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[DWARFv5] Emit file 0 to the line table.

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DWARF v5 specifies that the root file (also given in the DW_AT_name
attribute of the compilation unit DIE) should be emitted explicitly to
the line table's list of files.  This makes the line table more
independent of the .debug_info section.

Differential Revision: https://reviews.llvm.org/D44054

llvm-svn: 326758
This commit is contained in:
Paul Robinson 2018-03-06 01:59:56 +00:00
parent 8071a6b009
commit 3913c67af0
20 changed files with 248 additions and 130 deletions
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9
include/llvm/MC/MCContext.h
View File

@ -537,8 +537,13 @@ namespace llvm {
DwarfCompileUnitID = CUIndex;
}
void setMCLineTableCompilationDir(unsigned CUID, StringRef CompilationDir) {
getMCDwarfLineTable(CUID).setCompilationDir(CompilationDir);
/// Specifies the "root" file and directory of the compilation unit.
/// These are "file 0" and "directory 0" in DWARF v5.
void setMCLineTableRootFile(unsigned CUID, StringRef CompilationDir,
StringRef Filename, MD5::MD5Result *Checksum,
Optional<StringRef> Source) {
getMCDwarfLineTable(CUID).setRootFile(CompilationDir, Filename, Checksum,
Source);
}
/// Saves the information from the currently parsed dwarf .loc directive

29
include/llvm/MC/MCDwarf.h
View File

@ -214,6 +214,7 @@ struct MCDwarfLineTableHeader {
SmallVector<MCDwarfFile, 3> MCDwarfFiles;
StringMap<unsigned> SourceIdMap;
StringRef CompilationDir;
MCDwarfFile RootFile;
bool HasMD5 = false;
bool HasSource = false;
@ -241,8 +242,17 @@ class MCDwarfDwoLineTable {
MCDwarfLineTableHeader Header;
public:
void setCompilationDir(StringRef CompilationDir) {
Header.CompilationDir = CompilationDir;
void maybeSetRootFile(StringRef Directory, StringRef FileName,
MD5::MD5Result *Checksum, Optional<StringRef> Source) {
if (!Header.RootFile.Name.empty())
return;
Header.CompilationDir = Directory;
Header.RootFile.Name = FileName;
Header.RootFile.DirIndex = 0;
Header.RootFile.Checksum = Checksum;
Header.RootFile.Source = Source;
Header.HasMD5 = (Checksum != nullptr);
Header.HasSource = Source.hasValue();
}
unsigned getFile(StringRef Directory, StringRef FileName,
@ -276,6 +286,17 @@ public:
FileNumber));
}
void setRootFile(StringRef Directory, StringRef FileName,
MD5::MD5Result *Checksum, Optional<StringRef> Source) {
Header.CompilationDir = Directory;
Header.RootFile.Name = FileName;
Header.RootFile.DirIndex = 0;
Header.RootFile.Checksum = Checksum;
Header.RootFile.Source = Source;
Header.HasMD5 = (Checksum != nullptr);
Header.HasSource = Source.hasValue();
}
MCSymbol *getLabel() const {
return Header.Label;
}
@ -284,10 +305,6 @@ public:
Header.Label = Label;
}
void setCompilationDir(StringRef CompilationDir) {
Header.CompilationDir = CompilationDir;
}
const SmallVectorImpl<std::string> &getMCDwarfDirs() const {
return Header.MCDwarfDirs;
}

6
include/llvm/MC/MCStreamer.h
View File

@ -774,6 +774,12 @@ public:
MD5::MD5Result *Checksum = nullptr, Optional<StringRef> Source = None,
unsigned CUID = 0);
/// Specify the "root" file of the compilation, using the ".file 0" extension.
virtual void emitDwarfFile0Directive(StringRef Directory, StringRef Filename,
MD5::MD5Result *Checksum,
Optional<StringRef> Source,
unsigned CUID = 0);
/// \brief This implements the DWARF2 '.loc fileno lineno ...' assembler
/// directive.
virtual void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,

11
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -476,8 +476,9 @@ DwarfDebug::getOrCreateDwarfCompileUnit(const DICompileUnit *DIUnit) {
// explicitly describe the directory of all files, never relying on the
// compilation directory.
if (!Asm->OutStreamer->hasRawTextSupport() || SingleCU)
Asm->OutStreamer->getContext().setMCLineTableCompilationDir(
NewCU.getUniqueID(), CompilationDir);
Asm->OutStreamer->emitDwarfFile0Directive(
CompilationDir, FN, NewCU.getMD5AsBytes(DIUnit->getFile()),
DIUnit->getSource(), NewCU.getUniqueID());
StringRef Producer = DIUnit->getProducer();
StringRef Flags = DIUnit->getFlags();
@ -2110,8 +2111,10 @@ void DwarfDebug::emitDebugStrDWO() {
MCDwarfDwoLineTable *DwarfDebug::getDwoLineTable(const DwarfCompileUnit &CU) {
if (!useSplitDwarf())
return nullptr;
if (SingleCU)
SplitTypeUnitFileTable.setCompilationDir(CU.getCUNode()->getDirectory());
const DICompileUnit *DIUnit = CU.getCUNode();
SplitTypeUnitFileTable.maybeSetRootFile(
DIUnit->getDirectory(), DIUnit->getFilename(),
CU.getMD5AsBytes(DIUnit->getFile()), DIUnit->getSource());
return &SplitTypeUnitFileTable;
}

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

@ -284,7 +284,7 @@ void DwarfUnit::addSectionOffset(DIE &Die, dwarf::Attribute Attribute,
addUInt(Die, Attribute, dwarf::DW_FORM_data4, Integer);
}
MD5::MD5Result *DwarfUnit::getMD5AsBytes(const DIFile *File) {
MD5::MD5Result *DwarfUnit::getMD5AsBytes(const DIFile *File) const {
assert(File);
Optional<DIFile::ChecksumInfo<StringRef>> Checksum = File->getChecksum();
if (!Checksum || Checksum->Kind != DIFile::CSK_MD5)

8
lib/CodeGen/AsmPrinter/DwarfUnit.h
View File

@ -306,6 +306,10 @@ public:
const MCSymbol *Label,
const MCSymbol *Sec);
/// If the \p File has an MD5 checksum, return it as an MD5Result
/// allocated in the MCContext.
MD5::MD5Result *getMD5AsBytes(const DIFile *File) const;
protected:
~DwarfUnit();
@ -316,10 +320,6 @@ protected:
/// create a new ID and insert it in the line table.
virtual unsigned getOrCreateSourceID(const DIFile *File) = 0;
/// If the \p File has an MD5 checksum, return it as an MD5Result
/// allocated in the MCContext.
MD5::MD5Result *getMD5AsBytes(const DIFile *File);
/// Look in the DwarfDebug map for the MDNode that corresponds to the
/// reference.
template <typename T> T *resolve(TypedDINodeRef<T> Ref) const {

86
lib/MC/MCAsmStreamer.cpp
View File

@ -218,6 +218,10 @@ public:
MD5::MD5Result *Checksum = 0,
Optional<StringRef> Source = None,
unsigned CUID = 0) override;
void emitDwarfFile0Directive(StringRef Directory, StringRef Filename,
MD5::MD5Result *Checksum,
Optional<StringRef> Source,
unsigned CUID = 0) override;
void EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
unsigned Isa, unsigned Discriminator,
@ -1076,21 +1080,10 @@ void MCAsmStreamer::EmitFileDirective(StringRef Filename) {
EmitEOL();
}
Expected<unsigned> MCAsmStreamer::tryEmitDwarfFileDirective(
unsigned FileNo, StringRef Directory, StringRef Filename,
MD5::MD5Result *Checksum, Optional<StringRef> Source, unsigned CUID) {
assert(CUID == 0);
MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
unsigned NumFiles = Table.getMCDwarfFiles().size();
Expected<unsigned> FileNoOrErr =
Table.tryGetFile(Directory, Filename, Checksum, Source, FileNo);
if (!FileNoOrErr)
return FileNoOrErr.takeError();
FileNo = FileNoOrErr.get();
if (NumFiles == Table.getMCDwarfFiles().size())
return FileNo;
void printDwarfFileDirective(unsigned FileNo, StringRef Directory,
StringRef Filename, MD5::MD5Result *Checksum,
Optional<StringRef> Source, bool UseDwarfDirectory,
raw_svector_ostream &OS) {
SmallString<128> FullPathName;
if (!UseDwarfDirectory && !Directory.empty()) {
@ -1104,31 +1097,68 @@ Expected<unsigned> MCAsmStreamer::tryEmitDwarfFileDirective(
}
}
SmallString<128> Str;
raw_svector_ostream OS1(Str);
OS1 << "\t.file\t" << FileNo << ' ';
OS << "\t.file\t" << FileNo << ' ';
if (!Directory.empty()) {
PrintQuotedString(Directory, OS1);
OS1 << ' ';
PrintQuotedString(Directory, OS);
OS << ' ';
}
PrintQuotedString(Filename, OS1);
PrintQuotedString(Filename, OS);
if (Checksum) {
OS1 << " md5 ";
PrintQuotedString(Checksum->digest(), OS1);
OS << " md5 ";
PrintQuotedString(Checksum->digest(), OS);
}
if (Source) {
OS1 << " source ";
PrintQuotedString(*Source, OS1);
OS << " source ";
PrintQuotedString(*Source, OS);
}
if (MCTargetStreamer *TS = getTargetStreamer()) {
}
Expected<unsigned> MCAsmStreamer::tryEmitDwarfFileDirective(
unsigned FileNo, StringRef Directory, StringRef Filename,
MD5::MD5Result *Checksum, Optional<StringRef> Source, unsigned CUID) {
assert(CUID == 0 && "multiple CUs not supported by MCAsmStreamer");
MCDwarfLineTable &Table = getContext().getMCDwarfLineTable(CUID);
unsigned NumFiles = Table.getMCDwarfFiles().size();
Expected<unsigned> FileNoOrErr =
Table.tryGetFile(Directory, Filename, Checksum, Source, FileNo);
if (!FileNoOrErr)
return FileNoOrErr.takeError();
FileNo = FileNoOrErr.get();
if (NumFiles == Table.getMCDwarfFiles().size())
return FileNo;
SmallString<128> Str;
raw_svector_ostream OS1(Str);
printDwarfFileDirective(FileNo, Directory, Filename, Checksum, Source,
UseDwarfDirectory, OS1);
if (MCTargetStreamer *TS = getTargetStreamer())
TS->emitDwarfFileDirective(OS1.str());
} else {
else
EmitRawText(OS1.str());
}
return FileNo;
}
void MCAsmStreamer::emitDwarfFile0Directive(StringRef Directory,
StringRef Filename,
MD5::MD5Result *Checksum,
Optional<StringRef> Source,
unsigned CUID) {
assert(CUID == 0);
SmallString<128> Str;
raw_svector_ostream OS1(Str);
printDwarfFileDirective(0, Directory, Filename, Checksum, Source,
UseDwarfDirectory, OS1);
if (MCTargetStreamer *TS = getTargetStreamer())
TS->emitDwarfFileDirective(OS1.str());
else
EmitRawText(OS1.str());
}
void MCAsmStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
unsigned Isa,

61
lib/MC/MCDwarf.cpp
View File

@ -346,6 +346,34 @@ void MCDwarfLineTableHeader::emitV2FileDirTables(MCStreamer *MCOS) const {
MCOS->EmitIntValue(0, 1); // Terminate the file list.
}
static void emitOneV5FileEntry(MCStreamer *MCOS, const MCDwarfFile &DwarfFile,
bool HasMD5, bool HasSource,
Optional<MCDwarfLineStr> &LineStr) {
assert(!DwarfFile.Name.empty());
if (LineStr)
LineStr->emitRef(MCOS, DwarfFile.Name);
else {
MCOS->EmitBytes(DwarfFile.Name); // FileName and...
MCOS->EmitBytes(StringRef("\0", 1)); // its null terminator.
}
MCOS->EmitULEB128IntValue(DwarfFile.DirIndex); // Directory number.
if (HasMD5) {
MD5::MD5Result *Cksum = DwarfFile.Checksum;
MCOS->EmitBinaryData(
StringRef(reinterpret_cast<const char *>(Cksum->Bytes.data()),
Cksum->Bytes.size()));
}
if (HasSource) {
if (LineStr)
LineStr->emitRef(MCOS, DwarfFile.Source.getValueOr(StringRef()));
else {
MCOS->EmitBytes(
DwarfFile.Source.getValueOr(StringRef())); // Source and...
MCOS->EmitBytes(StringRef("\0", 1)); // its null terminator.
}
}
}
void MCDwarfLineTableHeader::emitV5FileDirTables(
MCStreamer *MCOS, Optional<MCDwarfLineStr> &LineStr) const {
// The directory format, which is just a list of the directory paths. In a
@ -394,33 +422,12 @@ void MCDwarfLineTableHeader::emitV5FileDirTables(
MCOS->EmitULEB128IntValue(LineStr ? dwarf::DW_FORM_line_strp
: dwarf::DW_FORM_string);
}
// Then the list of file names. These start at 1.
MCOS->EmitULEB128IntValue(MCDwarfFiles.size() - 1);
for (unsigned i = 1; i < MCDwarfFiles.size(); ++i) {
assert(!MCDwarfFiles[i].Name.empty());
if (LineStr)
LineStr->emitRef(MCOS, MCDwarfFiles[i].Name);
else {
MCOS->EmitBytes(MCDwarfFiles[i].Name); // FileName and...
MCOS->EmitBytes(StringRef("\0", 1)); // its null terminator.
}
MCOS->EmitULEB128IntValue(MCDwarfFiles[i].DirIndex); // Directory number.
if (HasMD5) {
MD5::MD5Result *Cksum = MCDwarfFiles[i].Checksum;
MCOS->EmitBinaryData(
StringRef(reinterpret_cast<const char *>(Cksum->Bytes.data()),
Cksum->Bytes.size()));
}
if (HasSource) {
if (LineStr)
LineStr->emitRef(MCOS, MCDwarfFiles[i].Source.getValueOr(StringRef()));
else {
MCOS->EmitBytes(
MCDwarfFiles[i].Source.getValueOr(StringRef())); // Source and...
MCOS->EmitBytes(StringRef("\0", 1)); // its null terminator.
}
}
}
// Then the counted list of files. The root file is file #0, then emit the
// files as provide by .file directives.
MCOS->EmitULEB128IntValue(MCDwarfFiles.size());
emitOneV5FileEntry(MCOS, RootFile, HasMD5, HasSource, LineStr);
for (unsigned i = 1; i < MCDwarfFiles.size(); ++i)
emitOneV5FileEntry(MCOS, MCDwarfFiles[i], HasMD5, HasSource, LineStr);
}
std::pair<MCSymbol *, MCSymbol *>

6
lib/MC/MCParser/AsmParser.cpp
View File

@ -3258,8 +3258,8 @@ bool AsmParser::parseDirectiveFile(SMLoc DirectiveLoc) {
FileNumber = getTok().getIntVal();
Lex();
if (FileNumber < 1)
return TokError("file number less than one");
if (FileNumber < 0)
return TokError("negative file number");
}
std::string Path = getTok().getString();
@ -3338,6 +3338,8 @@ bool AsmParser::parseDirectiveFile(SMLoc DirectiveLoc) {
// we turn off -g option, directly use the existing debug info instead.
if (getContext().getGenDwarfForAssembly())
getContext().setGenDwarfForAssembly(false);
else if (FileNumber == 0)
getStreamer().emitDwarfFile0Directive(Directory, Filename, CKMem, Source);
else {
Expected<unsigned> FileNumOrErr = getStreamer().tryEmitDwarfFileDirective(
FileNumber, Directory, Filename, CKMem, Source);

9
lib/MC/MCStreamer.cpp
View File

@ -199,6 +199,15 @@ MCStreamer::tryEmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
Source, CUID);
}
void MCStreamer::emitDwarfFile0Directive(StringRef Directory,
StringRef Filename,
MD5::MD5Result *Checksum,
Optional<StringRef> Source,
unsigned CUID) {
getContext().setMCLineTableRootFile(CUID, Directory, Filename, Checksum,
Source);
}
void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,
unsigned Column, unsigned Flags,
unsigned Isa,

35
test/CodeGen/Generic/dwarf-md5.ll
View File

@ -8,28 +8,25 @@
; RUN: %llc_dwarf -dwarf-version 4 -filetype=asm -o - %s | FileCheck %s --check-prefix=ASM
; RUN: %llc_dwarf -dwarf-version 5 -filetype=asm -o - %s | FileCheck %s --check-prefix=ASM
; RUN: %llc_dwarf -dwarf-version 4 -filetype=obj -o %t4.o %s
; RUN: llvm-dwarfdump -debug-line %t4.o | FileCheck %s --check-prefix=OBJ-4
; RUN: llvm-dwarfdump -debug-line %t4.o | FileCheck %s --check-prefix=OBJ
; RUN: %llc_dwarf -dwarf-version 5 -filetype=obj -o %t5.o %s
; RUN: llvm-dwarfdump -debug-line %t5.o | FileCheck %s --check-prefix=OBJ-5
; RUN: llvm-dwarfdump -debug-line %t5.o | FileCheck %s --check-prefixes=OBJ,OBJ-5
; FIXME: Need to convey the MD5 for the primary source file.
; ASM: .file 1 ".{{/|\\\\}}t1.h" md5 "11111111111111111111111111111111"
; ASM: .file 2 ".{{/|\\\\}}t2.h" md5 "22222222222222222222222222222222"
; OBJ-4: file_names[ 1]:
; OBJ-4-NEXT: name: "t1.h"
; OBJ-4-NEXT: dir_index: 1
; OBJ-4: file_names[ 2]:
; OBJ-4-NEXT: name: "t2.h"
; OBJ-4-NEXT: dir_index: 1
; ASM: .file 0 "[[COMPDIR:.*]]{{[/\\]}}t.c" md5 "00000000000000000000000000000000"
; ASM: .file 1 "[[COMPDIR]]{{[/\\]}}t1.h" md5 "11111111111111111111111111111111"
; ASM: .file 2 "[[COMPDIR]]{{[/\\]}}t2.h" md5 "22222222222222222222222222222222"
; OBJ-5: file_names[ 0]:
; OBJ-5-NEXT: name: "t1.h"
; OBJ-5-NEXT: dir_index: 1
; OBJ-5-NEXT: name: "t.c"
; OBJ-5-NEXT: dir_index: 0
; OBJ-5-NEXT: md5_checksum: 00000000000000000000000000000000
; OBJ: file_names[ 1]:
; OBJ-NEXT: name: "t1.h"
; OBJ-NEXT: dir_index: 0
; OBJ-5-NEXT: md5_checksum: 11111111111111111111111111111111
; OBJ-5: file_names[ 1]:
; OBJ-5-NEXT: name: "t2.h"
; OBJ-5-NEXT: dir_index: 1
; OBJ: file_names[ 2]:
; OBJ-NEXT: name: "t2.h"
; OBJ-NEXT: dir_index: 0
; OBJ-5-NEXT: md5_checksum: 22222222222222222222222222222222
; ModuleID = 't.c'
@ -50,9 +47,9 @@ source_filename = "t.c"
!5 = !{!0, !6}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "t2", scope: !2, file: !8, line: 1, type: !9, isLocal: false, isDefinition: true)
!8 = !DIFile(filename: "./t2.h", directory: "/home/probinson/projects/scratch", checksumkind: CSK_MD5, checksum: "22222222222222222222222222222222")
!8 = !DIFile(filename: "t2.h", directory: "/home/probinson/projects/scratch", checksumkind: CSK_MD5, checksum: "22222222222222222222222222222222")
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DIFile(filename: "./t1.h", directory: "/home/probinson/projects/scratch", checksumkind: CSK_MD5, checksum: "11111111111111111111111111111111")
!10 = !DIFile(filename: "t1.h", directory: "/home/probinson/projects/scratch", checksumkind: CSK_MD5, checksum: "11111111111111111111111111111111")
!11 = !{i32 2, !"Dwarf Version", i32 4}
!12 = !{i32 2, !"Debug Info Version", i32 3}
!13 = !{i32 1, !"wchar_size", i32 4}

39
test/CodeGen/Generic/dwarf-source.ll
View File

@ -8,30 +8,27 @@
; RUN: %llc_dwarf -dwarf-version 4 -filetype=asm -o - %s | FileCheck %s --check-prefix=ASM
; RUN: %llc_dwarf -dwarf-version 5 -filetype=asm -o - %s | FileCheck %s --check-prefix=ASM
; RUN: %llc_dwarf -dwarf-version 4 -filetype=obj -o %t4.o %s
; RUN: llvm-dwarfdump -debug-line %t4.o | FileCheck %s --check-prefix=OBJ-4
; RUN: llvm-dwarfdump -debug-line %t4.o | FileCheck %s --check-prefixes=OBJ,OBJ-4
; RUN: %llc_dwarf -dwarf-version 5 -filetype=obj -o %t5.o %s
; RUN: llvm-dwarfdump -debug-line %t5.o | FileCheck %s --check-prefix=OBJ-5
; RUN: llvm-dwarfdump -debug-line %t5.o | FileCheck %s --check-prefixes=OBJ,OBJ-5
; FIXME: Need to convey the source for the primary source file.
; ASM: .file 1 ".{{/|\\\\}}t1.h" source "11111111111111111111111111111111"
; ASM: .file 2 ".{{/|\\\\}}t2.h" source "22222222222222222222222222222222"
; OBJ-4: file_names[ 1]:
; OBJ-4-NEXT: name: "t1.h"
; OBJ-4-NEXT: dir_index: 1
; OBJ-4-NOT: 11111111111111111111111111111111
; OBJ-4: file_names[ 2]:
; OBJ-4-NEXT: name: "t2.h"
; OBJ-4-NEXT: dir_index: 1
; OBJ-4-NOT: 22222222222222222222222222222222
; ASM: .file 0 "[[COMPDIR:.*]]{{[/\\]}}t.c" source "00000000000000000000000000000000"
; ASM: .file 1 "[[COMPDIR]]{{[/\\]}}t1.h" source "11111111111111111111111111111111"
; ASM: .file 2 "[[COMPDIR]]{{[/\\]}}t2.h" source "22222222222222222222222222222222"
; OBJ-5: file_names[ 0]:
; OBJ-5-NEXT: name: "t1.h"
; OBJ-5-NEXT: dir_index: 1
; OBJ-5-NEXT: name: "t.c"
; OBJ-5-NEXT: dir_index: 0
; OBJ-5-NEXT: source: "00000000000000000000000000000000"
; OBJ: file_names[ 1]:
; OBJ-NEXT: name: "t1.h"
; OBJ-NEXT: dir_index: 0
; OBJ-4-NOT: 11111111111111111111111111111111
; OBJ-5-NEXT: source: "11111111111111111111111111111111"
; OBJ-5: file_names[ 1]:
; OBJ-5-NEXT: name: "t2.h"
; OBJ-5-NEXT: dir_index: 1
; OBJ: file_names[ 2]:
; OBJ-NEXT: name: "t2.h"
; OBJ-NEXT: dir_index: 0
; OBJ-4-NOT: 22222222222222222222222222222222
; OBJ-5-NEXT: source: "22222222222222222222222222222222"
; ModuleID = 't.c'
@ -52,9 +49,9 @@ source_filename = "t.c"
!5 = !{!0, !6}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "t2", scope: !2, file: !8, line: 1, type: !9, isLocal: false, isDefinition: true)
!8 = !DIFile(filename: "./t2.h", directory: "/test", source: "22222222222222222222222222222222")
!8 = !DIFile(filename: "t2.h", directory: "/test", source: "22222222222222222222222222222222")
!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!10 = !DIFile(filename: "./t1.h", directory: "/test", source: "11111111111111111111111111111111")
!10 = !DIFile(filename: "t1.h", directory: "/test", source: "11111111111111111111111111111111")
!11 = !{i32 2, !"Dwarf Version", i32 4}
!12 = !{i32 2, !"Debug Info Version", i32 3}
!13 = !{i32 1, !"wchar_size", i32 4}

2
test/DebugInfo/X86/dbg-file-name.ll
View File

@ -2,7 +2,7 @@
; Verify that the file name is relative to the directory.
; rdar://problem/8884898
; CHECK: file 1 "simple.c"
; CHECK: file 1 "/Users/manav/one/two" "simple.c"
declare i32 @printf(i8*, ...) nounwind

2
test/DebugInfo/X86/inline-asm-locs.ll
View File

@ -22,7 +22,7 @@
; CHECK: .file 2 "B.asm"
; CHECK: .loc 1 111
; CHECK: .loc 2 222
; CHECK: .file 3 "test.c"
; CHECK: .file 3 "/{{.*}}/test.c"
; CHECK: .loc 3 14 0
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"

4
test/MC/ARM/dwarf-asm-multiple-sections.s
View File

@ -54,9 +54,9 @@ b:
// DWARF-DL: .debug_line contents:
// DWARF-DL: version: [[DWVER]]
// DWARF-DL-5: address_size: 4
// DWARF-DL-5: include_directories[ 0] = ""
// DWARF-DL-5: include_directories[ 0] = "/tmp"
// DWARF-DL: file_names[ [[DWFILE]]]:
// DWARF-DL: name: "<stdin>"
// DWARF-DL: name: "{{(<stdin>|-)}}"
// DWARF-DL: 0x0000000000000000 17 0 1 0 0 is_stmt
// DWARF-DL-NEXT: 0x0000000000000004 17 0 1 0 0 is_stmt end_sequence
// DWARF-DL-NEXT: 0x0000000000000000 21 0 1 0 0 is_stmt

15
test/MC/ELF/debug-file-options.s
View File

@ -1,4 +1,4 @@
// RUN: llvm-mc -triple x86_64-unknown-unknown -dwarf-version 5 -filetype=obj %s -o -| llvm-dwarfdump --debug-line --debug-line-str -v - | FileCheck %s
// RUN: llvm-mc -triple x86_64-unknown-unknown -dwarf-version 5 -filetype=obj %s -o -| llvm-dwarfdump --debug-line --debug-line-str -v - | FileCheck %s -DFILE0NAME=%s
// Test combinations of options to the .file directive.
@ -11,25 +11,32 @@
# CHECK: debug_line[0x00000000]
# CHECK: version: 5
# CHECK: include_directories[ 0] = .debug_line_str[0x[[DIR0:[0-9a-f]+]]] = ""
# CHECK: include_directories[ 0] = .debug_line_str[0x[[DIR0:[0-9a-f]+]]] = "{{.*}}"
# CHECK: include_directories[ 1] = .debug_line_str[0x[[DIR1:[0-9a-f]+]]] = "dir1"
# CHECK: include_directories[ 2] = .debug_line_str[0x[[DIR2:[0-9a-f]+]]] = "dir2"
# CHECK-NOT: include_directories
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE0:[0-9a-f]+]]] = "[[FILE0NAME]]"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: md5_checksum:
# CHECK-NEXT: source: .debug_line_str[0x[[FILE0SRC:[0-9a-f]+]]] = ""
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE1:[0-9a-f]+]]] = "foo"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: md5_checksum: ee87e05688663173cd6043a3a15bba6e
# CHECK-NEXT: source: .debug_line_str[0x[[FILE1SRC:[0-9a-f]+]]] = "void foo() {}"
# CHECK: file_names[ 1]:
# CHECK: file_names[ 2]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE2:[0-9a-f]+]]] = "bar"
# CHECK-NEXT: dir_index: 2
# CHECK-NEXT: md5_checksum: 816225a0c90ca8948b70eb58be4d522f
# CHECK-NEXT: source: .debug_line_str[0x[[FILE2SRC:[0-9a-f]+]]] = "void bar() {}"
# CHECK: .debug_line_str contents:
# CHECK-NEXT: 0x[[DIR0]]: ""
# CHECK-NEXT: 0x[[DIR0]]: "{{.*}}"
# CHECK-NEXT: 0x[[DIR1]]: "dir1"
# CHECK-NEXT: 0x[[DIR2]]: "dir2"
# CHECK-NEXT: 0x[[FILE0]]: "[[FILE0NAME]]"
# CHECK-NEXT: 0x[[FILE0SRC]]: ""
# CHECK-NEXT: 0x[[FILE1]]: "foo"
# CHECK-NEXT: 0x[[FILE1SRC]]: "void foo() {}"
# CHECK-NEXT: 0x[[FILE2]]: "bar"

12
test/MC/ELF/debug-md5.s
View File

@ -1,4 +1,4 @@
// RUN: llvm-mc -triple x86_64-unknown-unknown -dwarf-version 5 -filetype=obj %s -o - | llvm-dwarfdump --debug-line --debug-line-str -v - | FileCheck %s
// RUN: llvm-mc -triple x86_64-unknown-unknown -dwarf-version 5 -fdebug-compilation-dir=/tmp -filetype=obj %s -o - | llvm-dwarfdump --debug-line --debug-line-str -v - | FileCheck %s -DROOTFILE=%s
.file 1 "dir1/foo" md5 "00112233445566778899aabbccddeeff"
.file 2 "dir2" "bar" md5 "ffeeddccbbaa99887766554433221100"
@ -9,22 +9,26 @@
# CHECK: debug_line[0x00000000]
# CHECK: version: 5
# CHECK: include_directories[ 0] = .debug_line_str[0x[[DIR0:[0-9a-f]+]]] = ""
# CHECK: include_directories[ 0] = .debug_line_str[0x[[DIR0:[0-9a-f]+]]] = "/tmp"
# CHECK: include_directories[ 1] = .debug_line_str[0x[[DIR1:[0-9a-f]+]]] = "dir1"
# CHECK: include_directories[ 2] = .debug_line_str[0x[[DIR2:[0-9a-f]+]]] = "dir2"
# CHECK-NOT: include_directories
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE0:[0-9a-f]+]]] = "[[ROOTFILE]]"
# CHECK-NEXT: dir_index: 0
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE1:[0-9a-f]+]]] = "foo"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: md5_checksum: 00112233445566778899aabbccddeeff
# CHECK: file_names[ 1]:
# CHECK: file_names[ 2]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE2:[0-9a-f]+]]] = "bar"
# CHECK-NEXT: dir_index: 2
# CHECK-NEXT: md5_checksum: ffeeddccbbaa99887766554433221100
# CHECK: .debug_line_str contents:
# CHECK-NEXT: 0x[[DIR0]]: ""
# CHECK-NEXT: 0x[[DIR0]]: "/tmp"
# CHECK-NEXT: 0x[[DIR1]]: "dir1"
# CHECK-NEXT: 0x[[DIR2]]: "dir2"
# CHECK-NEXT: 0x[[FILE0]]: "[[ROOTFILE]]"
# CHECK-NEXT: 0x[[FILE1]]: "foo"
# CHECK-NEXT: 0x[[FILE2]]: "bar"

14
test/MC/ELF/debug-source.s
View File

@ -1,4 +1,4 @@
// RUN: llvm-mc -triple x86_64-unknown-unknown -dwarf-version 5 -filetype=obj %s -o -| llvm-dwarfdump --debug-line --debug-line-str -v - | FileCheck %s
// RUN: llvm-mc -triple x86_64-unknown-unknown -dwarf-version 5 -filetype=obj %s -o -| llvm-dwarfdump --debug-line --debug-line-str -v - | FileCheck %s -DFILE0NAME=%s
.file 1 "dir1/foo" source "void foo() {}"
.file 2 "dir2" "bar" source "void bar()\n{\n}"
@ -9,23 +9,29 @@
# CHECK: debug_line[0x00000000]
# CHECK: version: 5
# CHECK: include_directories[ 0] = .debug_line_str[0x[[DIR0:[0-9a-f]+]]] = ""
# CHECK: include_directories[ 0] = .debug_line_str[0x[[DIR0:[0-9a-f]+]]] = "{{.*}}"
# CHECK: include_directories[ 1] = .debug_line_str[0x[[DIR1:[0-9a-f]+]]] = "dir1"
# CHECK: include_directories[ 2] = .debug_line_str[0x[[DIR2:[0-9a-f]+]]] = "dir2"
# CHECK-NOT: include_directories
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE0:[0-9a-f]+]]] = "[[FILE0NAME]]"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: source: .debug_line_str[0x[[FILE0SRC:[0-9a-f]+]]] = ""
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE1:[0-9a-f]+]]] = "foo"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: source: .debug_line_str[0x[[FILE1SRC:[0-9a-f]+]]] = "void foo() {}"
# CHECK: file_names[ 1]:
# CHECK: file_names[ 2]:
# CHECK-NEXT: name: .debug_line_str[0x[[FILE2:[0-9a-f]+]]] = "bar"
# CHECK-NEXT: dir_index: 2
# CHECK-NEXT: source: .debug_line_str[0x[[FILE2SRC:[0-9a-f]+]]] = "void bar()\n{\n}"
# CHECK: .debug_line_str contents:
# CHECK-NEXT: 0x[[DIR0]]: ""
# CHECK-NEXT: 0x[[DIR0]]: "{{.*}}"
# CHECK-NEXT: 0x[[DIR1]]: "dir1"
# CHECK-NEXT: 0x[[DIR2]]: "dir2"
# CHECK-NEXT: 0x[[FILE0]]: "[[FILE0NAME]]"
# CHECK-NEXT: 0x[[FILE0SRC]]: ""
# CHECK-NEXT: 0x[[FILE1]]: "foo"
# CHECK-NEXT: 0x[[FILE1SRC]]: "void foo() {}"
# CHECK-NEXT: 0x[[FILE2]]: "bar"

17
test/MC/ELF/dwarf-file0.s Normal file
View File

@ -0,0 +1,17 @@
# RUN: llvm-mc -dwarf-version 4 %s -filetype=obj -o - | llvm-dwarfdump -debug-line - | FileCheck %s --check-prefixes=CHECK,CHECK-4
# RUN: llvm-mc -dwarf-version 5 %s -filetype=obj -o - | llvm-dwarfdump -debug-line - | FileCheck %s --check-prefixes=CHECK,CHECK-5
.file 0 "root.cpp"
.file 1 "header.h"
.file 2 "root.cpp"
# CHECK-5: include_directories[ 0] = ""
# CHECK-4-NOT: include_directories
# CHECK-4-NOT: file_names[ 0]
# CHECK-5: file_names[ 0]:
# CHECK-5-NEXT: name: "root.cpp"
# CHECK-5-NEXT: dir_index: 0
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: "header.h"
# CHECK-NEXT: dir_index: 0
# CHECK: file_names[ 2]:
# CHECK-NEXT: name: "root.cpp"
# CHECK-NEXT: dir_index: 0

11
tools/llvm-mc/llvm-mc.cpp
View File

@ -524,6 +524,17 @@ int main(int argc, char **argv) {
}
if (!MainFileName.empty())
Ctx.setMainFileName(MainFileName);
if (DwarfVersion >= 5) {
// DWARF v5 needs the root file as well as the compilation directory.
// If we find a '.file 0' directive that will supersede these values.
MD5 Hash;
MD5::MD5Result Cksum;
Hash.update(Buffer->getBuffer());
Hash.final(Cksum);
Ctx.setMCLineTableRootFile(
/*CUID=*/0, Ctx.getCompilationDir(),
!MainFileName.empty() ? MainFileName : InputFilename, &Cksum, None);
}
// Package up features to be passed to target/subtarget
std::string FeaturesStr;