Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 51 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/LinkAllIR.h b/clang-r353983/include/llvm/LinkAllIR.h
new file mode 100644
index 00000000..4b0aabee
--- /dev/null
+++ b/clang-r353983/include/llvm/LinkAllIR.h
@@ -0,0 +1,51 @@
+//===----- LinkAllIR.h - Reference All VMCore Code --------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// 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_LINKALLIR_H
+#define LLVM_LINKALLIR_H
+
+#include "llvm/BinaryFormat/Dwarf.h"
+#include "llvm/IR/InlineAsm.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Memory.h"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/Signals.h"
+#include <cstdlib>
+
+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::LLVMContext Context;
+      (void)new llvm::Module("", Context);
+      (void)new llvm::UnreachableInst(Context);
+      (void)    llvm::createVerifierPass();
+    }
+  } ForceVMCoreLinking;
+}
+
+#endif