unittests/ADT/APSIntTest.cpp

   1 //===- llvm/unittest/ADT/APSIntTest.cpp - APSInt unit tests ---------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/ADT/APSInt.h"
  10 #include "gtest/gtest.h"
  11
  12 using namespace llvm;
  13
  14 namespace {
  15
  16 TEST(APSIntTest, MoveTest) {
  17   APSInt A(32, true);
  18   EXPECT_TRUE(A.isUnsigned());
  19
  20   APSInt B(128, false);
  21   A = B;
  22   EXPECT_FALSE(A.isUnsigned());
  23
  24   APSInt C(B);
  25   EXPECT_FALSE(C.isUnsigned());
  26
  27   APInt Wide(256, 0);
  28   const uint64_t *Bits = Wide.getRawData();
  29   APSInt D(std::move(Wide));
  30   EXPECT_TRUE(D.isUnsigned());
  31   EXPECT_EQ(Bits, D.getRawData()); // Verify that "Wide" was really moved.
  32
  33   A = APSInt(64, true);
  34   EXPECT_TRUE(A.isUnsigned());
  35
  36   Wide = APInt(128, 1);
  37   Bits = Wide.getRawData();
  38   A = std::move(Wide);
  39   EXPECT_TRUE(A.isUnsigned());
  40   EXPECT_EQ(Bits, A.getRawData()); // Verify that "Wide" was really moved.
  41 }
  42
  43 TEST(APSIntTest, get) {
  44   EXPECT_TRUE(APSInt::get(7).isSigned());
  45   EXPECT_EQ(64u, APSInt::get(7).getBitWidth());
  46   EXPECT_EQ(7u, APSInt::get(7).getZExtValue());
  47   EXPECT_EQ(7, APSInt::get(7).getSExtValue());
  48   EXPECT_TRUE(APSInt::get(-7).isSigned());
  49   EXPECT_EQ(64u, APSInt::get(-7).getBitWidth());
  50   EXPECT_EQ(-7, APSInt::get(-7).getSExtValue());
  51   EXPECT_EQ(UINT64_C(0) - 7, APSInt::get(-7).getZExtValue());
  52 }
  53
  54 TEST(APSIntTest, getUnsigned) {
  55   EXPECT_TRUE(APSInt::getUnsigned(7).isUnsigned());
  56   EXPECT_EQ(64u, APSInt::getUnsigned(7).getBitWidth());
  57   EXPECT_EQ(7u, APSInt::getUnsigned(7).getZExtValue());
  58   EXPECT_EQ(7, APSInt::getUnsigned(7).getSExtValue());
  59   EXPECT_TRUE(APSInt::getUnsigned(-7).isUnsigned());
  60   EXPECT_EQ(64u, APSInt::getUnsigned(-7).getBitWidth());
  61   EXPECT_EQ(-7, APSInt::getUnsigned(-7).getSExtValue());
  62   EXPECT_EQ(UINT64_C(0) - 7, APSInt::getUnsigned(-7).getZExtValue());
  63 }
  64
  65 TEST(APSIntTest, getExtValue) {
  66   EXPECT_TRUE(APSInt(APInt(3, 7), true).isUnsigned());
  67   EXPECT_TRUE(APSInt(APInt(3, 7), false).isSigned());
  68   EXPECT_TRUE(APSInt(APInt(4, 7), true).isUnsigned());
  69   EXPECT_TRUE(APSInt(APInt(4, 7), false).isSigned());
  70   EXPECT_TRUE(APSInt(APInt(4, -7), true).isUnsigned());
  71   EXPECT_TRUE(APSInt(APInt(4, -7), false).isSigned());
  72   EXPECT_EQ(7, APSInt(APInt(3, 7), true).getExtValue());
  73   EXPECT_EQ(-1, APSInt(APInt(3, 7), false).getExtValue());
  74   EXPECT_EQ(7, APSInt(APInt(4, 7), true).getExtValue());
  75   EXPECT_EQ(7, APSInt(APInt(4, 7), false).getExtValue());
  76   EXPECT_EQ(9, APSInt(APInt(4, -7), true).getExtValue());
  77   EXPECT_EQ(-7, APSInt(APInt(4, -7), false).getExtValue());
  78 }
  79
  80 TEST(APSIntTest, compareValues) {
  81   auto U = [](uint64_t V) { return APSInt::getUnsigned(V); };
  82   auto S = [](int64_t V) { return APSInt::get(V); };
  83
  84   // Bit-width matches and is-signed.
  85   EXPECT_TRUE(APSInt::compareValues(S(7), S(8)) < 0);
  86   EXPECT_TRUE(APSInt::compareValues(S(8), S(7)) > 0);
  87   EXPECT_TRUE(APSInt::compareValues(S(7), S(7)) == 0);
  88   EXPECT_TRUE(APSInt::compareValues(S(-7), S(8)) < 0);
  89   EXPECT_TRUE(APSInt::compareValues(S(8), S(-7)) > 0);
  90   EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7)) == 0);
  91   EXPECT_TRUE(APSInt::compareValues(S(-7), S(-8)) > 0);
  92   EXPECT_TRUE(APSInt::compareValues(S(-8), S(-7)) < 0);
  93   EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7)) == 0);
  94
  95   // Bit-width matches and not is-signed.
  96   EXPECT_TRUE(APSInt::compareValues(U(7), U(8)) < 0);
  97   EXPECT_TRUE(APSInt::compareValues(U(8), U(7)) > 0);
  98   EXPECT_TRUE(APSInt::compareValues(U(7), U(7)) == 0);
  99
 100   // Bit-width matches and mixed signs.
 101   EXPECT_TRUE(APSInt::compareValues(U(7), S(8)) < 0);
 102   EXPECT_TRUE(APSInt::compareValues(U(8), S(7)) > 0);
 103   EXPECT_TRUE(APSInt::compareValues(U(7), S(7)) == 0);
 104   EXPECT_TRUE(APSInt::compareValues(U(8), S(-7)) > 0);
 105
 106   // Bit-width mismatch and is-signed.
 107   EXPECT_TRUE(APSInt::compareValues(S(7).trunc(32), S(8)) < 0);
 108   EXPECT_TRUE(APSInt::compareValues(S(8).trunc(32), S(7)) > 0);
 109   EXPECT_TRUE(APSInt::compareValues(S(7).trunc(32), S(7)) == 0);
 110   EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(8)) < 0);
 111   EXPECT_TRUE(APSInt::compareValues(S(8).trunc(32), S(-7)) > 0);
 112   EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(-7)) == 0);
 113   EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(-8)) > 0);
 114   EXPECT_TRUE(APSInt::compareValues(S(-8).trunc(32), S(-7)) < 0);
 115   EXPECT_TRUE(APSInt::compareValues(S(-7).trunc(32), S(-7)) == 0);
 116   EXPECT_TRUE(APSInt::compareValues(S(7), S(8).trunc(32)) < 0);
 117   EXPECT_TRUE(APSInt::compareValues(S(8), S(7).trunc(32)) > 0);
 118   EXPECT_TRUE(APSInt::compareValues(S(7), S(7).trunc(32)) == 0);
 119   EXPECT_TRUE(APSInt::compareValues(S(-7), S(8).trunc(32)) < 0);
 120   EXPECT_TRUE(APSInt::compareValues(S(8), S(-7).trunc(32)) > 0);
 121   EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7).trunc(32)) == 0);
 122   EXPECT_TRUE(APSInt::compareValues(S(-7), S(-8).trunc(32)) > 0);
 123   EXPECT_TRUE(APSInt::compareValues(S(-8), S(-7).trunc(32)) < 0);
 124   EXPECT_TRUE(APSInt::compareValues(S(-7), S(-7).trunc(32)) == 0);
 125
 126   // Bit-width mismatch and not is-signed.
 127   EXPECT_TRUE(APSInt::compareValues(U(7), U(8).trunc(32)) < 0);
 128   EXPECT_TRUE(APSInt::compareValues(U(8), U(7).trunc(32)) > 0);
 129   EXPECT_TRUE(APSInt::compareValues(U(7), U(7).trunc(32)) == 0);
 130   EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), U(8)) < 0);
 131   EXPECT_TRUE(APSInt::compareValues(U(8).trunc(32), U(7)) > 0);
 132   EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), U(7)) == 0);
 133
 134   // Bit-width mismatch and mixed signs.
 135   EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), S(8)) < 0);
 136   EXPECT_TRUE(APSInt::compareValues(U(8).trunc(32), S(7)) > 0);
 137   EXPECT_TRUE(APSInt::compareValues(U(7).trunc(32), S(7)) == 0);
 138   EXPECT_TRUE(APSInt::compareValues(U(8).trunc(32), S(-7)) > 0);
 139   EXPECT_TRUE(APSInt::compareValues(U(7), S(8).trunc(32)) < 0);
 140   EXPECT_TRUE(APSInt::compareValues(U(8), S(7).trunc(32)) > 0);
 141   EXPECT_TRUE(APSInt::compareValues(U(7), S(7).trunc(32)) == 0);
 142   EXPECT_TRUE(APSInt::compareValues(U(8), S(-7).trunc(32)) > 0);
 143 }
 144
 145 TEST(APSIntTest, FromString) {
 146   EXPECT_EQ(APSInt("1").getExtValue(), 1);
 147   EXPECT_EQ(APSInt("-1").getExtValue(), -1);
 148   EXPECT_EQ(APSInt("0").getExtValue(), 0);
 149   EXPECT_EQ(APSInt("56789").getExtValue(), 56789);
 150   EXPECT_EQ(APSInt("-1234").getExtValue(), -1234);
 151 }
 152
 153 #if defined(GTEST_HAS_DEATH_TEST) && !defined(NDEBUG)
 154
 155 TEST(APSIntTest, StringDeath) {
 156   EXPECT_DEATH((void)APSInt(""), "Invalid string length");
 157   EXPECT_DEATH((void)APSInt("1a"), "Invalid character in digit string");
 158 }
 159
 160 #endif
 161
 162 TEST(APSIntTest, SignedHighBit) {
 163   APSInt False(APInt(1, 0), false);
 164   APSInt True(APInt(1, 1), false);
 165   APSInt CharMin(APInt(8, 0), false);
 166   APSInt CharSmall(APInt(8, 0x13), false);
 167   APSInt CharBoundaryUnder(APInt(8, 0x7f), false);
 168   APSInt CharBoundaryOver(APInt(8, 0x80), false);
 169   APSInt CharLarge(APInt(8, 0xd9), false);
 170   APSInt CharMax(APInt(8, 0xff), false);
 171
 172   EXPECT_FALSE(False.isNegative());
 173   EXPECT_TRUE(False.isNonNegative());
 174   EXPECT_FALSE(False.isStrictlyPositive());
 175
 176   EXPECT_TRUE(True.isNegative());
 177   EXPECT_FALSE(True.isNonNegative());
 178   EXPECT_FALSE(True.isStrictlyPositive());
 179
 180   EXPECT_FALSE(CharMin.isNegative());
 181   EXPECT_TRUE(CharMin.isNonNegative());
 182   EXPECT_FALSE(CharMin.isStrictlyPositive());
 183
 184   EXPECT_FALSE(CharSmall.isNegative());
 185   EXPECT_TRUE(CharSmall.isNonNegative());
 186   EXPECT_TRUE(CharSmall.isStrictlyPositive());
 187
 188   EXPECT_FALSE(CharBoundaryUnder.isNegative());
 189   EXPECT_TRUE(CharBoundaryUnder.isNonNegative());
 190   EXPECT_TRUE(CharBoundaryUnder.isStrictlyPositive());
 191
 192   EXPECT_TRUE(CharBoundaryOver.isNegative());
 193   EXPECT_FALSE(CharBoundaryOver.isNonNegative());
 194   EXPECT_FALSE(CharBoundaryOver.isStrictlyPositive());
 195
 196   EXPECT_TRUE(CharLarge.isNegative());
 197   EXPECT_FALSE(CharLarge.isNonNegative());
 198   EXPECT_FALSE(CharLarge.isStrictlyPositive());
 199
 200   EXPECT_TRUE(CharMax.isNegative());
 201   EXPECT_FALSE(CharMax.isNonNegative());
 202   EXPECT_FALSE(CharMax.isStrictlyPositive());
 203 }
 204
 205 TEST(APSIntTest, UnsignedHighBit) {
 206   APSInt False(APInt(1, 0));
 207   APSInt True(APInt(1, 1));
 208   APSInt CharMin(APInt(8, 0));
 209   APSInt CharSmall(APInt(8, 0x13));
 210   APSInt CharBoundaryUnder(APInt(8, 0x7f));
 211   APSInt CharBoundaryOver(APInt(8, 0x80));
 212   APSInt CharLarge(APInt(8, 0xd9));
 213   APSInt CharMax(APInt(8, 0xff));
 214
 215   EXPECT_FALSE(False.isNegative());
 216   EXPECT_TRUE(False.isNonNegative());
 217   EXPECT_FALSE(False.isStrictlyPositive());
 218
 219   EXPECT_FALSE(True.isNegative());
 220   EXPECT_TRUE(True.isNonNegative());
 221   EXPECT_TRUE(True.isStrictlyPositive());
 222
 223   EXPECT_FALSE(CharMin.isNegative());
 224   EXPECT_TRUE(CharMin.isNonNegative());
 225   EXPECT_FALSE(CharMin.isStrictlyPositive());
 226
 227   EXPECT_FALSE(CharSmall.isNegative());
 228   EXPECT_TRUE(CharSmall.isNonNegative());
 229   EXPECT_TRUE(CharSmall.isStrictlyPositive());
 230
 231   EXPECT_FALSE(CharBoundaryUnder.isNegative());
 232   EXPECT_TRUE(CharBoundaryUnder.isNonNegative());
 233   EXPECT_TRUE(CharBoundaryUnder.isStrictlyPositive());
 234
 235   EXPECT_FALSE(CharBoundaryOver.isNegative());
 236   EXPECT_TRUE(CharBoundaryOver.isNonNegative());
 237   EXPECT_TRUE(CharBoundaryOver.isStrictlyPositive());
 238
 239   EXPECT_FALSE(CharLarge.isNegative());
 240   EXPECT_TRUE(CharLarge.isNonNegative());
 241   EXPECT_TRUE(CharLarge.isStrictlyPositive());
 242
 243   EXPECT_FALSE(CharMax.isNegative());
 244   EXPECT_TRUE(CharMax.isNonNegative());
 245   EXPECT_TRUE(CharMax.isStrictlyPositive());
 246 }
 247
 248 } // end anonymous namespace