Index: clang/lib/Driver/ToolChains/Darwin.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Darwin.cpp
+++ clang/lib/Driver/ToolChains/Darwin.cpp
@@ -1655,9 +1655,12 @@
     Result.setEnvironment(Environment, OSVersion, SDKInfo);
     return Result;
   }
-  static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform,
-                                           Arg *A) {
-    return DarwinPlatform(OSVersionArg, Platform, A);
+  static DarwinPlatform createOSVersionArg(DarwinPlatformKind Platform, Arg *A,
+                                           bool IsSimulator) {
+    DarwinPlatform Result{OSVersionArg, Platform, A};
+    if (IsSimulator)
+      Result.Environment = DarwinEnvironmentKind::Simulator;
+    return Result;
   }
   static DarwinPlatform createDeploymentTargetEnv(DarwinPlatformKind Platform,
                                                   StringRef EnvVarName,
@@ -1752,23 +1755,33 @@
                          : TvOSVersion ? TvOSVersion : WatchOSVersion)
                  ->getAsString(Args);
     }
-    return DarwinPlatform::createOSVersionArg(Darwin::MacOS, macOSVersion);
+    return DarwinPlatform::createOSVersionArg(Darwin::MacOS, macOSVersion,
+                                              /*IsImulator=*/false);
   } else if (iOSVersion) {
     if (TvOSVersion || WatchOSVersion) {
       TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
           << iOSVersion->getAsString(Args)
           << (TvOSVersion ? TvOSVersion : WatchOSVersion)->getAsString(Args);
     }
-    return DarwinPlatform::createOSVersionArg(Darwin::IPhoneOS, iOSVersion);
+    return DarwinPlatform::createOSVersionArg(
+        Darwin::IPhoneOS, iOSVersion,
+        iOSVersion->getOption().getID() ==
+            options::OPT_mios_simulator_version_min_EQ);
   } else if (TvOSVersion) {
     if (WatchOSVersion) {
       TheDriver.Diag(diag::err_drv_argument_not_allowed_with)
           << TvOSVersion->getAsString(Args)
           << WatchOSVersion->getAsString(Args);
     }
-    return DarwinPlatform::createOSVersionArg(Darwin::TvOS, TvOSVersion);
+    return DarwinPlatform::createOSVersionArg(
+        Darwin::TvOS, TvOSVersion,
+        TvOSVersion->getOption().getID() ==
+            options::OPT_mtvos_simulator_version_min_EQ);
   } else if (WatchOSVersion)
-    return DarwinPlatform::createOSVersionArg(Darwin::WatchOS, WatchOSVersion);
+    return DarwinPlatform::createOSVersionArg(
+        Darwin::WatchOS, WatchOSVersion,
+        WatchOSVersion->getOption().getID() ==
+            options::OPT_mwatchos_simulator_version_min_EQ);
   return None;
 }
 
@@ -2228,6 +2241,7 @@
 
   DarwinEnvironmentKind Environment = OSTarget->getEnvironment();
   // Recognize iOS targets with an x86 architecture as the iOS simulator.
+  // FIXME: Remove this.
   if (Environment == NativeEnvironment && Platform != MacOS &&
       Platform != DriverKit && OSTarget->canInferSimulatorFromArch() &&
       getTriple().isX86())
Index: clang/test/Driver/darwin-ld.c
===================================================================
--- clang/test/Driver/darwin-ld.c
+++ clang/test/Driver/darwin-ld.c
@@ -67,6 +67,10 @@
 // LINK_IOSSIM_3_0-NOT: -lbundle1.o
 // LINK_IOSSIM_3_0: -lSystem
 
+// RUN: %clang -target arm64-apple-darwin -fuse-ld= -mlinker-version=700 -### -arch arm64 -mios-simulator-version-min=15.0 %t.o 2>&1 | FileCheck -check-prefix=LINK_IOSSIM_ARM64 %s
+
+// LINK_IOSSIM_ARM64: "-platform_version" "ios-simulator" "15.0.0" "15.0.0"
+
 // RUN: %clang -target i386-apple-darwin9 -### -fpie %t.o 2> %t.log
 // RUN: FileCheck -check-prefix=LINK_EXPLICIT_PIE %s < %t.log
 //
Index: clang/test/Driver/darwin-version.c
===================================================================
--- clang/test/Driver/darwin-version.c
+++ clang/test/Driver/darwin-version.c
@@ -48,6 +48,10 @@
 // RUN: FileCheck --check-prefix=CHECK-VERSION-IOS10 %s
 // CHECK-VERSION-IOS10: x86_64-apple-ios11.0.0-simulator
 
+// RUN: %clang -target arm64-apple-darwin -mios-simulator-version-min=11.0 -c -### %s 2>&1 | \
+// RUN: FileCheck --check-prefix=CHECK-VERSION-IOS10-ARM64 %s
+// CHECK-VERSION-IOS10-ARM64: arm64-apple-ios11.0.0-simulator
+
 // RUN: %clang -target arm64-apple-ios11.1 -c -### %s 2>&1 | \
 // RUN: FileCheck --check-prefix=CHECK-VERSION-IOS11 %s
 // CHECK-VERSION-IOS11: arm64-apple-ios11.1.0