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Bit pack DIE structures better.

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16 bits are sufficient to store attributes, tags and forms.

llvm-svn: 148799
This commit is contained in:
Benjamin Kramer 2012-01-24 12:08:28 +00:00
parent 15458de186
commit 06164017c0
1 changed files with 23 additions and 23 deletions
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46
lib/CodeGen/AsmPrinter/DIE.h
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@ -31,17 +31,17 @@ namespace llvm {
class DIEAbbrevData {
/// Attribute - Dwarf attribute code.
///
unsigned Attribute;
uint16_t Attribute;
/// Form - Dwarf form code.
///
unsigned Form;
uint16_t Form;
public:
DIEAbbrevData(unsigned A, unsigned F) : Attribute(A), Form(F) {}
DIEAbbrevData(uint16_t A, uint16_t F) : Attribute(A), Form(F) {}
// Accessors.
unsigned getAttribute() const { return Attribute; }
unsigned getForm() const { return Form; }
uint16_t getAttribute() const { return Attribute; }
uint16_t getForm() const { return Form; }
/// Profile - Used to gather unique data for the abbreviation folding set.
///
@ -54,41 +54,41 @@ namespace llvm {
class DIEAbbrev : public FoldingSetNode {
/// Tag - Dwarf tag code.
///
unsigned Tag;
uint16_t Tag;
/// ChildrenFlag - Dwarf children flag.
///
uint16_t ChildrenFlag;
/// Unique number for node.
///
unsigned Number;
/// ChildrenFlag - Dwarf children flag.
///
unsigned ChildrenFlag;
/// Data - Raw data bytes for abbreviation.
///
SmallVector<DIEAbbrevData, 8> Data;
public:
DIEAbbrev(unsigned T, unsigned C) : Tag(T), ChildrenFlag(C), Data() {}
DIEAbbrev(uint16_t T, uint16_t C) : Tag(T), ChildrenFlag(C), Data() {}
// Accessors.
unsigned getTag() const { return Tag; }
uint16_t getTag() const { return Tag; }
unsigned getNumber() const { return Number; }
unsigned getChildrenFlag() const { return ChildrenFlag; }
uint16_t getChildrenFlag() const { return ChildrenFlag; }
const SmallVector<DIEAbbrevData, 8> &getData() const { return Data; }
void setTag(unsigned T) { Tag = T; }
void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; }
void setTag(uint16_t T) { Tag = T; }
void setChildrenFlag(uint16_t CF) { ChildrenFlag = CF; }
void setNumber(unsigned N) { Number = N; }
/// AddAttribute - Adds another set of attribute information to the
/// abbreviation.
void AddAttribute(unsigned Attribute, unsigned Form) {
void AddAttribute(uint16_t Attribute, uint16_t Form) {
Data.push_back(DIEAbbrevData(Attribute, Form));
}
/// AddFirstAttribute - Adds a set of attribute information to the front
/// of the abbreviation.
void AddFirstAttribute(unsigned Attribute, unsigned Form) {
void AddFirstAttribute(uint16_t Attribute, uint16_t Form) {
Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form));
}
@ -113,10 +113,6 @@ namespace llvm {
class DIE {
protected:
/// Abbrev - Buffer for constructing abbreviation.
///
DIEAbbrev Abbrev;
/// Offset - Offset in debug info section.
///
unsigned Offset;
@ -125,6 +121,10 @@ namespace llvm {
///
unsigned Size;
/// Abbrev - Buffer for constructing abbreviation.
///
DIEAbbrev Abbrev;
/// Children DIEs.
///
std::vector<DIE *> Children;
@ -139,8 +139,8 @@ namespace llvm {
mutable unsigned IndentCount;
public:
explicit DIE(unsigned Tag)
: Abbrev(Tag, dwarf::DW_CHILDREN_no), Offset(0),
Size(0), Parent(0), IndentCount(0) {}
: Offset(0), Size(0), Abbrev(Tag, dwarf::DW_CHILDREN_no), Parent(0),
IndentCount(0) {}
virtual ~DIE();
// Accessors.