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
  14 using namespace llvm;
  15
  16 TEST(CloneInstruction, OverflowBits) {
  17   LLVMContext context;
  18   Value *V = new Argument(Type::getInt32Ty(context));
  19
  20   BinaryOperator *Add = BinaryOperator::Create(Instruction::Add, V, V);
  21   BinaryOperator *Sub = BinaryOperator::Create(Instruction::Sub, V, V);
  22   BinaryOperator *Mul = BinaryOperator::Create(Instruction::Mul, V, V);
  23
  24   EXPECT_FALSE(Add->clone()->hasNoUnsignedWrap());
  25   EXPECT_FALSE(Add->clone()->hasNoSignedWrap());
  26   EXPECT_FALSE(Sub->clone()->hasNoUnsignedWrap());
  27   EXPECT_FALSE(Sub->clone()->hasNoSignedWrap());
  28   EXPECT_FALSE(Mul->clone()->hasNoUnsignedWrap());
  29   EXPECT_FALSE(Mul->clone()->hasNoSignedWrap());
  30
  31   Add->setHasNoUnsignedWrap();
  32   Sub->setHasNoUnsignedWrap();
  33   Mul->setHasNoUnsignedWrap();
  34
  35   EXPECT_TRUE(Add->clone()->hasNoUnsignedWrap());
  36   EXPECT_FALSE(Add->clone()->hasNoSignedWrap());
  37   EXPECT_TRUE(Sub->clone()->hasNoUnsignedWrap());
  38   EXPECT_FALSE(Sub->clone()->hasNoSignedWrap());
  39   EXPECT_TRUE(Mul->clone()->hasNoUnsignedWrap());
  40   EXPECT_FALSE(Mul->clone()->hasNoSignedWrap());
  41
  42   Add->setHasNoSignedWrap();
  43   Sub->setHasNoSignedWrap();
  44   Mul->setHasNoSignedWrap();
  45
  46   EXPECT_TRUE(Add->clone()->hasNoUnsignedWrap());
  47   EXPECT_TRUE(Add->clone()->hasNoSignedWrap());
  48   EXPECT_TRUE(Sub->clone()->hasNoUnsignedWrap());
  49   EXPECT_TRUE(Sub->clone()->hasNoSignedWrap());
  50   EXPECT_TRUE(Mul->clone()->hasNoUnsignedWrap());
  51   EXPECT_TRUE(Mul->clone()->hasNoSignedWrap());
  52
  53   Add->setHasNoUnsignedWrap(false);
  54   Sub->setHasNoUnsignedWrap(false);
  55   Mul->setHasNoUnsignedWrap(false);
  56
  57   EXPECT_FALSE(Add->clone()->hasNoUnsignedWrap());
  58   EXPECT_TRUE(Add->clone()->hasNoSignedWrap());
  59   EXPECT_FALSE(Sub->clone()->hasNoUnsignedWrap());
  60   EXPECT_TRUE(Sub->clone()->hasNoSignedWrap());
  61   EXPECT_FALSE(Mul->clone()->hasNoUnsignedWrap());
  62   EXPECT_TRUE(Mul->clone()->hasNoSignedWrap());
  63 }
  64
  65 TEST(CloneInstruction, Inbounds) {
  66   LLVMContext context;
  67   Value *V = new Argument(Type::getInt32PtrTy(context));
  68   Constant *Z = Constant::getNullValue(Type::getInt32Ty(context));
  69   std::vector<Value *> ops;
  70   ops.push_back(Z);
  71   GetElementPtrInst *GEP = GetElementPtrInst::Create(V, ops.begin(), ops.end());
  72   EXPECT_FALSE(GEP->clone()->isInBounds());
  73
  74   GEP->setIsInBounds();
  75   EXPECT_TRUE(GEP->clone()->isInBounds());
  76 }
  77
  78 TEST(CloneInstruction, Exact) {
  79   LLVMContext context;
  80   Value *V = new Argument(Type::getInt32Ty(context));
  81
  82   BinaryOperator *SDiv = BinaryOperator::Create(Instruction::SDiv, V, V);
  83   EXPECT_FALSE(SDiv->clone()->isExact());
  84
  85   SDiv->setIsExact(true);
  86   EXPECT_TRUE(SDiv->clone()->isExact());
  87 }