Index: llvm/test/tools/llvm-objdump/X86/source-interleave-prefix.test
===================================================================
--- llvm/test/tools/llvm-objdump/X86/source-interleave-prefix.test
+++ llvm/test/tools/llvm-objdump/X86/source-interleave-prefix.test
@@ -83,9 +83,16 @@
 
 ; RUN: not llvm-objdump --prefix %p --prefix-strip '-1' --source %t-missing-prefix.o 2>&1 | \
 ; RUN:   FileCheck %s --check-prefix=CHECK-INVALID-PREFIX-STRIP -DOPTION='-1'
-; CHECK-INVALID-PREFIX-STRIP: {{.*}}llvm-objdump{{.*}}: error: --prefix-strip: expected a non-negative integer, but got '[[OPTION]]'
+; CHECK-INVALID-PREFIX-STRIP: {{.*}}llvm-objdump{{.*}}: error: --prefix-strip=: expected a non-negative integer, but got '[[OPTION]]'
 
 ;; Test text value --prefix-strip. Reports an error.
 
 ; RUN: not llvm-objdump --prefix %p --prefix-strip foo --source %t-missing-prefix.o 2>&1 | \
 ; RUN:   FileCheck %s --check-prefix=CHECK-INVALID-PREFIX-STRIP -DOPTION='foo'
+
+;; Test use of --prefix= and --prefix-strip=
+
+; RUN: sed -e "s,SRC_COMPDIR,/extra/Inputs,g" %p/Inputs/source-interleave.ll > %t-extra-path-prefix.ll
+; RUN: llc -o %t-extra-path-prefix.o -filetype=obj -mtriple=x86_64-pc-linux %t-extra-path-prefix.ll
+; RUN: llvm-objdump --prefix=%p --prefix-strip=1 --source %t-extra-path-prefix.o 2>&1 | \
+; RUN:   FileCheck %s --check-prefix=CHECK-MISSING-PREFIX-FIX
Index: llvm/tools/llvm-objdump/ObjdumpOpts.td
===================================================================
--- llvm/tools/llvm-objdump/ObjdumpOpts.td
+++ llvm/tools/llvm-objdump/ObjdumpOpts.td
@@ -180,12 +180,14 @@
   HelpText<"Ignored for compatibility with GNU objdump">;
 def : Flag<["-"], "w">, Alias<wide>;
 
-def prefix : Separate<["--"], "prefix">,
+def prefix_EQ : Joined<["--"], "prefix=">,
   HelpText<"Add prefix to absolute paths">;
+def : Separate<["--"], "prefix">, Alias<prefix_EQ>;
 
-def prefix_strip : Separate<["--"], "prefix-strip">,
+def prefix_strip_EQ : Joined<["--"], "prefix-strip=">,
   HelpText<"Strip out initial directories from absolute "
            "paths. No effect without --prefix">;
+def : Separate<["--"], "prefix-strip">, Alias<prefix_strip_EQ>;
 
 def debug_vars_EQ : Joined<["--"], "debug-vars=">,
   Values<"unicode,ascii">;
Index: llvm/tools/llvm-objdump/llvm-objdump.cpp
===================================================================
--- llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -2560,8 +2560,8 @@
   TripleName = InputArgs.getLastArgValue(OBJDUMP_triple_EQ).str();
   UnwindInfo = InputArgs.hasArg(OBJDUMP_unwind_info);
   Wide = InputArgs.hasArg(OBJDUMP_wide);
-  Prefix = InputArgs.getLastArgValue(OBJDUMP_prefix).str();
-  parseIntArg(InputArgs, OBJDUMP_prefix_strip, PrefixStrip);
+  Prefix = InputArgs.getLastArgValue(OBJDUMP_prefix_EQ).str();
+  parseIntArg(InputArgs, OBJDUMP_prefix_strip_EQ, PrefixStrip);
   if (const opt::Arg *A = InputArgs.getLastArg(OBJDUMP_debug_vars_EQ)) {
     DbgVariables = StringSwitch<DebugVarsFormat>(A->getValue())
                        .Case("ascii", DVASCII)