From 401285b2f16f3eb098a9306e59b803f4ae9891bc Mon Sep 17 00:00:00 2001
From: Esun Kim <veblush@google.com>
Date: Tue, 30 Jul 2019 20:02:28 -0700
Subject: Use UPB_LIKELY only when GNUC

---
 upb/port_def.inc | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'upb/port_def.inc')

diff --git a/upb/port_def.inc b/upb/port_def.inc
index 0650920..3e0a7f4 100644
--- a/upb/port_def.inc
+++ b/upb/port_def.inc
@@ -52,7 +52,13 @@
 #endif
 
 /* Hints to the compiler about likely/unlikely branches. */
+#ifdef __GNUC__
 #define UPB_LIKELY(x) __builtin_expect((x),1)
+#define UPB_UNLIKELY(x) __builtin_expect((x),0)
+#else
+#define UPB_LIKELY(x) (x)
+#define UPB_UNLIKELY(x) (x)
+#endif
 
 /* Define UPB_BIG_ENDIAN manually if you're on big endian and your compiler
  * doesn't provide these preprocessor symbols. */
-- 
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