llvm::DIEValueList Class Reference

A list of DIE values. More...

#include "llvm/CodeGen/DIE.h"

Inheritance diagram for llvm::DIEValueList:

Classes
class	const_value_iterator
class	value_iterator

Public Types
using	value_range = iterator_range< value_iterator >
using	const_value_range = iterator_range< const_value_iterator >

Public Member Functions
value_iterator	addValue (BumpPtrAllocator &Alloc, const DIEValue &V)
template<class T >
value_iterator	addValue (BumpPtrAllocator &Alloc, dwarf::Attribute Attribute, dwarf::Form Form, T &&Value)
void	takeValues (DIEValueList &Other)
	Take ownership of the nodes in Other, and append them to the back of the list. More...
value_range	values ()
const_value_range	values () const

Detailed Description

A list of DIE values.

This is a singly-linked list, but instead of reversing the order of insertion, we keep a pointer to the back of the list so we can push in order.

There are two main reasons to choose a linked list over a customized vector-like data structure.

1. For teardown efficiency, we want DIEs to be BumpPtrAllocated. Using a linked list here makes this way easier to accomplish.
2. Carrying an extra pointer per DIEValue isn't expensive. 45% of DIEs have 2 or fewer values, and 90% have 5 or fewer. A vector would be over-allocated by 50% on average anyway, the same cost as the linked-list node.

Definition at line 662 of file DIE.h.

Member Typedef Documentation

const_value_range

using llvm::DIEValueList::const_value_range = iterator_range<const_value_iterator>

Definition at line 711 of file DIE.h.

value_range

using llvm::DIEValueList::value_range = iterator_range<value_iterator>

Definition at line 710 of file DIE.h.

Member Function Documentation

addValue() [1/2]

value_iterator llvm::DIEValueList::addValue ( BumpPtrAllocator &  Alloc, const DIEValue &  V  )

inline

Definition at line 713 of file DIE.h.

References List.

Referenced by llvm::DwarfUnit::addAttribute(), and addValue().

addValue() [2/2]

template<class T >

value_iterator llvm::DIEValueList::addValue ( BumpPtrAllocator &  Alloc, dwarf::Attribute  Attribute, dwarf::Form  Form, T &&  Value  )

inline

Definition at line 718 of file DIE.h.

References addValue().

takeValues()

void llvm::DIEValueList::takeValues ( DIEValueList &  Other )

inline

Take ownership of the nodes in Other, and append them to the back of the list.

Definition at line 725 of file DIE.h.

References List, and Other.

values() [1/2]

value_range llvm::DIEValueList::values ( )

inline

Definition at line 727 of file DIE.h.

References List, and llvm::make_range().

Referenced by llvm::DIE::computeOffsetsAndAbbrevs(), llvm::DIELoc::computeSize(), llvm::DIEBlock::computeSize(), llvm::AsmPrinter::emitDwarfDIE(), llvm::DwarfFile::emitUnit(), llvm::DIELoc::emitValue(), llvm::DIEBlock::emitValue(), llvm::DIE::findAttribute(), llvm::DIE::generateAbbrev(), getDIEStringAttr(), llvm::patchStmtList(), llvm::DIE::print(), and printValues().

values() [2/2]

const_value_range llvm::DIEValueList::values ( ) const

inline

Definition at line 730 of file DIE.h.

References List, and llvm::make_range().

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The documentation for this class was generated from the following file:

• include/llvm/CodeGen/DIE.h