouldEmitMoves =

73 if (F.hasPersonalityFn())

77 forceEmitPersonality =

79 F.hasPersonalityFn() &&

83 F.needsUnwindTableEntry();

85 shouldEmitPersonality =

86 (forceEmitPersonality ||

88 Per;

91 shouldEmitLSDA = shouldEmitPersonality &&

96 shouldEmitCFI =

97 MAI.usesCFIForEH() && (shouldEmitPersonality || shouldEmitMoves);

98 else

99 shouldEmitCFI = Asm->usesCFIWithoutEH() && shouldEmitMoves;

100}

101

103 if (!shouldEmitCFI)

104 return;

105

106 if (!hasEmittedCFISections) {

108

109

110

112 Asm->TM.Options.ForceDwarfFrameSection ||

113 Asm->TM.Options.MCOptions.EmitSFrameUnwind)

114 Asm->OutStreamer->emitCFISections(

116 Asm->TM.Options.MCOptions.EmitSFrameUnwind);

117 hasEmittedCFISections = true;

118 }

119

120 Asm->OutStreamer->emitCFIStartProc(false);

121

122

123 if (!shouldEmitPersonality)

124 return;

125

126 auto &F = MBB.getParent()->getFunction();

128 assert(P && "Expected personality function");

129

130 addPersonality(P);

131

135 Asm->OutStreamer->emitCFIPersonality(Sym, PerEncoding);

136

137

138 if (shouldEmitLSDA)

139 Asm->OutStreamer->emitCFILsda(Asm->getMBBExceptionSym(MBB),

141}

142

144 if (shouldEmitCFI)

145 Asm->OutStreamer->emitCFIEndProc();

146}

147

148

149

151 if (!shouldEmitPersonality)

152 return;

153

155}

assert(UImm &&(UImm !=~static_cast< T >(0)) &&"Invalid immediate!")

static GCRegistry::Add< ErlangGC > A("erlang", "erlang-compatible garbage collector")

This file contains constants used for implementing Dwarf debug support.

This class is intended to be used as a driving class for all asm writers.

@ None

Do not emit either .eh_frame or .debug_frame.

@ Debug

Emit .debug_frame.

void endBasicBlockSection(const MachineBasicBlock &MBB) override

Process the end of a basic-block-section within a function.

Definition DwarfCFIException.cpp:143

~DwarfCFIException() override

void beginBasicBlockSection(const MachineBasicBlock &MBB) override

Process the beginning of a new basic-block-section within a function.

Definition DwarfCFIException.cpp:102

void endFunction(const MachineFunction *) override

Gather and emit post-function exception information.

Definition DwarfCFIException.cpp:150

void endModule() override

Emit all exception information that should come after the content.

Definition DwarfCFIException.cpp:38

DwarfCFIException(AsmPrinter *A)

Definition DwarfCFIException.cpp:27

void beginFunction(const MachineFunction *MF) override

Gather pre-function exception information.

Definition DwarfCFIException.cpp:59

AsmPrinter * Asm

Target of directive emission.

MCSymbol * emitExceptionTable()

Emit landing pads and actions.

MachineModuleInfo * MMI

Collected machine module information.

EHStreamer(AsmPrinter *A)

This class is intended to be used as a base class for asm properties and features specific to the tar...

bool usesCFIForEH() const

Returns true if the exception handling method for the platform uses call frame information to unwind.

ExceptionHandling getExceptionHandlingType() const

const MCAsmInfo * getAsmInfo() const

MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...

MCContext & getContext() const

Function & getFunction()

Return the LLVM function that this machine code represents.

const std::vector< LandingPadInfo > & getLandingPads() const

Return a reference to the landing pad info for the current function.

unsigned getLSDAEncoding() const

virtual MCSymbol * getCFIPersonalitySymbol(const GlobalValue *GV, const TargetMachine &TM, MachineModuleInfo *MMI) const

unsigned getPersonalityEncoding() const

virtual void emitPersonalityValue(MCStreamer &Streamer, const DataLayout &TM, const MCSymbol *Sym, const MachineModuleInfo *MMI) const

This is an optimization pass for GlobalISel generic memory operations.

decltype(auto) dyn_cast(const From &Val)

dyn_cast - Return the argument parameter cast to the specified type.

@ None

No exception support.

bool isNoOpWithoutInvoke(EHPersonality Pers)

Return true if this personality may be safely removed if there are no invoke instructions remaining i...

LLVM_ABI EHPersonality classifyEHPersonality(const Value *Pers)

See if the given exception handling personality function is one that we understand.

bool is_contained(R &&Range, const E &Element)

Returns true if Element is found in Range.