Index: clang/lib/Sema/SemaDeclAttr.cpp
===================================================================
--- clang/lib/Sema/SemaDeclAttr.cpp
+++ clang/lib/Sema/SemaDeclAttr.cpp
@@ -7856,7 +7856,7 @@
 
 static bool isSanitizerAttributeAllowedOnGlobals(StringRef Sanitizer) {
   return Sanitizer == "address" || Sanitizer == "hwaddress" ||
-         Sanitizer == "memtag";
+         Sanitizer == "memtag" || Sanitizer == "all";
 }
 
 static void handleNoSanitizeAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
Index: clang/test/CodeGen/asan-globals.cpp
===================================================================
--- clang/test/CodeGen/asan-globals.cpp
+++ clang/test/CodeGen/asan-globals.cpp
@@ -11,6 +11,7 @@
 int dyn_init_global = global;
 int __attribute__((no_sanitize("address"))) attributed_global;
 int __attribute__((disable_sanitizer_instrumentation)) disable_instrumentation_global;
+int __attribute__((no_sanitize("all"))) no_sanitize_all_global;
 int ignorelisted_global;
 extern int __attribute__((no_sanitize("address"))) external_global;
 
@@ -34,6 +35,7 @@
 
 // GLOBS:     @{{.*}}attributed_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // GLOBS:     @{{.*}}disable_instrumentation_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
+// GLOBS:     @{{.*}}no_sanitize_all_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // GLOBS:     @{{.*}}ignorelisted_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 
 // ASAN:     @{{.*}}sectioned_global{{.*}} ={{.*}} global { i32, [28 x i8] }{{.*}}, align 32
@@ -82,6 +84,7 @@
 // IGNORELIST-SRC:     @{{.*}}dyn_init_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // IGNORELIST-SRC:     @{{.*}}attributed_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // IGNORELIST-SRC:     @{{.*}}disable_instrumentation_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
+// IGNORELIST-SRC:     @{{.*}}no_sanitize_all_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // IGNORELIST-SRC:     @{{.*}}ignorelisted_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // IGNORELIST-SRC:     @{{.*}}sectioned_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
 // IGNORELIST-SRC:     @{{.*}}__special_global{{.*}} ={{.*}} global {{.*}} no_sanitize_address
Index: clang/test/CodeGen/hwasan-globals.cpp
===================================================================
--- clang/test/CodeGen/hwasan-globals.cpp
+++ clang/test/CodeGen/hwasan-globals.cpp
@@ -13,6 +13,7 @@
 int global;
 int __attribute__((no_sanitize("hwaddress"))) attributed_global;
 int __attribute__((disable_sanitizer_instrumentation)) disable_instrumentation_global;
+int __attribute__((no_sanitize("all"))) no_sanitize_all_global;
 int ignorelisted_global;
 extern int __attribute__((no_sanitize("hwaddress"))) external_global;
 
@@ -24,6 +25,7 @@
 
 // CHECK: @{{.*}}attributed_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // CHECK: @{{.*}}disable_instrumentation_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
+// CHECK: @{{.*}}no_sanitize_all_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // CHECK: @{{.*}}ignorelisted_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // CHECK: @{{.*}}external_global{{.*}} ={{.*}}, no_sanitize_hwaddress
 // CHECK: @{{.*}}extra_global{{.*}}.hwasan{{.*}} =
@@ -34,6 +36,7 @@
 // IGNORELIST: @{{.*}}global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // IGNORELIST: @{{.*}}attributed_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // IGNORELIST: @{{.*}}disable_instrumentation_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
+// IGNORELIST: @{{.*}}no_sanitize_all_global{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // IGNORELIST: @{{.*}}ignorelisted_globa{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // IGNORELIST: @{{.*}}static_var{{.*}} ={{.*}} global {{.*}}, no_sanitize_hwaddress
 // IGNORELIST: @{{.*}} = {{.*}} c"Hello, world!\00"{{.*}}, no_sanitize_hwaddress
Index: clang/test/CodeGen/memtag-globals.cpp
===================================================================
--- clang/test/CodeGen/memtag-globals.cpp
+++ clang/test/CodeGen/memtag-globals.cpp
@@ -10,6 +10,7 @@
 int global;
 int __attribute__((no_sanitize("memtag"))) attributed_global;
 int __attribute__((disable_sanitizer_instrumentation)) disable_instrumentation_global;
+int __attribute__((no_sanitize("all"))) no_sanitize_all_global;
 int ignorelisted_global;
 extern int external_global;
 
@@ -26,6 +27,8 @@
 // CHECK-NOT: sanitize_memtag
 // CHECK:     @{{.*}}disable_instrumentation_global{{.*}} =
 // CHECK-NOT: sanitize_memtag
+// CHECK:     @{{.*}}no_sanitize_all_global{{.*}} =
+// CHECK-NOT: sanitize_memtag
 // CHECK:     @{{.*}}ignorelisted_global{{.*}} =
 // CHECK-NOT: sanitize_memtag
 
@@ -41,6 +44,8 @@
 // IGNORELIST-NOT: sanitize_memtag
 // IGNORELIST:     @{{.*}}disable_instrumentation_global{{.*}} =
 // IGNORELIST-NOT: sanitize_memtag
+// IGNORELIST:     @{{.*}}no_sanitize_all_global{{.*}} =
+// IGNORELIST-NOT: sanitize_memtag
 // IGNORELIST:     @{{.*}}ignorelisted_globa{{.*}} =
 // IGNORELIST-NOT: sanitize_memtag
 // IGNORELIST:     @{{.*}}static_var{{.*}} =