Index: lld/MachO/InputFiles.h
===================================================================
--- lld/MachO/InputFiles.h
+++ lld/MachO/InputFiles.h
@@ -148,6 +148,7 @@
 
   static bool classof(const InputFile *f) { return f->kind() == DylibKind; }
 
+  StringRef originalInstallName;
   StringRef installName;
   DylibFile *exportingFile = nullptr;
   DylibFile *umbrella;
Index: lld/MachO/InputFiles.cpp
===================================================================
--- lld/MachO/InputFiles.cpp
+++ lld/MachO/InputFiles.cpp
@@ -847,7 +847,7 @@
     auto *c = reinterpret_cast<const dylib_command *>(cmd);
     currentVersion = read32le(&c->dylib.current_version);
     compatibilityVersion = read32le(&c->dylib.compatibility_version);
-    installName =
+    installName = originalInstallName =
         reinterpret_cast<const char *>(cmd) + read32le(&c->dylib.name);
   } else if (!isBundleLoader) {
     // macho_executable and macho_bundle don't have LC_ID_DYLIB,
@@ -938,7 +938,7 @@
     umbrella = this;
   this->umbrella = umbrella;
 
-  installName = saver.save(interface.getInstallName());
+  installName = originalInstallName= saver.save(interface.getInstallName());
   compatibilityVersion = interface.getCompatibilityVersion().rawValue();
   currentVersion = interface.getCurrentVersion().rawValue();
 
Index: lld/MachO/Writer.cpp
===================================================================
--- lld/MachO/Writer.cpp
+++ lld/MachO/Writer.cpp
@@ -629,6 +629,25 @@
   return it == minVersion.end() ? true : platformInfo.minimum >= it->second;
 }
 
+static void updateDylibVersions() {
+  // For dylibs that had their installName updated later, updates
+  // compatibilityVersion and currentVersion from the dylib that
+  // originally had that installName.
+  DenseMap<StringRef, DylibFile*> dylibForInstallName;
+  for (InputFile *file : inputFiles)
+    if (auto *dylibFile = dyn_cast<DylibFile>(file))
+      dylibForInstallName[dylibFile->originalInstallName] = dylibFile;
+  for (InputFile *file : inputFiles) {
+    if (auto *dylibFile = dyn_cast<DylibFile>(file)) {
+      auto it = dylibForInstallName.find(dylibFile->installName);
+      if (it != dylibForInstallName.end()) {
+        dylibFile->compatibilityVersion = it->second->compatibilityVersion;
+        dylibFile->currentVersion = it->second->currentVersion;
+      }
+    }
+  }
+}
+
 template <class LP> void Writer::createLoadCommands() {
   uint8_t segIndex = 0;
   for (OutputSegment *seg : outputSegments) {
@@ -672,6 +691,8 @@
   else
     in.header->addLoadCommand(make<LCMinVersion>(config->platformInfo));
 
+  updateDylibVersions();
+
   int64_t dylibOrdinal = 1;
   DenseMap<StringRef, int64_t> ordinalForInstallName;
   for (InputFile *file : inputFiles) {
Index: lld/test/MachO/special-symbol-ld-install-name.s
===================================================================
--- lld/test/MachO/special-symbol-ld-install-name.s
+++ lld/test/MachO/special-symbol-ld-install-name.s
@@ -8,14 +8,14 @@
 ## since the specified version 11.0.0 matches the target version 11.0.0
 
 # RUN: %lld -o %t/libfoo1.dylib %t/libLDInstallName.tbd %t/foo.o -dylib -platform_version macos 11.0.0 11.0.0
-# RUN: llvm-objdump --macho --dylibs-used %t/libfoo1.dylib | FileCheck --check-prefix=CASE1 %s
+# RUN: llvm-otool -L %t/libfoo1.dylib | FileCheck --check-prefix=CASE1 %s
 # CASE1: /New (compatibility version 1.1.1, current version 5.0.0)
 
 ## Case 2: special symbol $ld$install_name does not affect the install name
 ## since the specified version 11.0.0 does not match the target version 12.0.0
 
 # RUN: %lld -o %t/libfoo2.dylib %t/libLDInstallName.tbd %t/foo.o -dylib -platform_version macos 12.0.0 12.0.0
-# RUN: llvm-objdump --macho --dylibs-used %t/libfoo2.dylib | FileCheck --check-prefix=CASE2 %s
+# RUN: llvm-otool -L %t/libfoo2.dylib | FileCheck --check-prefix=CASE2 %s
 # CASE2: /Old (compatibility version 1.1.1, current version 5.0.0)
 
 ## Check that we emit a warning for an invalid os version.
@@ -25,6 +25,17 @@
 
 # INVALID-VERSION: failed to parse os version, symbol '$ld$install_name$os11.a$/New' ignored
 
+## Case 3: If there's another library that has '/New' as its original
+## install_name, we should take current-version and compatibility-version from
+## there.
+# RUN: ld -o %t/libfoo3.dylib %t/libLDInstallNameNew.tbd %t/foo.o -dylib -platform_version macos 11.0.0 11.0.0
+# RUN: llvm-otool -L %t/libfoo3.dylib | FileCheck --check-prefix=CASE3 %s
+# RUN: ld -o %t/libfoo3.dylib %t/libLDInstallName.tbd %t/libLDInstallNameNew.tbd %t/foo.o -dylib -platform_version macos 11.0.0 11.0.0
+# RUN: llvm-otool -L %t/libfoo3.dylib | FileCheck --check-prefix=CASE3 %s
+# RUN: ld -o %t/libfoo3.dylib %t/libLDInstallNameNew.tbd %t/libLDInstallName.tbd %t/foo.o -dylib -platform_version macos 11.0.0 11.0.0
+# RUN: llvm-otool -L %t/libfoo3.dylib | FileCheck --check-prefix=CASE3 %s
+# CASE3: /New (compatibility version 4.5.6, current version 9.0.0)
+
 #--- foo.s
 .long	_xxx@GOTPCREL
 
@@ -53,3 +64,18 @@
   - archs:           [ x86_64 ]
     symbols:         [ '$ld$install_name$os11.a$/New', _xxx ]
 ...
+
+#--- libLDInstallNameNew.tbd
+--- !tapi-tbd
+tbd-version: 4
+targets: [ x86_64-macos ]
+uuids:
+  - target: x86_64-macos
+    value:  2E994C7F-3F03-3A07-879C-55690D22BEDA
+install-name: '/New'
+current-version: 9
+compatibility-version: 4.5.6
+reexported-libraries:
+  - targets:         [ x86_64-macos ]
+    libraries:       [ '@loader_path/libLDInstallName' ]
+...