Index: compiler-rt/lib/tsan/rtl/tsan_platform.h
===================================================================
--- compiler-rt/lib/tsan/rtl/tsan_platform.h
+++ compiler-rt/lib/tsan/rtl/tsan_platform.h
@@ -25,7 +25,8 @@
 
 #if !SANITIZER_GO
 
-#if defined(__x86_64__)
+#if defined(__x86_64__) || (SANITIZER_MAC && \
+    !(SANITIZER_IOS && !SANITIZER_IOSSIM))
 /*
 C/C++ on linux/x86_64 and freebsd/x86_64
 0000 0000 1000 - 0080 0000 0000: main binary and/or MAP_32BIT mappings (512GB)
Index: compiler-rt/lib/tsan/rtl/tsan_platform_posix.cpp
===================================================================
--- compiler-rt/lib/tsan/rtl/tsan_platform_posix.cpp
+++ compiler-rt/lib/tsan/rtl/tsan_platform_posix.cpp
@@ -99,7 +99,8 @@
     Die();
   }
 
-#if defined(__aarch64__) && defined(__APPLE__)
+#if defined(__aarch64__) && SANITIZER_MAC && \
+    (SANITIZER_IOS && !SANITIZER_IOSSIM)
   ProtectRange(HeapMemEnd(), ShadowBeg());
   ProtectRange(ShadowEnd(), MetaShadowBeg());
   ProtectRange(MetaShadowEnd(), TraceMemBeg());