diff --git a/compiler-rt/lib/gwp_asan/definitions.h b/compiler-rt/lib/gwp_asan/definitions.h
--- a/compiler-rt/lib/gwp_asan/definitions.h
+++ b/compiler-rt/lib/gwp_asan/definitions.h
@@ -9,21 +9,9 @@
 #ifndef GWP_ASAN_DEFINITIONS_H_
 #define GWP_ASAN_DEFINITIONS_H_
 
-#define TLS_INITIAL_EXEC __thread __attribute__((tls_model("initial-exec")))
+#define GWP_ASAN_TLS_INITIAL_EXEC __thread __attribute__((tls_model("initial-exec")))
 
-#ifdef LIKELY
-# undef LIKELY
-#endif // defined(LIKELY)
-#define LIKELY(X) __builtin_expect(!!(X), 1)
-
-#ifdef UNLIKELY
-# undef UNLIKELY
-#endif // defined(UNLIKELY)
-#define UNLIKELY(X) __builtin_expect(!!(X), 0)
-
-#ifdef ALWAYS_INLINE
-# undef ALWAYS_INLINE
-#endif // defined(ALWAYS_INLINE)
-#define ALWAYS_INLINE inline __attribute__((always_inline))
+#define GWP_ASAN_UNLIKELY(X) __builtin_expect(!!(X), 0)
+#define GWP_ASAN_ALWAYS_INLINE inline __attribute__((always_inline))
 
 #endif // GWP_ASAN_DEFINITIONS_H_
diff --git a/compiler-rt/lib/gwp_asan/guarded_pool_allocator.h b/compiler-rt/lib/gwp_asan/guarded_pool_allocator.h
--- a/compiler-rt/lib/gwp_asan/guarded_pool_allocator.h
+++ b/compiler-rt/lib/gwp_asan/guarded_pool_allocator.h
@@ -100,19 +100,19 @@
   void init(const options::Options &Opts);
 
   // Return whether the allocation should be randomly chosen for sampling.
-  ALWAYS_INLINE bool shouldSample() {
+  GWP_ASAN_ALWAYS_INLINE bool shouldSample() {
     // NextSampleCounter == 0 means we "should regenerate the counter".
     //                   == 1 means we "should sample this allocation".
-    if (UNLIKELY(ThreadLocals.NextSampleCounter == 0))
+    if (GWP_ASAN_UNLIKELY(ThreadLocals.NextSampleCounter == 0))
       ThreadLocals.NextSampleCounter =
           (getRandomUnsigned32() % AdjustedSampleRate) + 1;
 
-    return UNLIKELY(--ThreadLocals.NextSampleCounter == 0);
+    return GWP_ASAN_UNLIKELY(--ThreadLocals.NextSampleCounter == 0);
   }
 
   // Returns whether the provided pointer is a current sampled allocation that
   // is owned by this pool.
-  ALWAYS_INLINE bool pointerIsMine(const void *Ptr) const {
+  GWP_ASAN_ALWAYS_INLINE bool pointerIsMine(const void *Ptr) const {
     uintptr_t P = reinterpret_cast<uintptr_t>(Ptr);
     return GuardedPagePool <= P && P < GuardedPagePoolEnd;
   }
@@ -267,7 +267,7 @@
     // allocation.
     bool RecursiveGuard = false;
   };
-  static TLS_INITIAL_EXEC ThreadLocalPackedVariables ThreadLocals;
+  static GWP_ASAN_TLS_INITIAL_EXEC ThreadLocalPackedVariables ThreadLocals;
 };
 } // namespace gwp_asan
 
diff --git a/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp b/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp
--- a/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp
+++ b/compiler-rt/lib/gwp_asan/guarded_pool_allocator.cpp
@@ -527,7 +527,7 @@
     printAllocDeallocTraces(AccessPtr, Meta, Printf, PrintBacktrace);
 }
 
-TLS_INITIAL_EXEC
+GWP_ASAN_TLS_INITIAL_EXEC
 GuardedPoolAllocator::ThreadLocalPackedVariables
     GuardedPoolAllocator::ThreadLocals;
 } // namespace gwp_asan