diff --git a/compiler-rt/lib/lsan/lsan_allocator.h b/compiler-rt/lib/lsan/lsan_allocator.h
--- a/compiler-rt/lib/lsan/lsan_allocator.h
+++ b/compiler-rt/lib/lsan/lsan_allocator.h
@@ -49,8 +49,7 @@
   u32 stack_trace_id;
 };
 
-#if defined(__mips64) || defined(__aarch64__) || defined(__i386__) || \
-    defined(__arm__)
+#if !SANITIZER_CAN_USE_ALLOCATOR64
 template <typename AddressSpaceViewTy>
 struct AP32 {
   static const uptr kSpaceBeg = 0;
@@ -65,7 +64,7 @@
 template <typename AddressSpaceView>
 using PrimaryAllocatorASVT = SizeClassAllocator32<AP32<AddressSpaceView>>;
 using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
-#elif defined(__x86_64__) || defined(__powerpc64__) || defined(__s390x__)
+#else  // SANITIZER_CAN_USE_ALLOCATOR64
 # if SANITIZER_FUCHSIA
 const uptr kAllocatorSpace = ~(uptr)0;
 const uptr kAllocatorSize  =  0x40000000000ULL;  // 4T.
@@ -93,7 +92,7 @@
 template <typename AddressSpaceView>
 using PrimaryAllocatorASVT = SizeClassAllocator64<AP64<AddressSpaceView>>;
 using PrimaryAllocator = PrimaryAllocatorASVT<LocalAddressSpaceView>;
-#endif
+#endif  // SANITIZER_CAN_USE_ALLOCATOR64
 
 template <typename AddressSpaceView>
 using AllocatorASVT = CombinedAllocator<PrimaryAllocatorASVT<AddressSpaceView>>;