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-rw-r--r--include/llvm/Support/Compiler.h17
1 files changed, 13 insertions, 4 deletions
diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index 881a0fe..b2ce76d 100644
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -15,12 +15,21 @@
#ifndef LLVM_SUPPORT_COMPILER_H
#define LLVM_SUPPORT_COMPILER_H
-// The VISIBILITY_HIDDEN macro, used for marking classes with the GCC-specific
-// visibility("hidden") attribute.
+/// LLVM_LIBRARY_VISIBILITY - If a class marked with this attribute is linked
+/// into a shared library, then the class should be private to the library and
+/// not accessible from outside it. Can also be used to mark variables and
+/// functions, making them private to any shared library they are linked into.
+
+/// LLVM_GLOBAL_VISIBILITY - If a class marked with this attribute is linked
+/// into a shared library, then the class will be accessible from outside the
+/// the library. Can also be used to mark variables and functions, making them
+/// accessible from outside any shared library they are linked into.
#if (__GNUC__ >= 4) && !defined(__MINGW32__) && !defined(__CYGWIN__)
-#define VISIBILITY_HIDDEN __attribute__ ((visibility("hidden")))
+#define LLVM_LIBRARY_VISIBILITY __attribute__ ((visibility("hidden")))
+#define LLVM_GLOBAL_VISIBILITY __attribute__ ((visibility("default")))
#else
-#define VISIBILITY_HIDDEN
+#define LLVM_LIBRARY_VISIBILITY
+#define LLVM_GLOBAL_VISIBILITY
#endif
#if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
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