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Split out DW_OP_addr for the split debug info DWARF5 proposal.

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llvm-svn: 172857
This commit is contained in:
Eric Christopher 2013-01-18 22:11:33 +00:00
parent 198832d632
commit 0a652f09e1
3 changed files with 29 additions and 6 deletions
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24
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
View File

@ -190,6 +190,22 @@ void CompileUnit::addLabelAddress(DIE *Die, unsigned Attribute,
}
}
/// addOpAddress - Add a dwarf op address data and value using the
/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
///
void CompileUnit::addOpAddress(DIE *Die, MCSymbol *Sym) {
if (!DD->useSplitDwarf()) {
addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
addLabel(Die, 0, dwarf::DW_FORM_udata, Sym);
} else {
unsigned idx = DU->getAddrPoolIndex(Sym);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
Die->addValue(0, dwarf::DW_FORM_GNU_addr_index, Value);
}
}
/// addDelta - Add a label delta attribute data and value.
///
void CompileUnit::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
@ -1297,9 +1313,7 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
if (isGlobalVariable) {
addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
addLabel(Block, 0, dwarf::DW_FORM_udata,
Asm->Mang->getSymbol(GV.getGlobal()));
addOpAddress(Block, Asm->Mang->getSymbol(GV.getGlobal()));
// Do not create specification DIE if context is either compile unit
// or a subprogram.
if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
@ -1329,9 +1343,7 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
// GV is a merged global.
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
Value *Ptr = CE->getOperand(0);
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
addLabel(Block, 0, dwarf::DW_FORM_udata,
Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
addOpAddress(Block, Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
SmallVector<Value*, 3> Idx(CE->op_begin()+1, CE->op_end());
addUInt(Block, 0, dwarf::DW_FORM_udata,

5
lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
View File

@ -215,6 +215,11 @@ public:
///
void addLabelAddress(DIE *Die, unsigned Attribute, MCSymbol *Label);
/// addOpAddress - Add a dwarf op address data and value using the
/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
///
void addOpAddress(DIE *Die, MCSymbol *Label);
/// addDelta - Add a label delta attribute data and value.
///
void addDelta(DIE *Die, unsigned Attribute, unsigned Form,

6
test/DebugInfo/X86/fission-cu.ll
View File

@ -66,6 +66,12 @@
; CHECK: DW_AT_name [DW_FORM_GNU_str_index] ( indexed (00000004) string = "int")
; CHECK: DW_TAG_variable
; CHECK: DW_AT_name [DW_FORM_GNU_str_index] ( indexed (00000003) string = "a")
; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x0016 => {0x00000016})
; CHECK: DW_AT_external [DW_FORM_flag_present] (true)
; CHECK: DW_AT_decl_file [DW_FORM_data1] (0x01)
; CHECK: DW_AT_decl_line [DW_FORM_data1] (0x01)
; CHECK: DW_AT_location [DW_FORM_block1] (<0x02> fb 01 )
; CHECK: .debug_str.dwo contents:
; CHECK: 0x00000000: "clang version 3.3 (trunk 169021) (llvm/trunk 169020)"