Common/Compiler: Introduced XR_ASSUME() macro.

There is the only one "assume" usage yet, but the macro is useful for future optimization.
OpenXRay · May 27, 2016 · 817f2a7 · 817f2a7
1 parent da996ce
commit 817f2a7
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/Common/Compiler.inl b/src/Common/Compiler.inl
@@ -14,6 +14,12 @@
 #define XR_IMPORT __declspec(dllimport)
 #endif
 
+#if defined(__GNUC__)
+#define XR_ASSUME(expr)  if (expr){} else __builtin_unreachable()
+#elif defined(_MSC_VER)
+#define XR_ASSUME(expr) __assume(expr)
+#endif
+
 #if defined(__GNUC__)
 #define NO_INLINE __attribute__((noinline))
 #define FORCE_INLINE __attribute__((always_inline)) inline