1 files changed, 55 insertions, 0 deletions
diff --git a/include/llvm/LinkAllVMCore.h b/include/llvm/LinkAllVMCore.h
new file mode 100644
index 0000000000000..4c428a00631c2
--- /dev/null
+++ b/include/llvm/LinkAllVMCore.h
@@ -0,0 +1,55 @@
+//===- LinkAllVMCore.h - Reference All VMCore Code --------------*- C++ -*-===//
+//
+//                      The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file pulls in all the object modules of the VMCore library so
+// that tools like llc, opt, and lli can ensure they are linked with all symbols
+// from libVMCore.a It should only be used from a tool's main program.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LINKALLVMCORE_H
+#define LLVM_LINKALLVMCORE_H
+
+#include "llvm/Module.h"
+#include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/InlineAsm.h"
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/System/Alarm.h"
+#include "llvm/System/DynamicLibrary.h"
+#include "llvm/System/Memory.h"
+#include "llvm/System/Mutex.h"
+#include "llvm/System/Path.h"
+#include "llvm/System/Process.h"
+#include "llvm/System/Program.h"
+#include "llvm/System/Signals.h"
+#include "llvm/System/TimeValue.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/Mangler.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/SlowOperationInformer.h"
+
+namespace {
+  struct ForceVMCoreLinking {
+    ForceVMCoreLinking() {
+      // We must reference VMCore in such a way that compilers will not
+      // delete it all as dead code, even with whole program optimization,
+      // yet is effectively a NO-OP. As the compiler isn't smart enough
+      // to know that getenv() never returns -1, this will do the job.
+      if (std::getenv("bar") != (char*) -1)
+        return;
+      llvm::Module* M = new llvm::Module("");
+      (void)new llvm::UnreachableInst();
+      (void)    llvm::createVerifierPass(); 
+      (void) new llvm::Mangler(*M,"");
+    }
+  } ForceVMCoreLinking;
+}
+
+#endif