diff --git a/include/swift/Remote/InProcessMemoryReader.h b/include/swift/Remote/InProcessMemoryReader.h
index 2f6b5b535a4..c5147e56db9 100644
--- a/include/swift/Remote/InProcessMemoryReader.h
+++ b/include/swift/Remote/InProcessMemoryReader.h
@@ -38,7 +38,7 @@ class InProcessMemoryReader final : public MemoryReader {
 #else
     auto applePlatform = false;
 #endif
-#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV))
+#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
     auto iosDerivedPlatform = true;
 #else
     auto iosDerivedPlatform = false;
@@ -67,7 +67,7 @@ class InProcessMemoryReader final : public MemoryReader {
     case DLQ_GetObjCReservedLowBits: {
       auto result = static_cast<uint8_t *>(outBuffer);
       if (applePlatform && !iosDerivedPlatform && (sizeof(void *) == 8)) {
-        // Obj-C reserves low bit on 64-bit macOS only.
+        // Obj-C reserves low bit on 64-bit Intel macOS only.
         // Other Apple platforms don't reserve this bit (even when
         // running on x86_64-based simulators).
         *result = 1;
diff --git a/include/swift/SwiftRemoteMirror/SwiftRemoteMirrorLegacyInterop.h b/include/swift/SwiftRemoteMirror/SwiftRemoteMirrorLegacyInterop.h
index e97d686e45d..0b07ec76333 100644
--- a/include/swift/SwiftRemoteMirror/SwiftRemoteMirrorLegacyInterop.h
+++ b/include/swift/SwiftRemoteMirror/SwiftRemoteMirrorLegacyInterop.h
@@ -585,7 +585,7 @@ swift_reflection_interop_minimalDataLayoutQueryFunction8(
 #else
     int applePlatform = 0;
 #endif
-#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV))
+#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
     int iosDerivedPlatform = 1;
 #else
     int iosDerivedPlatform = 0;
diff --git a/stdlib/public/SwiftRemoteMirror/SwiftRemoteMirror.cpp b/stdlib/public/SwiftRemoteMirror/SwiftRemoteMirror.cpp
index 8c231ba22f0..7c7cbfa2462 100644
--- a/stdlib/public/SwiftRemoteMirror/SwiftRemoteMirror.cpp
+++ b/stdlib/public/SwiftRemoteMirror/SwiftRemoteMirror.cpp
@@ -71,7 +71,7 @@ static int minimalDataLayoutQueryFunction(void *ReaderContext,
 #else
     auto applePlatform = false;
 #endif
-#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV))
+#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
     auto iosDerivedPlatform = true;
 #else
     auto iosDerivedPlatform = false;
diff --git a/stdlib/tools/swift-reflection-test/swift-reflection-test.c b/stdlib/tools/swift-reflection-test/swift-reflection-test.c
index 4c2d94c5aec..4e3d143174c 100644
--- a/stdlib/tools/swift-reflection-test/swift-reflection-test.c
+++ b/stdlib/tools/swift-reflection-test/swift-reflection-test.c
@@ -147,7 +147,7 @@ static int PipeMemoryReader_queryDataLayout(void *Context,
 #else
   int applePlatform = 0;
 #endif
-#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV))
+#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
   int iosDerivedPlatform = 1;
 #else
   int iosDerivedPlatform = 0;
diff --git a/tools/swift-reflection-dump/swift-reflection-dump.cpp b/tools/swift-reflection-dump/swift-reflection-dump.cpp
index 999f467b06d..c06ec35de5f 100644
--- a/tools/swift-reflection-dump/swift-reflection-dump.cpp
+++ b/tools/swift-reflection-dump/swift-reflection-dump.cpp
@@ -458,7 +458,7 @@ public:
 #else
     auto applePlatform = false;
 #endif
-#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV))
+#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
     auto iosDerivedPlatform = true;
 #else
     auto iosDerivedPlatform = false;
diff --git a/tools/swift-reflection-fuzzer/swift-reflection-fuzzer.cpp b/tools/swift-reflection-fuzzer/swift-reflection-fuzzer.cpp
index 80aaf7d4ca6..a47ac394e35 100644
--- a/tools/swift-reflection-fuzzer/swift-reflection-fuzzer.cpp
+++ b/tools/swift-reflection-fuzzer/swift-reflection-fuzzer.cpp
@@ -61,7 +61,7 @@ public:
 #else
     auto applePlatform = false;
 #endif
-#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV))
+#if defined(__APPLE__) && __APPLE__ && ((defined(TARGET_OS_IOS) && TARGET_OS_IOS) || (defined(TARGET_OS_IOS) && TARGET_OS_WATCH) || (defined(TARGET_OS_TV) && TARGET_OS_TV) || defined(__arm64__))
     auto iosDerivedPlatform = true;
 #else
     auto iosDerivedPlatform = false;