unittests/Transforms/Utils/Cloning.cpp

   1 //===- Cloning.cpp - Unit tests for the Cloner ----------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "gtest/gtest.h"
  11 #include "llvm/Argument.h"
  12 #include "llvm/Instructions.h"
  13 #include "llvm/LLVMContext.h"
  14
  15 using namespace llvm;
  16
  17 TEST(CloneInstruction, OverflowBits) {
  18   LLVMContext context;
  19   Value *V = new Argument(Type::getInt32Ty(context));
  20
  21   BinaryOperator *Add = BinaryOperator::Create(Instruction::Add, V, V);
  22   BinaryOperator *Sub = BinaryOperator::Create(Instruction::Sub, V, V);
  23   BinaryOperator *Mul = BinaryOperator::Create(Instruction::Mul, V, V);
  24
  25   EXPECT_FALSE(Add->clone()->hasNoUnsignedWrap());
  26   EXPECT_FALSE(Add->clone()->hasNoSignedWrap());
  27   EXPECT_FALSE(Sub->clone()->hasNoUnsignedWrap());
  28   EXPECT_FALSE(Sub->clone()->hasNoSignedWrap());
  29   EXPECT_FALSE(Mul->clone()->hasNoUnsignedWrap());
  30   EXPECT_FALSE(Mul->clone()->hasNoSignedWrap());
  31
  32   Add->setHasNoUnsignedWrap();
  33   Sub->setHasNoUnsignedWrap();
  34   Mul->setHasNoUnsignedWrap();
  35
  36   EXPECT_TRUE(Add->clone()->hasNoUnsignedWrap());
  37   EXPECT_FALSE(Add->clone()->hasNoSignedWrap());
  38   EXPECT_TRUE(Sub->clone()->hasNoUnsignedWrap());
  39   EXPECT_FALSE(Sub->clone()->hasNoSignedWrap());
  40   EXPECT_TRUE(Mul->clone()->hasNoUnsignedWrap());
  41   EXPECT_FALSE(Mul->clone()->hasNoSignedWrap());
  42
  43   Add->setHasNoSignedWrap();
  44   Sub->setHasNoSignedWrap();
  45   Mul->setHasNoSignedWrap();
  46
  47   EXPECT_TRUE(Add->clone()->hasNoUnsignedWrap());
  48   EXPECT_TRUE(Add->clone()->hasNoSignedWrap());
  49   EXPECT_TRUE(Sub->clone()->hasNoUnsignedWrap());
  50   EXPECT_TRUE(Sub->clone()->hasNoSignedWrap());
  51   EXPECT_TRUE(Mul->clone()->hasNoUnsignedWrap());
  52   EXPECT_TRUE(Mul->clone()->hasNoSignedWrap());
  53
  54   Add->setHasNoUnsignedWrap(false);
  55   Sub->setHasNoUnsignedWrap(false);
  56   Mul->setHasNoUnsignedWrap(false);
  57
  58   EXPECT_FALSE(Add->clone()->hasNoUnsignedWrap());
  59   EXPECT_TRUE(Add->clone()->hasNoSignedWrap());
  60   EXPECT_FALSE(Sub->clone()->hasNoUnsignedWrap());
  61   EXPECT_TRUE(Sub->clone()->hasNoSignedWrap());
  62   EXPECT_FALSE(Mul->clone()->hasNoUnsignedWrap());
  63   EXPECT_TRUE(Mul->clone()->hasNoSignedWrap());
  64 }
  65
  66 TEST(CloneInstruction, Inbounds) {
  67   LLVMContext context;
  68   Value *V = new Argument(Type::getInt32PtrTy(context));
  69   Constant *Z = Constant::getNullValue(Type::getInt32Ty(context));
  70   std::vector<Value *> ops;
  71   ops.push_back(Z);
  72   GetElementPtrInst *GEP = GetElementPtrInst::Create(V, ops.begin(), ops.end());
  73   EXPECT_FALSE(GEP->clone()->isInBounds());
  74
  75   GEP->setIsInBounds();
  76   EXPECT_TRUE(GEP->clone()->isInBounds());
  77 }
  78
  79 TEST(CloneInstruction, Exact) {
  80   LLVMContext context;
  81   Value *V = new Argument(Type::getInt32Ty(context));
  82
  83   BinaryOperator *SDiv = BinaryOperator::Create(Instruction::SDiv, V, V);
  84   EXPECT_FALSE(SDiv->clone()->isExact());
  85
  86   SDiv->setIsExact(true);
  87   EXPECT_TRUE(SDiv->clone()->isExact());
  88 }