New unit test for the cloning module, which so far only covers cloning of

instructions' optimization flags.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82934 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 87 insertions, 0 deletions

diff --git a/unittests/Transforms/Utils/Cloning.cpp b/unittests/Transforms/Utils/Cloning.cpp
new file mode 100644
index 0000000000..7c93f6f583
--- /dev/null
+++ b/unittests/Transforms/Utils/Cloning.cpp
@@ -0,0 +1,87 @@
+//===- Cloning.cpp - Unit tests for the Cloner ----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "gtest/gtest.h"
+#include "llvm/Argument.h"
+#include "llvm/Instructions.h"
+
+using namespace llvm;
+
+TEST(CloneInstruction, OverflowBits) {
+  LLVMContext context;
+  Value *V = new Argument(Type::getInt32Ty(context));
+
+  BinaryOperator *Add = BinaryOperator::Create(Instruction::Add, V, V);
+  BinaryOperator *Sub = BinaryOperator::Create(Instruction::Sub, V, V);
+  BinaryOperator *Mul = BinaryOperator::Create(Instruction::Mul, V, V);
+
+  EXPECT_FALSE(Add->clone()->hasNoUnsignedWrap());
+  EXPECT_FALSE(Add->clone()->hasNoSignedWrap());
+  EXPECT_FALSE(Sub->clone()->hasNoUnsignedWrap());
+  EXPECT_FALSE(Sub->clone()->hasNoSignedWrap());
+  EXPECT_FALSE(Mul->clone()->hasNoUnsignedWrap());
+  EXPECT_FALSE(Mul->clone()->hasNoSignedWrap());
+
+  Add->setHasNoUnsignedWrap();
+  Sub->setHasNoUnsignedWrap();
+  Mul->setHasNoUnsignedWrap();
+
+  EXPECT_TRUE(Add->clone()->hasNoUnsignedWrap());
+  EXPECT_FALSE(Add->clone()->hasNoSignedWrap());
+  EXPECT_TRUE(Sub->clone()->hasNoUnsignedWrap());
+  EXPECT_FALSE(Sub->clone()->hasNoSignedWrap());
+  EXPECT_TRUE(Mul->clone()->hasNoUnsignedWrap());
+  EXPECT_FALSE(Mul->clone()->hasNoSignedWrap());
+
+  Add->setHasNoSignedWrap();
+  Sub->setHasNoSignedWrap();
+  Mul->setHasNoSignedWrap();
+
+  EXPECT_TRUE(Add->clone()->hasNoUnsignedWrap());
+  EXPECT_TRUE(Add->clone()->hasNoSignedWrap());
+  EXPECT_TRUE(Sub->clone()->hasNoUnsignedWrap());
+  EXPECT_TRUE(Sub->clone()->hasNoSignedWrap());
+  EXPECT_TRUE(Mul->clone()->hasNoUnsignedWrap());
+  EXPECT_TRUE(Mul->clone()->hasNoSignedWrap());
+
+  Add->setHasNoUnsignedWrap(false);
+  Sub->setHasNoUnsignedWrap(false);
+  Mul->setHasNoUnsignedWrap(false);
+
+  EXPECT_FALSE(Add->clone()->hasNoUnsignedWrap());
+  EXPECT_TRUE(Add->clone()->hasNoSignedWrap());
+  EXPECT_FALSE(Sub->clone()->hasNoUnsignedWrap());
+  EXPECT_TRUE(Sub->clone()->hasNoSignedWrap());
+  EXPECT_FALSE(Mul->clone()->hasNoUnsignedWrap());
+  EXPECT_TRUE(Mul->clone()->hasNoSignedWrap());
+}
+
+TEST(CloneInstruction, Inbounds) {
+  LLVMContext context;
+  Value *V = new Argument(Type::getInt32Ty(context)->getPointerTo());
+  Constant *Z = Constant::getNullValue(Type::getInt32Ty(context));
+  std::vector<Value *> ops;
+  ops.push_back(Z);
+  GetElementPtrInst *GEP = GetElementPtrInst::Create(V, ops.begin(), ops.end());
+  EXPECT_FALSE(GEP->clone()->isInBounds());
+
+  GEP->setIsInBounds();
+  EXPECT_TRUE(GEP->clone()->isInBounds());
+}
+
+TEST(CloneInstruction, Exact) {
+  LLVMContext context;
+  Value *V = new Argument(Type::getInt32Ty(context));
+
+  BinaryOperator *SDiv = BinaryOperator::Create(Instruction::SDiv, V, V);
+  EXPECT_FALSE(SDiv->clone()->isExact());
+
+  SDiv->setIsExact(true);
+  EXPECT_TRUE(SDiv->clone()->isExact());
+}