Revert r314817 "[dwarfdump] Add -lookup option"

The test fails on Linux; see follow-up email on the llvm-commits list.

> Add the option to lookup an address in the debug information and print
> out the file, function, block and line table details.
>
> Differential revision: https://reviews.llvm.org/D38409

This also reverts the follow-up r314818:

> [test] Fix llvm-dwarfdump/cmdline.test
>
> Fixes test/tools/llvm-dwarfdump/cmdline.test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314825 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/DebugInfo/DIContext.h b/include/llvm/DebugInfo/DIContext.h
index d1336610f32c3bb0a63b9629221db48af98b16e4..ce0a156e9f7483eac1dd0cf7371a38ad41a5bed7 100644 (file)
--- a/include/llvm/DebugInfo/DIContext.h
+++ b/include/llvm/DebugInfo/DIContext.h
@@ -17,7 +17,6 @@
 
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Object/ObjectFile.h"
-#include "llvm/Support/raw_ostream.h"
 #include <cassert>
 #include <cstdint>
 #include <memory>
@@ -27,6 +26,8 @@
 
 namespace llvm {
 
+class raw_ostream;
+
 /// A format-neutral container for source line information.
 struct DILineInfo {
   std::string FileName;
@@ -45,30 +46,15 @@ struct DILineInfo {
            FileName == RHS.FileName && FunctionName == RHS.FunctionName &&
            StartLine == RHS.StartLine && Discriminator == RHS.Discriminator;
   }
-
   bool operator!=(const DILineInfo &RHS) const {
     return !(*this == RHS);
   }
-
   bool operator<(const DILineInfo &RHS) const {
     return std::tie(FileName, FunctionName, Line, Column, StartLine,
                     Discriminator) <
            std::tie(RHS.FileName, RHS.FunctionName, RHS.Line, RHS.Column,
                     RHS.StartLine, RHS.Discriminator);
   }
-
-  operator bool() const { return (*this) != DILineInfo(); }
-
-  void dump(raw_ostream &OS) {
-    OS << "Line info: ";
-    if (FileName != "<invalid>")
-      OS << "file '" << FileName << "', ";
-    if (FunctionName != "<invalid>")
-      OS << "function '" << FunctionName << "', ";
-    OS << "line " << Line << ", ";
-    OS << "column " << Column << ", ";
-    OS << "start line " << StartLine << '\n';
-  }
 };
 
 using DILineInfoTable = SmallVector<std::pair<uint64_t, DILineInfo>, 16>;

diff --git a/include/llvm/DebugInfo/DWARF/DWARFContext.h b/include/llvm/DebugInfo/DWARF/DWARFContext.h
index 2cd8fa95431269ca93f541f94eb8a4b0915ec0fc..4cecd22d4501bc4e9d84209904dc0fe3b02a0931 100644 (file)
--- a/include/llvm/DebugInfo/DWARF/DWARFContext.h
+++ b/include/llvm/DebugInfo/DWARF/DWARFContext.h
@@ -257,18 +257,6 @@ public:
   /// Get a pointer to a parsed line table corresponding to a compile unit.
   const DWARFDebugLine::LineTable *getLineTableForUnit(DWARFUnit *cu);
 
-  /// Wraps the returned DIEs for a given address.
-  struct DIEsForAddress {
-    DWARFCompileUnit *CompileUnit = nullptr;
-    DWARFDie FunctionDIE;
-    DWARFDie BlockDIE;
-    operator bool() const { return CompileUnit != nullptr; }
-  };
-
-  /// Get the compilation unit, the function DIE and lexical block DIE for the
-  /// given address where applicable.
-  DIEsForAddress getDIEsForAddress(uint64_t Address);
-
   DILineInfo getLineInfoForAddress(uint64_t Address,
       DILineInfoSpecifier Specifier = DILineInfoSpecifier()) override;
   DILineInfoTable getLineInfoForAddressRange(uint64_t Address, uint64_t Size,

diff --git a/include/llvm/DebugInfo/DWARF/DWARFUnit.h b/include/llvm/DebugInfo/DWARF/DWARFUnit.h
index fb4b50f354bc9192bdc3ad9e3d5bc2d33006d5a3..0df5c16e4a23f958a9d279176de514aa201c01ab 100644 (file)
--- a/include/llvm/DebugInfo/DWARF/DWARFUnit.h
+++ b/include/llvm/DebugInfo/DWARF/DWARFUnit.h
@@ -329,11 +329,6 @@ public:
 
   void collectAddressRanges(DWARFAddressRangesVector &CURanges);
 
-  /// Returns subprogram DIE with address range encompassing the provided
-  /// address. The pointer is alive as long as parsed compile unit DIEs are not
-  /// cleared.
-  DWARFDie getSubroutineForAddress(uint64_t Address);
-
   /// getInlinedChainForAddress - fetches inlined chain for a given address.
   /// Returns empty chain if there is no subprogram containing address. The
   /// chain is valid as long as parsed compile unit DIEs are not cleared.
@@ -416,6 +411,11 @@ private:
   /// parseDWO - Parses .dwo file for current compile unit. Returns true if
   /// it was actually constructed.
   bool parseDWO();
+
+  /// getSubroutineForAddress - Returns subprogram DIE with address range
+  /// encompassing the provided address. The pointer is alive as long as parsed
+  /// compile unit DIEs are not cleared.
+  DWARFDie getSubroutineForAddress(uint64_t Address);
 };
 
 } // end namespace llvm

diff --git a/lib/DebugInfo/DWARF/DWARFContext.cpp b/lib/DebugInfo/DWARF/DWARFContext.cpp
index 24aa666fb81f148e480fa4f9dfc6f01a9ba24df6..bf0c4b01dc0bdc5f491bd2863a73d9d61af040fa 100644 (file)
--- a/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -48,6 +48,7 @@
 #include <cstdint>
 #include <map>
 #include <string>
+#include <tuple>
 #include <utility>
 #include <vector>
 
@@ -722,35 +723,6 @@ DWARFCompileUnit *DWARFContext::getCompileUnitForAddress(uint64_t Address) {
   return getCompileUnitForOffset(CUOffset);
 }
 
-DWARFContext::DIEsForAddress DWARFContext::getDIEsForAddress(uint64_t Address) {
-  DIEsForAddress Result;
-
-  DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
-  if (!CU)
-    return Result;
-
-  Result.CompileUnit = CU;
-  Result.FunctionDIE = CU->getSubroutineForAddress(Address);
-
-  std::vector<DWARFDie> Worklist;
-  Worklist.push_back(Result.FunctionDIE);
-  while (!Worklist.empty()) {
-    DWARFDie DIE = Worklist.back();
-    Worklist.pop_back();
-
-    if (DIE.getTag() == DW_TAG_lexical_block &&
-        DIE.addressRangeContainsAddress(Address)) {
-      Result.BlockDIE = DIE;
-      break;
-    }
-
-    for (auto Child : DIE)
-      Worklist.push_back(Child);
-  }
-
-  return Result;
-}
-
 static bool getFunctionNameAndStartLineForAddress(DWARFCompileUnit *CU,
                                                   uint64_t Address,
                                                   FunctionNameKind Kind,

diff --git a/lib/DebugInfo/DWARF/DWARFUnit.cpp b/lib/DebugInfo/DWARF/DWARFUnit.cpp
index 98e548b8836c57acfeb5f0c7a23b78040208cba9..86451faa79deb6b46031aaa86918de9aa7f2add7 100644 (file)
--- a/lib/DebugInfo/DWARF/DWARFUnit.cpp
+++ b/lib/DebugInfo/DWARF/DWARFUnit.cpp
@@ -440,7 +440,7 @@ DWARFDie DWARFUnit::getSibling(const DWARFDebugInfoEntry *Die) {
   // NULL DIEs don't have siblings.
   if (Die->getAbbreviationDeclarationPtr() == nullptr)
     return DWARFDie();
-
+  
   // Find the next DIE whose depth is the same as the Die's depth.
   for (size_t I = getDIEIndex(Die) + 1, EndIdx = DieArray.size(); I < EndIdx;
        ++I) {

diff --git a/test/tools/llvm-dwarfdump/X86/lookup.s b/test/tools/llvm-dwarfdump/X86/lookup.s
deleted file mode 100644 (file)
index d8313ff..0000000
--- a/test/tools/llvm-dwarfdump/X86/lookup.s
+++ /dev/null
@@ -1,285 +0,0 @@
-# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \
-# RUN:   | llvm-dwarfdump -lookup=0x6a6f6e6173 - | \
-# RUN: FileCheck %s --check-prefix=EMPTY --allow-empty
-# EMPTY: {{^$}}
-
-# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \
-# RUN:   | llvm-dwarfdump -lookup=0x4 - | \
-# RUN: FileCheck %s -check-prefixes=CHECK,LEX,A
-
-# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \
-# RUN:   | llvm-dwarfdump -lookup=0xb - | \
-# RUN: FileCheck %s -check-prefixes=CHECK,LEX,B
-
-# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \
-# RUN:   | llvm-dwarfdump -lookup=0x14 - | \
-# RUN: FileCheck %s -check-prefixes=CHECK,C
-
-# CHECK: Compile Unit: length = 0x00000060 version = 0x0004 abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x00000064)
-
-# CHECK: DW_TAG_compile_unit
-# CHECK:   DW_AT_name        ("foo.c")
-# CHECK:   DW_AT_stmt_list   (0x00000000)
-# CHECK:   DW_AT_low_pc      (0x0000000000000000)
-# CHECK:   DW_AT_high_pc     (0x00000016)
-
-# CHECK: DW_TAG_subprogram
-# CHECK:     DW_AT_low_pc    (0x0000000000000000)
-# CHECK:     DW_AT_high_pc   (0x00000016)
-# CHECK:     DW_AT_name      ("foo")
-
-# LEX: DW_TAG_lexical_block
-# LEX:       DW_AT_low_pc  (0x0000000000000004)
-# LEX:       DW_AT_high_pc (0x00000010)
-
-# A: Line info: file 'foo.c', line 3, column 9, start line 1
-# B: Line info: file 'foo.c', line 4, column 6, start line 1
-# C: Line info: file 'foo.c', line 6, column 1, start line 1
-
-       .section        __TEXT,__text,regular,pure_instructions
-       .macosx_version_min 10, 13
-       .globl  _foo                    ## -- Begin function foo
-       .p2align        4, 0x90
-_foo:                                   ## @foo
-Lfunc_begin0:
-       .file   1 "foo.c"
-       .loc    1 1 0                   ## foo.c:1:0
-       .cfi_startproc
-## BB#0:                                ## %entry
-       pushq   %rbp
-Lcfi0:
-       .cfi_def_cfa_offset 16
-Lcfi1:
-       .cfi_offset %rbp, -16
-       movq    %rsp, %rbp
-Lcfi2:
-       .cfi_def_cfa_register %rbp
-Ltmp0:
-       .loc    1 3 9 prologue_end      ## foo.c:3:9
-       movl    $1, -4(%rbp)
-       .loc    1 4 6                   ## foo.c:4:6
-       movl    -4(%rbp), %eax
-       addl    $1, %eax
-       movl    %eax, -4(%rbp)
-Ltmp1:
-       .loc    1 6 1                   ## foo.c:6:1
-       popq    %rbp
-       retq
-Ltmp2:
-Lfunc_end0:
-       .cfi_endproc
-                                        ## -- End function
-       .section        __DWARF,__debug_str,regular,debug
-Linfo_string:
-       .asciz  "clang version 6.0.0 (trunk 314509) (llvm/trunk 314517)" ## string offset=0
-       .asciz  "foo.c"                 ## string offset=55
-       .asciz  "/private/tmp"          ## string offset=61
-       .asciz  "foo"                   ## string offset=74
-       .asciz  "i"                     ## string offset=78
-       .asciz  "int"                   ## string offset=80
-       .section        __DWARF,__debug_abbrev,regular,debug
-Lsection_abbrev:
-       .byte   1                       ## Abbreviation Code
-       .byte   17                      ## DW_TAG_compile_unit
-       .byte   1                       ## DW_CHILDREN_yes
-       .byte   37                      ## DW_AT_producer
-       .byte   14                      ## DW_FORM_strp
-       .byte   19                      ## DW_AT_language
-       .byte   5                       ## DW_FORM_data2
-       .byte   3                       ## DW_AT_name
-       .byte   14                      ## DW_FORM_strp
-       .byte   16                      ## DW_AT_stmt_list
-       .byte   23                      ## DW_FORM_sec_offset
-       .byte   27                      ## DW_AT_comp_dir
-       .byte   14                      ## DW_FORM_strp
-       .byte   17                      ## DW_AT_low_pc
-       .byte   1                       ## DW_FORM_addr
-       .byte   18                      ## DW_AT_high_pc
-       .byte   6                       ## DW_FORM_data4
-       .byte   0                       ## EOM(1)
-       .byte   0                       ## EOM(2)
-       .byte   2                       ## Abbreviation Code
-       .byte   46                      ## DW_TAG_subprogram
-       .byte   1                       ## DW_CHILDREN_yes
-       .byte   17                      ## DW_AT_low_pc
-       .byte   1                       ## DW_FORM_addr
-       .byte   18                      ## DW_AT_high_pc
-       .byte   6                       ## DW_FORM_data4
-       .byte   64                      ## DW_AT_frame_base
-       .byte   24                      ## DW_FORM_exprloc
-       .byte   3                       ## DW_AT_name
-       .byte   14                      ## DW_FORM_strp
-       .byte   58                      ## DW_AT_decl_file
-       .byte   11                      ## DW_FORM_data1
-       .byte   59                      ## DW_AT_decl_line
-       .byte   11                      ## DW_FORM_data1
-       .byte   63                      ## DW_AT_external
-       .byte   25                      ## DW_FORM_flag_present
-       .byte   0                       ## EOM(1)
-       .byte   0                       ## EOM(2)
-       .byte   3                       ## Abbreviation Code
-       .byte   11                      ## DW_TAG_lexical_block
-       .byte   1                       ## DW_CHILDREN_yes
-       .byte   17                      ## DW_AT_low_pc
-       .byte   1                       ## DW_FORM_addr
-       .byte   18                      ## DW_AT_high_pc
-       .byte   6                       ## DW_FORM_data4
-       .byte   0                       ## EOM(1)
-       .byte   0                       ## EOM(2)
-       .byte   4                       ## Abbreviation Code
-       .byte   52                      ## DW_TAG_variable
-       .byte   0                       ## DW_CHILDREN_no
-       .byte   2                       ## DW_AT_location
-       .byte   24                      ## DW_FORM_exprloc
-       .byte   3                       ## DW_AT_name
-       .byte   14                      ## DW_FORM_strp
-       .byte   58                      ## DW_AT_decl_file
-       .byte   11                      ## DW_FORM_data1
-       .byte   59                      ## DW_AT_decl_line
-       .byte   11                      ## DW_FORM_data1
-       .byte   73                      ## DW_AT_type
-       .byte   19                      ## DW_FORM_ref4
-       .byte   0                       ## EOM(1)
-       .byte   0                       ## EOM(2)
-       .byte   5                       ## Abbreviation Code
-       .byte   36                      ## DW_TAG_base_type
-       .byte   0                       ## DW_CHILDREN_no
-       .byte   3                       ## DW_AT_name
-       .byte   14                      ## DW_FORM_strp
-       .byte   62                      ## DW_AT_encoding
-       .byte   11                      ## DW_FORM_data1
-       .byte   11                      ## DW_AT_byte_size
-       .byte   11                      ## DW_FORM_data1
-       .byte   0                       ## EOM(1)
-       .byte   0                       ## EOM(2)
-       .byte   0                       ## EOM(3)
-       .section        __DWARF,__debug_info,regular,debug
-Lsection_info:
-Lcu_begin0:
-       .long   96                      ## Length of Unit
-       .short  4                       ## DWARF version number
-Lset0 = Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section
-       .long   Lset0
-       .byte   8                       ## Address Size (in bytes)
-       .byte   1                       ## Abbrev [1] 0xb:0x59 DW_TAG_compile_unit
-       .long   0                       ## DW_AT_producer
-       .short  12                      ## DW_AT_language
-       .long   55                      ## DW_AT_name
-Lset1 = Lline_table_start0-Lsection_line ## DW_AT_stmt_list
-       .long   Lset1
-       .long   61                      ## DW_AT_comp_dir
-       .quad   Lfunc_begin0            ## DW_AT_low_pc
-Lset2 = Lfunc_end0-Lfunc_begin0         ## DW_AT_high_pc
-       .long   Lset2
-       .byte   2                       ## Abbrev [2] 0x2a:0x32 DW_TAG_subprogram
-       .quad   Lfunc_begin0            ## DW_AT_low_pc
-Lset3 = Lfunc_end0-Lfunc_begin0         ## DW_AT_high_pc
-       .long   Lset3
-       .byte   1                       ## DW_AT_frame_base
-       .byte   86
-       .long   74                      ## DW_AT_name
-       .byte   1                       ## DW_AT_decl_file
-       .byte   1                       ## DW_AT_decl_line
-                                        ## DW_AT_external
-       .byte   3                       ## Abbrev [3] 0x3f:0x1c DW_TAG_lexical_block
-       .quad   Ltmp0                   ## DW_AT_low_pc
-Lset4 = Ltmp1-Ltmp0                     ## DW_AT_high_pc
-       .long   Lset4
-       .byte   4                       ## Abbrev [4] 0x4c:0xe DW_TAG_variable
-       .byte   2                       ## DW_AT_location
-       .byte   145
-       .byte   124
-       .long   78                      ## DW_AT_name
-       .byte   1                       ## DW_AT_decl_file
-       .byte   3                       ## DW_AT_decl_line
-       .long   92                      ## DW_AT_type
-       .byte   0                       ## End Of Children Mark
-       .byte   0                       ## End Of Children Mark
-       .byte   5                       ## Abbrev [5] 0x5c:0x7 DW_TAG_base_type
-       .long   80                      ## DW_AT_name
-       .byte   5                       ## DW_AT_encoding
-       .byte   4                       ## DW_AT_byte_size
-       .byte   0                       ## End Of Children Mark
-       .section        __DWARF,__debug_ranges,regular,debug
-Ldebug_range:
-       .section        __DWARF,__debug_macinfo,regular,debug
-Ldebug_macinfo:
-Lcu_macro_begin0:
-       .byte   0                       ## End Of Macro List Mark
-       .section        __DWARF,__apple_names,regular,debug
-Lnames_begin:
-       .long   1212240712              ## Header Magic
-       .short  1                       ## Header Version
-       .short  0                       ## Header Hash Function
-       .long   1                       ## Header Bucket Count
-       .long   1                       ## Header Hash Count
-       .long   12                      ## Header Data Length
-       .long   0                       ## HeaderData Die Offset Base
-       .long   1                       ## HeaderData Atom Count
-       .short  1                       ## DW_ATOM_die_offset
-       .short  6                       ## DW_FORM_data4
-       .long   0                       ## Bucket 0
-       .long   193491849               ## Hash in Bucket 0
-       .long   LNames0-Lnames_begin    ## Offset in Bucket 0
-LNames0:
-       .long   74                      ## foo
-       .long   1                       ## Num DIEs
-       .long   42
-       .long   0
-       .section        __DWARF,__apple_objc,regular,debug
-Lobjc_begin:
-       .long   1212240712              ## Header Magic
-       .short  1                       ## Header Version
-       .short  0                       ## Header Hash Function
-       .long   1                       ## Header Bucket Count
-       .long   0                       ## Header Hash Count
-       .long   12                      ## Header Data Length
-       .long   0                       ## HeaderData Die Offset Base
-       .long   1                       ## HeaderData Atom Count
-       .short  1                       ## DW_ATOM_die_offset
-       .short  6                       ## DW_FORM_data4
-       .long   -1                      ## Bucket 0
-       .section        __DWARF,__apple_namespac,regular,debug
-Lnamespac_begin:
-       .long   1212240712              ## Header Magic
-       .short  1                       ## Header Version
-       .short  0                       ## Header Hash Function
-       .long   1                       ## Header Bucket Count
-       .long   0                       ## Header Hash Count
-       .long   12                      ## Header Data Length
-       .long   0                       ## HeaderData Die Offset Base
-       .long   1                       ## HeaderData Atom Count
-       .short  1                       ## DW_ATOM_die_offset
-       .short  6                       ## DW_FORM_data4
-       .long   -1                      ## Bucket 0
-       .section        __DWARF,__apple_types,regular,debug
-Ltypes_begin:
-       .long   1212240712              ## Header Magic
-       .short  1                       ## Header Version
-       .short  0                       ## Header Hash Function
-       .long   1                       ## Header Bucket Count
-       .long   1                       ## Header Hash Count
-       .long   20                      ## Header Data Length
-       .long   0                       ## HeaderData Die Offset Base
-       .long   3                       ## HeaderData Atom Count
-       .short  1                       ## DW_ATOM_die_offset
-       .short  6                       ## DW_FORM_data4
-       .short  3                       ## DW_ATOM_die_tag
-       .short  5                       ## DW_FORM_data2
-       .short  4                       ## DW_ATOM_type_flags
-       .short  11                      ## DW_FORM_data1
-       .long   0                       ## Bucket 0
-       .long   193495088               ## Hash in Bucket 0
-       .long   Ltypes0-Ltypes_begin    ## Offset in Bucket 0
-Ltypes0:
-       .long   80                      ## int
-       .long   1                       ## Num DIEs
-       .long   92
-       .short  36
-       .byte   0
-       .long   0
-
-.subsections_via_symbols
-       .section        __DWARF,__debug_line,regular,debug
-Lsection_line:
-Lline_table_start0:

diff --git a/test/tools/llvm-dwarfdump/cmdline.test b/test/tools/llvm-dwarfdump/cmdline.test
index 08aa3a3f19f40676968aa959649b92b481b9c533..f4c023af6ef93a6849d112571845287616609a3c 100644 (file)
--- a/test/tools/llvm-dwarfdump/cmdline.test
+++ b/test/tools/llvm-dwarfdump/cmdline.test
@@ -8,7 +8,6 @@ HELP: -eh-frame
 HELP: Specific Options
 HELP: -find
 HELP: -ignore-case
-HELP: -lookup
 HELP: -name
 HELP: -recurse-depth=<N>
 HELP: -show-children

diff --git a/tools/llvm-dwarfdump/llvm-dwarfdump.cpp b/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
index 07a940b50058b6d437dce4ecc21266fa31852d3f..9abc92b7b83b6085da52d789228d5b0be3df70eb 100644 (file)
--- a/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
+++ b/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
@@ -155,17 +155,13 @@ static list<std::string>
               "attribute) matches the exact text in <name>."),
          value_desc("name"), cat(DwarfDumpCategory));
 static alias NameAlias("n", desc("Alias for -name"), aliasopt(Name));
-static opt<uint64_t>
-    Lookup("lookup",
-           desc("Lookup <address> in the debug information and print out any"
-                "available file, function, block and line table details."),
-           value_desc("address"), cat(DwarfDumpCategory));
 static opt<std::string>
     OutputFilename("out-file", cl::init(""),
-                   cl::desc("Redirect output to <filename>"),
-                   cl::value_desc("filename"), cat(DwarfDumpCategory));
+                   cl::desc("Redirect output to the specified file"),
+                   cl::value_desc("filename"));
 static alias OutputFilenameAlias("o", desc("Alias for -out-file"),
-                                 aliasopt(OutputFilename));
+                                 aliasopt(OutputFilename),
+                                 cat(DwarfDumpCategory));
 static opt<bool>
     ShowChildren("show-children",
                  desc("Show a debug info entry's children when selectively "
@@ -281,44 +277,17 @@ static void filterByName(const StringSet<> &Names,
           Die.dump(OS, 0, getDumpOpts());
       }
     }
-
-}
-
-/// Handle the --lookup option and dump the DIEs and line info for the given
-/// address.
-static bool lookup(DWARFContext &DICtx, uint64_t Address, raw_ostream &OS) {
-  auto DIEsForAddr = DICtx.getDIEsForAddress(Lookup);
-
-  if (!DIEsForAddr)
-    return false;
-
-  DIDumpOptions DumpOpts = getDumpOpts();
-  DumpOpts.RecurseDepth = 0;
-  DIEsForAddr.CompileUnit->dump(OS, DumpOpts);
-  if (DIEsForAddr.FunctionDIE) {
-    DIEsForAddr.FunctionDIE.dump(OS, 2, DumpOpts);
-    if (DIEsForAddr.BlockDIE)
-      DIEsForAddr.BlockDIE.dump(OS, 4, DumpOpts);
-  }
-
-  if (DILineInfo LineInfo = DICtx.getLineInfoForAddress(Lookup))
-    LineInfo.dump(OS);
-
-  return true;
 }
 
 static bool dumpObjectFile(ObjectFile &Obj, DWARFContext &DICtx, Twine Filename,
                            raw_ostream &OS) {
   logAllUnhandledErrors(DICtx.loadRegisterInfo(Obj), errs(),
                         Filename.str() + ": ");
+
   // The UUID dump already contains all the same information.
   if (!(DumpType & DIDT_UUID) || DumpType == DIDT_All)
     OS << Filename << ":\tfile format " << Obj.getFileFormatName() << '\n';
 
-  // Handle the --lookup option.
-  if (Lookup)
-    return lookup(DICtx, Lookup, OS);
-
   // Handle the --name option.
   if (!Name.empty()) {
     StringSet<> Names;