Index: llvm/docs/CommandGuide/llvm-objdump.rst
===================================================================
--- llvm/docs/CommandGuide/llvm-objdump.rst
+++ llvm/docs/CommandGuide/llvm-objdump.rst
@@ -167,6 +167,10 @@
 
   When disassembling, do not print the raw bytes of each instruction.
 
+.. option:: --prefix=<prefix>
+
+  When disassembling with the :option:`--source` option, prepend ``prefix`` to absolute paths.
+
 .. option:: --print-imm-hex
 
   Use hex format when printing immediate values in disassembly output.
Index: llvm/docs/llvm-objdump.1
===================================================================
--- llvm/docs/llvm-objdump.1
+++ llvm/docs/llvm-objdump.1
@@ -105,6 +105,10 @@
 Print no leading headers.
 .It Fl -no-show-raw-insn
 When disassembling instructions, do not print the instruction bytes.
+.It Fl -prefix Ns = Ns Ar PREFIX
+When disassembling, add
+.Ar PREFIX
+to absolute paths.
 .It Fl -print-imm-hex
 Use hex format for immediate values.
 .It Fl -private-header
Index: llvm/test/tools/llvm-objdump/X86/source-interleave-absolute-paths.test
===================================================================
--- /dev/null
+++ llvm/test/tools/llvm-objdump/X86/source-interleave-absolute-paths.test
@@ -0,0 +1,34 @@
+;; Test --prefix option.
+
+; RUN: sed -e "s,SRC_COMPDIR,/Inputs,g" %p/Inputs/source-interleave.ll > %t.ll
+; RUN: llc -o %t.o -filetype=obj -mtriple=x86_64-pc-linux %t.ll
+
+; RUN: sed -e "s,SRC_COMPDIR,%/p/Inputs,g" %p/Inputs/source-interleave.ll > %t2.ll
+; RUN: llc -o %t2.o -filetype=obj -mtriple=x86_64-pc-linux %t2.ll
+
+; RUN: sed -e "s,SRC_COMPDIR,,g" %p/Inputs/source-interleave.ll | sed -e "s,filename: \"source-interleave-x86_64.c\",filename: \"\",g"> %t3.ll
+; RUN: llc -o %t3.o -filetype=obj -mtriple=x86_64-pc-linux %t3.ll
+
+;; Test invalid source interleave fixed by adding the correct prefix.
+
+; RUN: llvm-objdump --prefix %p --source %t.o 2>&1 | FileCheck %s --check-prefix CHECK-MISS-PREFIX-FIX
+; CHECK-MISS-PREFIX-FIX: ; int foo() {
+
+;; Test valid source interleave being broken by adding a wrong prefix.
+
+; RUN: llvm-objdump --prefix myprefix --source %t2.o 2>&1 | FileCheck %s --check-prefix CHECK-BROKEN-PREFIX -DFILE=%t2.o -DROOT=%/p
+; CHECK-BROKEN-PREFIX: warning: '[[FILE]]': failed to find source myprefix[[ROOT]]/Inputs/source-interleave-x86_64.c
+
+;; Test that trailing separators (i.e. '/') are removed from the prefix argument.
+;; The prefix '/' is the same as not using the `--prefix` option.
+
+; RUN: llvm-objdump --prefix / --source %t2.o 2>&1 | FileCheck %s --check-prefix CHECK-MISS-PREFIX-FIX
+
+;; The prefix 'myprefix///' is converted to 'myprefix'.
+
+; RUN: llvm-objdump --prefix myprefix/// --source %t.o 2>&1 | FileCheck %s --check-prefix CHECK-TRAILING -DFILE=%t.o
+; CHECK-TRAILING: warning: '[[FILE]]': failed to find source myprefix/Inputs/source-interleave-x86_64.c
+
+;; Test malformed input
+; RUN: llvm-objdump --prefix myprefix --source %t3.o 2>&1 | FileCheck %s --check-prefix CHECK-MALFORMED -DFILE=%t3.o -DROOT=%/p
+; CHECK-MALFORMED: warning: '[[FILE]]': failed to parse debug information for [[FILE]]
Index: llvm/tools/llvm-objdump/llvm-objdump.h
===================================================================
--- llvm/tools/llvm-objdump/llvm-objdump.h
+++ llvm/tools/llvm-objdump/llvm-objdump.h
@@ -48,6 +48,7 @@
 extern cl::opt<bool> SymbolTable;
 extern cl::opt<std::string> TripleName;
 extern cl::opt<bool> UnwindInfo;
+extern cl::opt<std::string> Prefix;
 
 extern StringSet<> FoundSectionSet;
 
Index: llvm/tools/llvm-objdump/llvm-objdump.cpp
===================================================================
--- llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -353,6 +353,10 @@
          cl::cat(ObjdumpCat));
 static cl::alias WideShort("w", cl::Grouping, cl::aliasopt(Wide));
 
+cl::opt<std::string> objdump::Prefix("prefix",
+                                     cl::desc("Add prefix to absolute paths"),
+                                     cl::cat(ObjdumpCat));
+
 enum DebugVarsFormat {
   DVDisabled,
   DVUnicode,
@@ -417,6 +421,30 @@
           /*IncrementIndex=*/true};
 }
 
+/// GNU tools is_absolute() equivalent.
+///
+/// LLVM is_absolute() matches C++17 behavior that essentially says that the
+/// path must be unambiguous (i.e. that there must be a drive letter for
+/// Windows). However GNU tools treat a path as absolute with or without
+/// the drive letter.
+static bool objdumpIsAbsolute(const Twine &Path) {
+  if (Triple(sys::getProcessTriple()).isOSWindows()) {
+    SmallString<128> PathStorage;
+    StringRef P = Path.toStringRef(PathStorage);
+
+    // Handle '/' and '\\'
+    if (!P.empty() &&
+        sys::path::is_separator(P.front(), sys::path::Style::windows))
+      return true;
+
+    // Handle drive pattern (i.e "c:").
+    if (P.size() >= 2 && (P[0] && P[1] == ':'))
+      return true;
+  }
+
+  return sys::path::is_absolute(Path);
+}
+
 SectionFilter objdump::ToolSectionFilter(object::ObjectFile const &O,
                                          uint64_t *Idx) {
   // Start at UINT64_MAX so that the first index returned after an increment is
@@ -1031,6 +1059,15 @@
     }
   }
 
+  if (!Prefix.empty()) {
+    if (objdumpIsAbsolute(LineInfo.FileName)) {
+      SmallString<128> FilePath;
+      sys::path::append(FilePath, Prefix, LineInfo.FileName);
+
+      LineInfo.FileName = std::string(FilePath);
+    }
+  }
+
   if (PrintLines)
     printLines(OS, LineInfo, Delimiter, LVP);
   if (PrintSource)
@@ -2969,6 +3006,15 @@
   if (InputFilenames.empty())
     InputFilenames.push_back("a.out");
 
+  // The --prefix option removes the trailing separators from the given prefix.
+  if (!Prefix.empty()) {
+    bool IsOsWindows = Triple(sys::getProcessTriple()).isOSWindows();
+    while (sys::path::is_separator(Prefix.back(),
+                                   IsOsWindows ? sys::path::Style::windows
+                                               : sys::path::Style::native))
+      Prefix.pop_back();
+  }
+
   if (AllHeaders)
     ArchiveHeaders = FileHeaders = PrivateHeaders = Relocations =
         SectionHeaders = SymbolTable = true;