add an ALWAYS_INLINE macro, which does the obvious thing.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91416 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index da31f9862885fea54420e484bd4e0350ecd05d64..8861a2095409d1de678c463da6ab47d45d5d5658 100644 (file)
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -70,6 +70,16 @@
 #define DISABLE_INLINE
 #endif
 
+// ALWAYS_INLINE - On compilers where we have a directive to do so, mark a
+// method "always inline" because it is performance sensitive.
+#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
+#define ALWAYS_INLINE __attribute__((always_inline))
+#else
+// TODO: No idea how to do this with MSVC.
+#define ALWAYS_INLINE
+#endif
+
+
 #ifdef __GNUC__
 #define NORETURN __attribute__((noreturn))
 #elif defined(_MSC_VER)