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diff --git a/gnu/llvm/unittests/IR/VerifierTest.cpp b/gnu/llvm/unittests/IR/VerifierTest.cpp
new file mode 100644
index 00000000000..4e94b4375f9
--- /dev/null
+++ b/gnu/llvm/unittests/IR/VerifierTest.cpp
@@ -0,0 +1,111 @@
+//===- llvm/unittest/IR/VerifierTest.cpp - Verifier unit tests ------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/IR/Verifier.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GlobalAlias.h"
+#include "llvm/IR/GlobalVariable.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "gtest/gtest.h"
+
+namespace llvm {
+namespace {
+
+TEST(VerifierTest, Branch_i1) {
+  LLVMContext &C = getGlobalContext();
+  Module M("M", C);
+  FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), /*isVarArg=*/false);
+  Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy));
+  BasicBlock *Entry = BasicBlock::Create(C, "entry", F);
+  BasicBlock *Exit = BasicBlock::Create(C, "exit", F);
+  ReturnInst::Create(C, Exit);
+
+  // To avoid triggering an assertion in BranchInst::Create, we first create
+  // a branch with an 'i1' condition ...
+
+  Constant *False = ConstantInt::getFalse(C);
+  BranchInst *BI = BranchInst::Create(Exit, Exit, False, Entry);
+
+  // ... then use setOperand to redirect it to a value of different type.
+
+  Constant *Zero32 = ConstantInt::get(IntegerType::get(C, 32), 0);
+  BI->setOperand(0, Zero32);
+
+  EXPECT_TRUE(verifyFunction(*F));
+}
+
+TEST(VerifierTest, InvalidRetAttribute) {
+  LLVMContext &C = getGlobalContext();
+  Module M("M", C);
+  FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false);
+  Function *F = cast<Function>(M.getOrInsertFunction("foo", FTy));
+  AttributeSet AS = F->getAttributes();
+  F->setAttributes(AS.addAttribute(C, AttributeSet::ReturnIndex,
+                                   Attribute::UWTable));
+
+  std::string Error;
+  raw_string_ostream ErrorOS(Error);
+  EXPECT_TRUE(verifyModule(M, &ErrorOS));
+  EXPECT_TRUE(StringRef(ErrorOS.str()).startswith(
+      "Attribute 'uwtable' only applies to functions!"));
+}
+
+TEST(VerifierTest, CrossModuleRef) {
+  LLVMContext &C = getGlobalContext();
+  Module M1("M1", C);
+  Module M2("M2", C);
+  Module M3("M2", C);
+  FunctionType *FTy = FunctionType::get(Type::getInt32Ty(C), /*isVarArg=*/false);
+  Function *F1 = cast<Function>(M1.getOrInsertFunction("foo1", FTy));
+  Function *F2 = cast<Function>(M2.getOrInsertFunction("foo2", FTy));
+  Function *F3 = cast<Function>(M3.getOrInsertFunction("foo3", FTy));
+
+  BasicBlock *Entry1 = BasicBlock::Create(C, "entry", F1);
+  BasicBlock *Entry3 = BasicBlock::Create(C, "entry", F3);
+
+  // BAD: Referencing function in another module
+  CallInst::Create(F2,"call",Entry1);
+
+  // BAD: Referencing personality routine in another module
+  F3->setPersonalityFn(F2);
+
+  // Fill in the body
+  Constant *ConstZero = ConstantInt::get(Type::getInt32Ty(C), 0);
+  ReturnInst::Create(C, ConstZero, Entry1);
+  ReturnInst::Create(C, ConstZero, Entry3);
+
+  std::string Error;
+  raw_string_ostream ErrorOS(Error);
+  EXPECT_FALSE(verifyModule(M2, &ErrorOS));
+  EXPECT_TRUE(verifyModule(M1, &ErrorOS));
+  EXPECT_TRUE(StringRef(ErrorOS.str()).equals(
+      "Referencing function in another module!\n"
+      "  %call = call i32 @foo2()\n"
+      "; ModuleID = 'M1'\n"
+      "i32 ()* @foo2\n"
+      "; ModuleID = 'M2'\n"));
+
+  Error.clear();
+  EXPECT_TRUE(verifyModule(M3, &ErrorOS));
+  EXPECT_TRUE(StringRef(ErrorOS.str()).startswith(
+      "Referencing personality function in another module!"));
+
+  // Erase bad methods to avoid triggering an assertion failure on destruction
+  F1->eraseFromParent();
+  F3->eraseFromParent();
+}
+
+
+
+}
+}