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For dwarf4 use the correct form for referencing debug_loc locations,

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and update test cases accordingly.

This doesn't affect the output dumped using llvm-dwarfdump, but
readelf does now dump the debug_loc section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194898 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2013-11-16 00:18:40 +00:00
parent 7b86771094
commit 87fd14d9b5
4 changed files with 6 additions and 4 deletions
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4
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
View File

@ -1772,7 +1772,9 @@ DIE *CompileUnit::constructVariableDIE(DbgVariable &DV, bool isScopeAbstract) {
unsigned Offset = DV.getDotDebugLocOffset();
if (Offset != ~0U) {
addLabel(VariableDie, dwarf::DW_AT_location, dwarf::DW_FORM_data4,
addLabel(VariableDie, dwarf::DW_AT_location,
DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
: dwarf::DW_FORM_data4,
Asm->GetTempSymbol("debug_loc", Offset));
DV.setDIE(VariableDie);
return VariableDie;

2
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -2118,7 +2118,7 @@ void DwarfDebug::emitDIE(DIE *Die, ArrayRef<DIEAbbrev *> Abbrevs) {
case dwarf::DW_AT_location: {
if (DIELabel *L = dyn_cast<DIELabel>(Values[i])) {
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
Asm->EmitLabelReference(L->getValue(), 4);
Asm->EmitSectionOffset(L->getValue(), DwarfDebugLocSectionSym);
else
Asm->EmitLabelDifference(L->getValue(), DwarfDebugLocSectionSym, 4);
} else {

2
test/DebugInfo/X86/block-capture.ll
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@ -5,7 +5,7 @@
; CHECK: DW_TAG_subprogram [3]
; CHECK: DW_TAG_variable [5]
; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[{{.*}}] = "block")
; CHECK: DW_AT_location [DW_FORM_data4] ({{.*}})
; CHECK: DW_AT_location [DW_FORM_sec_offset] ({{.*}})
%struct.__block_descriptor = type { i64, i64 }
%struct.__block_literal_generic = type { i8*, i32, i32, i8*, %struct.__block_descriptor* }

2
test/DebugInfo/X86/op_deref.ll
View File

@ -4,7 +4,7 @@
; DW-CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000067] = "vla")
; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle
; DW_AT_location lists yet.
; DW-CHECK: DW_AT_location [DW_FORM_data4] (0x00000000)
; DW-CHECK: DW_AT_location [DW_FORM_sec_offset] (0x00000000)
; Unfortunately llvm-dwarfdump can't unparse a list of DW_AT_locations
; right now, so we check the asm output: