Import LLVM r74383.

1 files changed, 82 insertions, 0 deletions

diff --git a/include/llvm/CompilerDriver/ForceLinkage.h b/include/llvm/CompilerDriver/ForceLinkage.h
new file mode 100644
index 0000000..58ea167
--- /dev/null
+++ b/include/llvm/CompilerDriver/ForceLinkage.h
@@ -0,0 +1,82 @@
+//===--- ForceLinkage.h - The LLVM Compiler Driver --------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open
+// Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  A bit of preprocessor magic to force references to static libraries. Needed
+//  because plugin initialization is done via static variables.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_INCLUDE_COMPILER_DRIVER_FORCE_LINKAGE_H
+#define LLVM_INCLUDE_COMPILER_DRIVER_FORCE_LINKAGE_H
+
+#include "llvm/CompilerDriver/ForceLinkageMacros.h"
+
+namespace llvmc {
+
+// Declare all ForceLinkage$(PluginName) functions.
+
+#ifdef LLVMC_BUILTIN_PLUGIN_1
+      LLVMC_FORCE_LINKAGE_DECL(LLVMC_BUILTIN_PLUGIN_1);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_2
+      LLVMC_FORCE_LINKAGE_DECL(LLVMC_BUILTIN_PLUGIN_2);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_3
+      LLVMC_FORCE_LINKAGE_DECL(LLVMC_BUILTIN_PLUGIN_3);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_4
+      LLVMC_FORCE_LINKAGE_DECL(LLVMC_BUILTIN_PLUGIN_4);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_5
+      LLVMC_FORCE_LINKAGE_DECL(LLVMC_BUILTIN_PLUGIN_5);
+#endif
+
+namespace force_linkage {
+
+  struct LinkageForcer {
+
+    LinkageForcer() {
+
+// Call all ForceLinkage$(PluginName) functions.
+#ifdef LLVMC_BUILTIN_PLUGIN_1
+      LLVMC_FORCE_LINKAGE_CALL(LLVMC_BUILTIN_PLUGIN_1);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_2
+      LLVMC_FORCE_LINKAGE_CALL(LLVMC_BUILTIN_PLUGIN_2);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_3
+      LLVMC_FORCE_LINKAGE_CALL(LLVMC_BUILTIN_PLUGIN_3);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_4
+      LLVMC_FORCE_LINKAGE_CALL(LLVMC_BUILTIN_PLUGIN_4);
+#endif
+
+#ifdef LLVMC_BUILTIN_PLUGIN_5
+      LLVMC_FORCE_LINKAGE_CALL(LLVMC_BUILTIN_PLUGIN_5);
+#endif
+
+    }
+  };
+} // End namespace force_linkage.
+
+// The only externally used bit.
+void ForceLinkage() {
+  force_linkage::LinkageForcer dummy;
+}
+
+} // End namespace llvmc.
+
+#endif // LLVM_INCLUDE_COMPILER_DRIVER_FORCE_LINKAGE_H