Change raw_fd_ostream to take flags as an optional bitmask

[oota-llvm.git] / include / llvm / Support / Compiler.h

diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index 06be685f971884fb8bb1d47f0b728d8d65d630e7..853324611bbe757b40356367dfa66531793fe60c 100644 (file)
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -17,12 +17,23 @@
 
 // The VISIBILITY_HIDDEN macro, used for marking classes with the GCC-specific
 // visibility("hidden") attribute.
-#if __GNUC__ >= 4
+#if (__GNUC__ >= 4) && !defined(__MINGW32__) && !defined(__CYGWIN__)
 #define VISIBILITY_HIDDEN __attribute__ ((visibility("hidden")))
 #else
 #define VISIBILITY_HIDDEN
 #endif
 
+#if (__GNUC__ >= 4)
+#define ATTRIBUTE_USED __attribute__((__used__))
+#else
+#define ATTRIBUTE_USED
+#endif
+
+#if (__GNUC__ >= 4)
+#define BUILTIN_EXPECT(EXPR, VALUE) __builtin_expect((EXPR), (VALUE))
+#else
+#define BUILTIN_EXPECT(EXPR, VALUE) (EXPR)
+#endif
 
 // C++ doesn't support 'extern template' of template specializations.  GCC does,
 // but requires __extension__ before it.  In the header, use this:
@@ -45,4 +56,10 @@
 #define DISABLE_INLINE
 #endif
 
+#ifdef __GNUC__
+#define NORETURN __attribute__((noreturn))
+#else
+#define NORETURN
+#endif
+
 #endif