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Update DebugInfo interface to use metadata, instead of special named llvm.dbg.... global variables, to encode debugging information in llvm IR. This is mostly a mechanical change that tests metadata support very well.

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This change speeds up llvm-gcc by more then 6% at "-O0 -g" (measured by compiling InstructionCombining.cpp!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79977 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2009-08-25 05:24:07 +00:00
parent 4bda11fbda
commit 2a610c7387
47 changed files with 966 additions and 1933 deletions
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25
lib/Target/PIC16/PIC16DebugInfo.cpp
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@@ -1,3 +1,4 @@
//===-- PIC16DebugInfo.cpp - Implementation for PIC16 Debug Information ======//
//
// The LLVM Compiler Infrastructure
@@ -69,7 +70,7 @@ void PIC16DbgInfo::PopulateDerivedTypeInfo (DIType Ty, unsigned short &TypeNo,
// We also need to encode the the information about the base type of
// pointer in TypeNo.
DIType BaseType = DIDerivedType(Ty.getGV()).getTypeDerivedFrom();
DIType BaseType = DIDerivedType(Ty.getNode()).getTypeDerivedFrom();
PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TagName);
}
@@ -78,7 +79,7 @@ void PIC16DbgInfo::PopulateArrayTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
DICompositeType CTy = DICompositeType(Ty.getGV());
DICompositeType CTy = DICompositeType(Ty.getNode());
DIArray Elements = CTy.getTypeArray();
unsigned short size = 1;
unsigned short Dimension[4]={0,0,0,0};
@@ -87,7 +88,7 @@ void PIC16DbgInfo::PopulateArrayTypeInfo (DIType Ty, unsigned short &TypeNo,
if (Element.getTag() == dwarf::DW_TAG_subrange_type) {
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
TypeNo = TypeNo | PIC16Dbg::DT_ARY;
DISubrange SubRange = DISubrange(Element.getGV());
DISubrange SubRange = DISubrange(Element.getNode());
Dimension[i] = SubRange.getHi() - SubRange.getLo() + 1;
// Each dimension is represented by 2 bytes starting at byte 9.
Aux[8+i*2+0] = Dimension[i];
@@ -110,7 +111,7 @@ void PIC16DbgInfo::PopulateStructOrUnionTypeInfo (DIType Ty,
unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
DICompositeType CTy = DICompositeType(Ty.getGV());
DICompositeType CTy = DICompositeType(Ty.getNode());
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
if (Ty.getTag() == dwarf::DW_TAG_structure_type)
TypeNo = TypeNo | PIC16Dbg::T_STRUCT;
@@ -123,7 +124,7 @@ void PIC16DbgInfo::PopulateStructOrUnionTypeInfo (DIType Ty,
// llvm.dbg.composite* global variable. Since we need to revisit
// PIC16DebugInfo implementation anyways after the MDNodes based
// framework is done, let us continue with the way it is.
std::string UniqueSuffix = "." + Ty.getGV()->getNameStr().substr(18);
std::string UniqueSuffix = "." + Ty.getNode()->getNameStr().substr(18);
TagName += UniqueSuffix;
unsigned short size = CTy.getSizeInBits()/8;
// 7th and 8th byte represent size.
@@ -210,11 +211,10 @@ void PIC16DbgInfo::BeginModule(Module &M) {
DbgFinder.processModule(M);
if (DbgFinder.compile_unit_count() != 0) {
// FIXME : What if more then one CUs are present in a module ?
GlobalVariable *CU = *DbgFinder.compile_unit_begin();
MDNode *CU = *DbgFinder.compile_unit_begin();
EmitDebugDirectives = true;
SwitchToCU(CU);
}
// Emit debug info for decls of composite types.
EmitCompositeTypeDecls(M);
}
@@ -259,7 +259,7 @@ void PIC16DbgInfo::ChangeDebugLoc(const MachineFunction &MF,
if (! EmitDebugDirectives) return;
assert (! DL.isUnknown() && "can't change to invalid debug loc");
GlobalVariable *CU = MF.getDebugLocTuple(DL).CompileUnit;
MDNode *CU = MF.getDebugLocTuple(DL).CompileUnit;
unsigned line = MF.getDebugLocTuple(DL).Line;
SwitchToCU(CU);
@@ -306,8 +306,7 @@ void PIC16DbgInfo::EmitCompositeTypeElements (DICompositeType CTy,
int ElementAux[PIC16Dbg::AuxSize] = { 0 };
std::string TagName = "";
std::string ElementName;
GlobalVariable *GV = Element.getGV();
DIDerivedType DITy(GV);
DIDerivedType DITy(Element.getNode());
DITy.getName(ElementName);
unsigned short ElementSize = DITy.getSizeInBits()/8;
// Get mangleddd name for this structure/union element.
@@ -343,7 +342,7 @@ void PIC16DbgInfo::EmitCompositeTypeDecls(Module &M) {
CTy.getName(Name);
// Get the number after llvm.dbg.composite and make UniqueSuffix from
// it.
std::string DIVar = CTy.getGV()->getNameStr();
std::string DIVar = CTy.getNode()->getNameStr();
std::string UniqueSuffix = "." + DIVar.substr(18);
std::string MangledCTyName = Name + UniqueSuffix;
unsigned short size = CTy.getSizeInBits()/8;
@@ -441,7 +440,7 @@ void PIC16DbgInfo::EmitSymbol(std::string Name, short Class, unsigned short
void PIC16DbgInfo::EmitVarDebugInfo(Module &M) {
DebugInfoFinder DbgFinder;
DbgFinder.processModule(M);
for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
E = DbgFinder.global_variable_end(); I != E; ++I) {
DIGlobalVariable DIGV(*I);
@@ -466,7 +465,7 @@ void PIC16DbgInfo::EmitVarDebugInfo(Module &M) {
/// SwitchToCU - Switch to a new compilation unit.
///
void PIC16DbgInfo::SwitchToCU(GlobalVariable *CU) {
void PIC16DbgInfo::SwitchToCU(MDNode *CU) {
// Get the file path from CU.
DICompileUnit cu(CU);
std::string DirName, FileName;