Add GTL_ASSUME macro (unused for now).

greg7mdp · Jun 4, 2023 · 4caee2d · 4caee2d
1 parent 86001d1
commit 4caee2d
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/include/gtl/gtl_config.hpp b/include/gtl/gtl_config.hpp
@@ -233,6 +233,16 @@
     #define GTL_ATTRIBUTE_NO_UNIQUE_ADDRESS
 #endif
 
+#if GTL_HAVE_ATTRIBUTE(assume)
+    #define GTL_ASSUME(expr) [[assume(expr)]]
+#elif defined(__clang__)
+    #define GTL_ASSUME(expr) __builtin_assume(expr)
+#elif defined(_MSC_VER) || defined(__ICC))
+    #define GTL_ASSUME(expr) __assume(expr)
+#else
+    #define GTL_ASSUME(expr)
+#endif
+
 // ----------------------------------------------------------------------
 // Figure out SSE support
 // ----------------------------------------------------------------------