llvm-dwarfdump: Replace -debug-dump=sect option with individual options.

As discussed on llvm-dev in
http://lists.llvm.org/pipermail/llvm-dev/2017-September/117301.html
this changes the command line interface of llvm-dwarfdump to match the
one used by the dwarfdump utility shipping on macOS. In addition to
being shorter to type this format also has the advantage of allowing
more than one section to be specified at the same time.

In a nutshell, with this change

  $ llvm-dwarfdump --debug-dump=info
  $ llvm-dwarfdump --debug-dump=apple-objc

becomes

  $ dwarfdump --debug-info --apple-objc

Differential Revision: https://reviews.llvm.org/D37714

llvm-svn: 312970

llvm/include/llvm/BinaryFormat/Dwarf.def

@@ -20,7 +20,7 @@
       defined HANDLE_DW_LNE || defined HANDLE_DW_LNCT ||                       \
       defined HANDLE_DW_MACRO || defined HANDLE_DW_RLE ||                      \
       defined HANDLE_DW_CFA || defined HANDLE_DW_APPLE_PROPERTY ||             \
-      defined HANDLE_DW_UT)
+      defined HANDLE_DW_UT || defined HANDLE_DWARF_SECTION)
 #error "Missing macro definition of HANDLE_DW*"
 #endif
 
@@ -92,6 +92,10 @@
 #define HANDLE_DW_UT(ID, NAME)
 #endif
 
+#ifndef HANDLE_DWARF_SECTION
+#define HANDLE_DWARF_SECTION(ENUM_NAME, ELF_NAME, CMDLINE_NAME)
+#endif
+
 HANDLE_DW_TAG(0x0000, null, 2, DWARF)
 HANDLE_DW_TAG(0x0001, array_type, 2, DWARF)
 HANDLE_DW_TAG(0x0002, class_type, 2, DWARF)
@@ -819,6 +823,42 @@ HANDLE_DW_UT(0x04, skeleton)
 HANDLE_DW_UT(0x05, split_compile)
 HANDLE_DW_UT(0x06, split_type)
 
+// DWARF section types. (enum name, ELF name, cmdline name)
+// Note that these IDs don't mean anything.
+// TODO: Add Mach-O and COFF names.
+// Official DWARF sections.
+HANDLE_DWARF_SECTION(DebugAbbrev, ".debug_abbrev", "debug-abbrev")
+HANDLE_DWARF_SECTION(DebugAbbrevDwo, ".debug_abbrev.dwo", "debug-abbrev-dwo")
+HANDLE_DWARF_SECTION(DebugAranges, ".debug_aranges", "debug-aranges")
+HANDLE_DWARF_SECTION(DebugInfo, ".debug_info", "debug-info")
+HANDLE_DWARF_SECTION(DebugInfoDwo, ".debug_info.dwo", "debug-info-dwo")
+HANDLE_DWARF_SECTION(DebugTypes, ".debug_types", "debug-types")
+HANDLE_DWARF_SECTION(DebugTypesDwo, ".debug_types.dwo", "debug-types-dwo")
+HANDLE_DWARF_SECTION(DebugLine, ".debug_line", "debug-line")
+HANDLE_DWARF_SECTION(DebugLineDwo, ".debug_line.dwo", "debug-line-dwo")
+HANDLE_DWARF_SECTION(DebugLoc, ".debug_loc", "debug-loc")
+HANDLE_DWARF_SECTION(DebugLocDwo, ".debug_loc.dwo", "debug-loc-dwo")
+HANDLE_DWARF_SECTION(DebugFrames, ".debug_frames", "debug-frames")
+HANDLE_DWARF_SECTION(DebugMacro, ".debug_macro", "debug-macro")
+HANDLE_DWARF_SECTION(DebugRanges, ".debug_ranges", "debug-ranges")
+HANDLE_DWARF_SECTION(DebugPubnames, ".debug_pubnames", "debug-pubnames")
+HANDLE_DWARF_SECTION(DebugPubtypes, ".debug_pubtypes", "debug-pubtypes")
+HANDLE_DWARF_SECTION(DebugGnuPubnames, ".debug_gnu_pubnames", "debug-gnu-pubnames")
+HANDLE_DWARF_SECTION(DebugGnuPubtypes, ".debug_gnu_pubtypes", "debug-gnu-pubtypes")
+HANDLE_DWARF_SECTION(DebugStr, ".debug_str", "debug-str")
+HANDLE_DWARF_SECTION(DebugStrOffsets, ".debug_str_offsets", "debug-str-offsets")
+HANDLE_DWARF_SECTION(DebugStrDwo, ".debug_str.dwo", "debug-str-dwo")
+HANDLE_DWARF_SECTION(DebugStrOffsetsDwo, ".debug_str_offsets.dwo", "debug-str-offsets-dwo")
+HANDLE_DWARF_SECTION(DebugCUIndex, ".debug_cu_index", "debug-cu-index")
+HANDLE_DWARF_SECTION(DebugTUIndex, ".debug_tu_index", "debug-tu-index")
+// Vendor extensions.
+HANDLE_DWARF_SECTION(AppleNames, ".apple_names", "apple-names")
+HANDLE_DWARF_SECTION(AppleTypes, ".apple_types", "apple-types")
+HANDLE_DWARF_SECTION(AppleNamespaces, ".apple_namespaces", "apple-namespaces")
+HANDLE_DWARF_SECTION(AppleObjC, ".apple_objc", "apple-objc")
+HANDLE_DWARF_SECTION(GdbIndex, ".gdb_index", "gdb-index")
+
+
 #undef HANDLE_DW_TAG
 #undef HANDLE_DW_AT
 #undef HANDLE_DW_FORM
@@ -836,3 +876,4 @@ HANDLE_DW_UT(0x06, split_type)
 #undef HANDLE_DW_CFA
 #undef HANDLE_DW_APPLE_PROPERTY
 #undef HANDLE_DW_UT
+#undef HANDLE_DWARF_SECTION

llvm/include/llvm/DebugInfo/DIContext.h

@@ -112,45 +112,31 @@ struct DILineInfoSpecifier {
       : FLIKind(FLIKind), FNKind(FNKind) {}
 };
 
+namespace {
+/// This is just a helper to programmatically construct DIDumpType.
+enum DIDumpTypeCounter {
+  DIDT_ID_Null = 0,
+#define HANDLE_DWARF_SECTION(ENUM_NAME, ELF_NAME, CMDLINE_NAME) \
+  DIDT_ID##ENUM_NAME,
+#include "llvm/BinaryFormat/Dwarf.def"
+#undef HANDLE_DWARF_SECTION
+};
+}
+
 /// Selects which debug sections get dumped.
-enum DIDumpType {
+enum DIDumpType : uint64_t {
   DIDT_Null,
-  DIDT_All,
-  DIDT_Abbrev,
-  DIDT_AbbrevDwo,
-  DIDT_Aranges,
-  DIDT_Frames,
-  DIDT_Info,
-  DIDT_InfoDwo,
-  DIDT_Types,
-  DIDT_TypesDwo,
-  DIDT_Line,
-  DIDT_LineDwo,
-  DIDT_Loc,
-  DIDT_LocDwo,
-  DIDT_Macro,
-  DIDT_Ranges,
-  DIDT_Pubnames,
-  DIDT_Pubtypes,
-  DIDT_GnuPubnames,
-  DIDT_GnuPubtypes,
-  DIDT_Str,
-  DIDT_StrOffsets,
-  DIDT_StrDwo,
-  DIDT_StrOffsetsDwo,
-  DIDT_AppleNames,
-  DIDT_AppleTypes,
-  DIDT_AppleNamespaces,
-  DIDT_AppleObjC,
-  DIDT_CUIndex,
-  DIDT_GdbIndex,
-  DIDT_TUIndex,
+  DIDT_All             = ~0ULL,
+#define HANDLE_DWARF_SECTION(ENUM_NAME, ELF_NAME, CMDLINE_NAME) \
+  DIDT_##ENUM_NAME = 1 << DIDT_ID##ENUM_NAME,
+#include "llvm/BinaryFormat/Dwarf.def"
+#undef HANDLE_DWARF_SECTION
 };
 
 /// Container for dump options that control which debug information will be
 /// dumped.
 struct DIDumpOptions {
-    DIDumpType DumpType = DIDT_All;
+    uint64_t DumpType = DIDT_All;
     bool DumpEH = false;
     bool SummarizeTypes = false;
     bool Brief = false;
@@ -170,7 +156,7 @@ class DIContext {
 
   virtual void dump(raw_ostream &OS, DIDumpOptions DumpOpts) = 0;
 
-  virtual bool verify(raw_ostream &OS, DIDumpType DumpType = DIDT_All) {
+  virtual bool verify(raw_ostream &OS, uint64_t DumpType = DIDT_All) {
     // No verifier? Just say things went well.
     return true;
   }

llvm/include/llvm/DebugInfo/DWARF/DWARFContext.h

@@ -123,7 +123,7 @@ class DWARFContext : public DIContext {
 
   void dump(raw_ostream &OS, DIDumpOptions DumpOpts) override;
 
-  bool verify(raw_ostream &OS, DIDumpType DumpType = DIDT_All) override;
+  bool verify(raw_ostream &OS, uint64_t DumpType = DIDT_All) override;
 
   using cu_iterator_range = DWARFUnitSection<DWARFCompileUnit>::iterator_range;
   using tu_iterator_range = DWARFUnitSection<DWARFTypeUnit>::iterator_range;

llvm/lib/DebugInfo/DWARF/DWARFContext.cpp

@@ -200,60 +200,60 @@ static void dumpStringOffsetsSection(raw_ostream &OS, StringRef SectionName,
 }
 
 void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
-  DIDumpType DumpType = DumpOpts.DumpType;
+  uint64_t DumpType = DumpOpts.DumpType;
   bool DumpEH = DumpOpts.DumpEH;
   bool SummarizeTypes = DumpOpts.SummarizeTypes;
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Abbrev) {
+  if (DumpType & DIDT_DebugAbbrev) {
     OS << ".debug_abbrev contents:\n";
     getDebugAbbrev()->dump(OS);
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo)
+  if (DumpType & DIDT_DebugAbbrevDwo)
     if (const DWARFDebugAbbrev *D = getDebugAbbrevDWO()) {
       OS << "\n.debug_abbrev.dwo contents:\n";
       D->dump(OS);
     }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Info) {
+  if (DumpType & DIDT_DebugInfo) {
     OS << "\n.debug_info contents:\n";
     for (const auto &CU : compile_units())
       CU->dump(OS, DumpOpts);
   }
 
-  if ((DumpType == DIDT_All || DumpType == DIDT_InfoDwo) &&
+  if ((DumpType & DIDT_DebugInfoDwo) &&
       getNumDWOCompileUnits()) {
     OS << "\n.debug_info.dwo contents:\n";
     for (const auto &DWOCU : dwo_compile_units())
       DWOCU->dump(OS, DumpOpts);
   }
 
-  if ((DumpType == DIDT_All || DumpType == DIDT_Types) && getNumTypeUnits()) {
+  if ((DumpType & DIDT_DebugTypes) && getNumTypeUnits()) {
     OS << "\n.debug_types contents:\n";
     for (const auto &TUS : type_unit_sections())
       for (const auto &TU : TUS)
         TU->dump(OS, SummarizeTypes);
   }
 
-  if ((DumpType == DIDT_All || DumpType == DIDT_TypesDwo) &&
+  if ((DumpType & DIDT_DebugTypesDwo) &&
       getNumDWOTypeUnits()) {
     OS << "\n.debug_types.dwo contents:\n";
     for (const auto &DWOTUS : dwo_type_unit_sections())
       for (const auto &DWOTU : DWOTUS)
         DWOTU->dump(OS, SummarizeTypes);
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Loc) {
+  if (DumpType & DIDT_DebugLoc) {
     OS << "\n.debug_loc contents:\n";
     getDebugLoc()->dump(OS, getRegisterInfo());
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_LocDwo) {
+  if (DumpType & DIDT_DebugLocDwo) {
     OS << "\n.debug_loc.dwo contents:\n";
     getDebugLocDWO()->dump(OS, getRegisterInfo());
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Frames) {
+  if (DumpType & DIDT_DebugFrames) {
     OS << "\n.debug_frame contents:\n";
     getDebugFrame()->dump(OS);
     if (DumpEH) {
@@ -262,13 +262,13 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
     }
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Macro) {
+  if (DumpType & DIDT_DebugMacro) {
     OS << "\n.debug_macinfo contents:\n";
     getDebugMacro()->dump(OS);
   }
 
   uint32_t offset = 0;
-  if (DumpType == DIDT_All || DumpType == DIDT_Aranges) {
+  if (DumpType & DIDT_DebugAranges) {
     OS << "\n.debug_aranges contents:\n";
     DataExtractor arangesData(DObj->getARangeSection(), isLittleEndian(), 0);
     DWARFDebugArangeSet set;
@@ -277,7 +277,7 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
   }
 
   uint8_t savedAddressByteSize = 0;
-  if (DumpType == DIDT_All || DumpType == DIDT_Line) {
+  if (DumpType & DIDT_DebugLine) {
     OS << "\n.debug_line contents:\n";
     for (const auto &CU : compile_units()) {
       savedAddressByteSize = CU->getAddressByteSize();
@@ -295,17 +295,17 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
     }
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_CUIndex) {
+  if (DumpType & DIDT_DebugCUIndex) {
     OS << "\n.debug_cu_index contents:\n";
     getCUIndex().dump(OS);
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_TUIndex) {
+  if (DumpType & DIDT_DebugTUIndex) {
     OS << "\n.debug_tu_index contents:\n";
     getTUIndex().dump(OS);
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_LineDwo) {
+  if (DumpType & DIDT_DebugLineDwo) {
     OS << "\n.debug_line.dwo contents:\n";
     unsigned stmtOffset = 0;
     DWARFDataExtractor lineData(*DObj, DObj->getLineDWOSection(),
@@ -317,7 +317,7 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
     }
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Str) {
+  if (DumpType & DIDT_DebugStr) {
     OS << "\n.debug_str contents:\n";
     DataExtractor strData(DObj->getStringSection(), isLittleEndian(), 0);
     offset = 0;
@@ -328,7 +328,7 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
     }
   }
 
-  if ((DumpType == DIDT_All || DumpType == DIDT_StrDwo) &&
+  if ((DumpType & DIDT_DebugStrDwo) &&
       !DObj->getStringDWOSection().empty()) {
     OS << "\n.debug_str.dwo contents:\n";
     DataExtractor strDWOData(DObj->getStringDWOSection(), isLittleEndian(), 0);
@@ -340,7 +340,7 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
     }
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Ranges) {
+  if (DumpType & DIDT_DebugRanges) {
     OS << "\n.debug_ranges contents:\n";
     // In fact, different compile units may have different address byte
     // sizes, but for simplicity we just use the address byte size of the last
@@ -354,55 +354,55 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpOptions DumpOpts) {
       rangeList.dump(OS);
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Pubnames)
+  if (DumpType & DIDT_DebugPubnames)
     DWARFDebugPubTable(DObj->getPubNamesSection(), isLittleEndian(), false)
         .dump("debug_pubnames", OS);
 
-  if (DumpType == DIDT_All || DumpType == DIDT_Pubtypes)
+  if (DumpType & DIDT_DebugPubtypes)
     DWARFDebugPubTable(DObj->getPubTypesSection(), isLittleEndian(), false)
         .dump("debug_pubtypes", OS);
 
-  if (DumpType == DIDT_All || DumpType == DIDT_GnuPubnames)
+  if (DumpType & DIDT_DebugGnuPubnames)
     DWARFDebugPubTable(DObj->getGnuPubNamesSection(), isLittleEndian(),
                        true /* GnuStyle */)
         .dump("debug_gnu_pubnames", OS);
 
-  if (DumpType == DIDT_All || DumpType == DIDT_GnuPubtypes)
+  if (DumpType & DIDT_DebugGnuPubtypes)
     DWARFDebugPubTable(DObj->getGnuPubTypesSection(), isLittleEndian(),
                        true /* GnuStyle */)
         .dump("debug_gnu_pubtypes", OS);
 
-  if (DumpType == DIDT_All || DumpType == DIDT_StrOffsets)
+  if (DumpType & DIDT_DebugStrOffsets)
     dumpStringOffsetsSection(
         OS, "debug_str_offsets", *DObj, DObj->getStringOffsetSection(),
         DObj->getStringSection(), isLittleEndian(), getMaxVersion());
 
-  if (DumpType == DIDT_All || DumpType == DIDT_StrOffsetsDwo) {
+  if (DumpType & DIDT_DebugStrOffsetsDwo) {
     dumpStringOffsetsSection(
         OS, "debug_str_offsets.dwo", *DObj, DObj->getStringOffsetDWOSection(),
         DObj->getStringDWOSection(), isLittleEndian(), getMaxVersion());
   }
 
-  if ((DumpType == DIDT_All || DumpType == DIDT_GdbIndex) &&
+  if ((DumpType & DIDT_GdbIndex) &&
       !DObj->getGdbIndexSection().empty()) {
     OS << "\n.gnu_index contents:\n";
     getGdbIndex().dump(OS);
   }
 
-  if (DumpType == DIDT_All || DumpType == DIDT_AppleNames)
+  if (DumpType & DIDT_AppleNames)
     dumpAccelSection(OS, "apple_names", *DObj, DObj->getAppleNamesSection(),
                      DObj->getStringSection(), isLittleEndian());
 
-  if (DumpType == DIDT_All || DumpType == DIDT_AppleTypes)
+  if (DumpType & DIDT_AppleTypes)
     dumpAccelSection(OS, "apple_types", *DObj, DObj->getAppleTypesSection(),
                      DObj->getStringSection(), isLittleEndian());
 
-  if (DumpType == DIDT_All || DumpType == DIDT_AppleNamespaces)
+  if (DumpType & DIDT_AppleNamespaces)
     dumpAccelSection(OS, "apple_namespaces", *DObj,
                      DObj->getAppleNamespacesSection(),
                      DObj->getStringSection(), isLittleEndian());
 
-  if (DumpType == DIDT_All || DumpType == DIDT_AppleObjC)
+  if (DumpType & DIDT_AppleObjC)
     dumpAccelSection(OS, "apple_objc", *DObj, DObj->getAppleObjCSection(),
                      DObj->getStringSection(), isLittleEndian());
 }
@@ -434,14 +434,14 @@ DWARFDie DWARFContext::getDIEForOffset(uint32_t Offset) {
   return DWARFDie();
 }
 
-bool DWARFContext::verify(raw_ostream &OS, DIDumpType DumpType) {
+bool DWARFContext::verify(raw_ostream &OS, uint64_t DumpType) {
   bool Success = true;
   DWARFVerifier verifier(OS, *this);
 
   Success &= verifier.handleDebugAbbrev();
-  if (DumpType == DIDT_All || DumpType == DIDT_Info)
+  if (DumpType & DIDT_DebugInfo)
     Success &= verifier.handleDebugInfo();
-  if (DumpType == DIDT_All || DumpType == DIDT_Line)
+  if (DumpType & DIDT_DebugLine)
     Success &= verifier.handleDebugLine();
   Success &= verifier.handleAccelTables();
   return Success;

llvm/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll

@@ -1,4 +1,4 @@
-; RUN: llc -arm-global-merge -global-merge-group-by-use=false -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+; RUN: llc -arm-global-merge -global-merge-group-by-use=false -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck %s
 
 source_filename = "test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll"
 target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"

llvm/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll

@@ -1,4 +1,4 @@
-; RUN: llc -arm-global-merge -global-merge-group-by-use=false -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
+; RUN: llc -arm-global-merge -global-merge-group-by-use=false -filetype=obj < %s | llvm-dwarfdump -debug-info - | FileCheck %s
 
 ; CHECK: DW_TAG_variable
 ; CHECK-NOT: DW_TAG

llvm/test/CodeGen/ARM/debug-info-sreg2.ll

@@ -1,4 +1,4 @@
-; RUN: llc < %s - -filetype=obj | llvm-dwarfdump -debug-dump=loc - | FileCheck %s
+; RUN: llc < %s - -filetype=obj | llvm-dwarfdump -debug-loc - | FileCheck %s
 ; Radar 9376013
 target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
 target triple = "thumbv7-apple-macosx10.6.7"