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Diffstat (limited to 'contrib/llvm/unittests/ADT/APIntTest.cpp')
| -rw-r--r-- | contrib/llvm/unittests/ADT/APIntTest.cpp | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/contrib/llvm/unittests/ADT/APIntTest.cpp b/contrib/llvm/unittests/ADT/APIntTest.cpp new file mode 100644 index 0000000..d08e86a --- /dev/null +++ b/contrib/llvm/unittests/ADT/APIntTest.cpp @@ -0,0 +1,346 @@ +//===- llvm/unittest/ADT/APInt.cpp - APInt unit tests ---------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include <ostream> +#include "gtest/gtest.h" +#include "llvm/ADT/APInt.h" +#include "llvm/ADT/SmallString.h" + +using namespace llvm; + +namespace { + +// Test that APInt shift left works when bitwidth > 64 and shiftamt == 0 +TEST(APIntTest, ShiftLeftByZero) { + APInt One = APInt::getNullValue(65) + 1; + APInt Shl = One.shl(0); + EXPECT_EQ(true, Shl[0]); + EXPECT_EQ(false, Shl[1]); +} + +TEST(APIntTest, i128_NegativeCount) { + APInt Minus3(128, static_cast<uint64_t>(-3), true); + EXPECT_EQ(126u, Minus3.countLeadingOnes()); + EXPECT_EQ(-3, Minus3.getSExtValue()); + + APInt Minus1(128, static_cast<uint64_t>(-1), true); + EXPECT_EQ(0u, Minus1.countLeadingZeros()); + EXPECT_EQ(128u, Minus1.countLeadingOnes()); + EXPECT_EQ(128u, Minus1.getActiveBits()); + EXPECT_EQ(0u, Minus1.countTrailingZeros()); + EXPECT_EQ(128u, Minus1.countTrailingOnes()); + EXPECT_EQ(128u, Minus1.countPopulation()); + EXPECT_EQ(-1, Minus1.getSExtValue()); +} + +TEST(APIntTest, i33_Count) { + APInt i33minus2(33, static_cast<uint64_t>(-2), true); + EXPECT_EQ(0u, i33minus2.countLeadingZeros()); + EXPECT_EQ(32u, i33minus2.countLeadingOnes()); + EXPECT_EQ(33u, i33minus2.getActiveBits()); + EXPECT_EQ(1u, i33minus2.countTrailingZeros()); + EXPECT_EQ(32u, i33minus2.countPopulation()); + EXPECT_EQ(-2, i33minus2.getSExtValue()); + EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); +} + +TEST(APIntTest, i65_Count) { + APInt i65minus(65, 0, true); + i65minus.set(64); + EXPECT_EQ(0u, i65minus.countLeadingZeros()); + EXPECT_EQ(1u, i65minus.countLeadingOnes()); + EXPECT_EQ(65u, i65minus.getActiveBits()); + EXPECT_EQ(64u, i65minus.countTrailingZeros()); + EXPECT_EQ(1u, i65minus.countPopulation()); +} + +TEST(APIntTest, i128_PositiveCount) { + APInt u128max = APInt::getAllOnesValue(128); + EXPECT_EQ(128u, u128max.countLeadingOnes()); + EXPECT_EQ(0u, u128max.countLeadingZeros()); + EXPECT_EQ(128u, u128max.getActiveBits()); + EXPECT_EQ(0u, u128max.countTrailingZeros()); + EXPECT_EQ(128u, u128max.countTrailingOnes()); + EXPECT_EQ(128u, u128max.countPopulation()); + + APInt u64max(128, static_cast<uint64_t>(-1), false); + EXPECT_EQ(64u, u64max.countLeadingZeros()); + EXPECT_EQ(0u, u64max.countLeadingOnes()); + EXPECT_EQ(64u, u64max.getActiveBits()); + EXPECT_EQ(0u, u64max.countTrailingZeros()); + EXPECT_EQ(64u, u64max.countTrailingOnes()); + EXPECT_EQ(64u, u64max.countPopulation()); + EXPECT_EQ((uint64_t)~0ull, u64max.getZExtValue()); + + APInt zero(128, 0, true); + EXPECT_EQ(128u, zero.countLeadingZeros()); + EXPECT_EQ(0u, zero.countLeadingOnes()); + EXPECT_EQ(0u, zero.getActiveBits()); + EXPECT_EQ(128u, zero.countTrailingZeros()); + EXPECT_EQ(0u, zero.countTrailingOnes()); + EXPECT_EQ(0u, zero.countPopulation()); + EXPECT_EQ(0u, zero.getSExtValue()); + EXPECT_EQ(0u, zero.getZExtValue()); + + APInt one(128, 1, true); + EXPECT_EQ(127u, one.countLeadingZeros()); + EXPECT_EQ(0u, one.countLeadingOnes()); + EXPECT_EQ(1u, one.getActiveBits()); + EXPECT_EQ(0u, one.countTrailingZeros()); + EXPECT_EQ(1u, one.countTrailingOnes()); + EXPECT_EQ(1u, one.countPopulation()); + EXPECT_EQ(1, one.getSExtValue()); + EXPECT_EQ(1u, one.getZExtValue()); +} + +TEST(APIntTest, i1) { + const APInt neg_two(1, static_cast<uint64_t>(-2), true); + const APInt neg_one(1, static_cast<uint64_t>(-1), true); + const APInt zero(1, 0); + const APInt one(1, 1); + const APInt two(1, 2); + + EXPECT_EQ(0, neg_two.getSExtValue()); + EXPECT_EQ(-1, neg_one.getSExtValue()); + EXPECT_EQ(1u, neg_one.getZExtValue()); + EXPECT_EQ(0u, zero.getZExtValue()); + EXPECT_EQ(-1, one.getSExtValue()); + EXPECT_EQ(1u, one.getZExtValue()); + EXPECT_EQ(0u, two.getZExtValue()); + EXPECT_EQ(0, two.getSExtValue()); + + // Basic equalities for 1-bit values. + EXPECT_EQ(zero, two); + EXPECT_EQ(zero, neg_two); + EXPECT_EQ(one, neg_one); + EXPECT_EQ(two, neg_two); + + // Additions. + EXPECT_EQ(two, one + one); + EXPECT_EQ(zero, neg_one + one); + EXPECT_EQ(neg_two, neg_one + neg_one); + + // Subtractions. + EXPECT_EQ(neg_two, neg_one - one); + EXPECT_EQ(two, one - neg_one); + EXPECT_EQ(zero, one - one); + + // Shifts. + EXPECT_EQ(zero, one << one); + EXPECT_EQ(one, one << zero); + EXPECT_EQ(zero, one.shl(1)); + EXPECT_EQ(one, one.shl(0)); + EXPECT_EQ(zero, one.lshr(1)); + EXPECT_EQ(zero, one.ashr(1)); + + // Multiplies. + EXPECT_EQ(neg_one, neg_one * one); + EXPECT_EQ(neg_one, one * neg_one); + EXPECT_EQ(one, neg_one * neg_one); + EXPECT_EQ(one, one * one); + + // Divides. + EXPECT_EQ(neg_one, one.sdiv(neg_one)); + EXPECT_EQ(neg_one, neg_one.sdiv(one)); + EXPECT_EQ(one, neg_one.sdiv(neg_one)); + EXPECT_EQ(one, one.sdiv(one)); + + EXPECT_EQ(neg_one, one.udiv(neg_one)); + EXPECT_EQ(neg_one, neg_one.udiv(one)); + EXPECT_EQ(one, neg_one.udiv(neg_one)); + EXPECT_EQ(one, one.udiv(one)); + + // Remainders. + EXPECT_EQ(zero, neg_one.srem(one)); + EXPECT_EQ(zero, neg_one.urem(one)); + EXPECT_EQ(zero, one.srem(neg_one)); +} + +TEST(APIntTest, fromString) { + EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); + EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); + EXPECT_EQ(APInt(32, 2), APInt(32, "10", 2)); + EXPECT_EQ(APInt(32, 3), APInt(32, "11", 2)); + EXPECT_EQ(APInt(32, 4), APInt(32, "100", 2)); + + EXPECT_EQ(APInt(32, 0), APInt(32, "+0", 2)); + EXPECT_EQ(APInt(32, 1), APInt(32, "+1", 2)); + EXPECT_EQ(APInt(32, 2), APInt(32, "+10", 2)); + EXPECT_EQ(APInt(32, 3), APInt(32, "+11", 2)); + EXPECT_EQ(APInt(32, 4), APInt(32, "+100", 2)); + + EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 2)); + EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 2)); + EXPECT_EQ(APInt(32, uint64_t(-2LL)), APInt(32, "-10", 2)); + EXPECT_EQ(APInt(32, uint64_t(-3LL)), APInt(32, "-11", 2)); + EXPECT_EQ(APInt(32, uint64_t(-4LL)), APInt(32, "-100", 2)); + + + EXPECT_EQ(APInt(32, 0), APInt(32, "0", 8)); + EXPECT_EQ(APInt(32, 1), APInt(32, "1", 8)); + EXPECT_EQ(APInt(32, 7), APInt(32, "7", 8)); + EXPECT_EQ(APInt(32, 8), APInt(32, "10", 8)); + EXPECT_EQ(APInt(32, 15), APInt(32, "17", 8)); + EXPECT_EQ(APInt(32, 16), APInt(32, "20", 8)); + + EXPECT_EQ(APInt(32, +0), APInt(32, "+0", 8)); + EXPECT_EQ(APInt(32, +1), APInt(32, "+1", 8)); + EXPECT_EQ(APInt(32, +7), APInt(32, "+7", 8)); + EXPECT_EQ(APInt(32, +8), APInt(32, "+10", 8)); + EXPECT_EQ(APInt(32, +15), APInt(32, "+17", 8)); + EXPECT_EQ(APInt(32, +16), APInt(32, "+20", 8)); + + EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 8)); + EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 8)); + EXPECT_EQ(APInt(32, uint64_t(-7LL)), APInt(32, "-7", 8)); + EXPECT_EQ(APInt(32, uint64_t(-8LL)), APInt(32, "-10", 8)); + EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-17", 8)); + EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-20", 8)); + + + EXPECT_EQ(APInt(32, 0), APInt(32, "0", 10)); + EXPECT_EQ(APInt(32, 1), APInt(32, "1", 10)); + EXPECT_EQ(APInt(32, 9), APInt(32, "9", 10)); + EXPECT_EQ(APInt(32, 10), APInt(32, "10", 10)); + EXPECT_EQ(APInt(32, 19), APInt(32, "19", 10)); + EXPECT_EQ(APInt(32, 20), APInt(32, "20", 10)); + + EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 10)); + EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 10)); + EXPECT_EQ(APInt(32, uint64_t(-9LL)), APInt(32, "-9", 10)); + EXPECT_EQ(APInt(32, uint64_t(-10LL)), APInt(32, "-10", 10)); + EXPECT_EQ(APInt(32, uint64_t(-19LL)), APInt(32, "-19", 10)); + EXPECT_EQ(APInt(32, uint64_t(-20LL)), APInt(32, "-20", 10)); + + + EXPECT_EQ(APInt(32, 0), APInt(32, "0", 16)); + EXPECT_EQ(APInt(32, 1), APInt(32, "1", 16)); + EXPECT_EQ(APInt(32, 15), APInt(32, "F", 16)); + EXPECT_EQ(APInt(32, 16), APInt(32, "10", 16)); + EXPECT_EQ(APInt(32, 31), APInt(32, "1F", 16)); + EXPECT_EQ(APInt(32, 32), APInt(32, "20", 16)); + + EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 16)); + EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 16)); + EXPECT_EQ(APInt(32, uint64_t(-15LL)), APInt(32, "-F", 16)); + EXPECT_EQ(APInt(32, uint64_t(-16LL)), APInt(32, "-10", 16)); + EXPECT_EQ(APInt(32, uint64_t(-31LL)), APInt(32, "-1F", 16)); + EXPECT_EQ(APInt(32, uint64_t(-32LL)), APInt(32, "-20", 16)); +} + +TEST(APIntTest, StringBitsNeeded2) { + EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 2)); + EXPECT_EQ(1U, APInt::getBitsNeeded( "1", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "10", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "11", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded("100", 2)); + + EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 2)); + EXPECT_EQ(1U, APInt::getBitsNeeded( "+1", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "+10", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "+11", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded("+100", 2)); + + EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 2)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "-1", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "-10", 2)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "-11", 2)); + EXPECT_EQ(4U, APInt::getBitsNeeded("-100", 2)); +} + +TEST(APIntTest, StringBitsNeeded8) { + EXPECT_EQ(3U, APInt::getBitsNeeded( "0", 8)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "7", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("10", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("17", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("20", 8)); + + EXPECT_EQ(3U, APInt::getBitsNeeded( "+0", 8)); + EXPECT_EQ(3U, APInt::getBitsNeeded( "+7", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("+10", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("+17", 8)); + EXPECT_EQ(6U, APInt::getBitsNeeded("+20", 8)); + + EXPECT_EQ(4U, APInt::getBitsNeeded( "-0", 8)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "-7", 8)); + EXPECT_EQ(7U, APInt::getBitsNeeded("-10", 8)); + EXPECT_EQ(7U, APInt::getBitsNeeded("-17", 8)); + EXPECT_EQ(7U, APInt::getBitsNeeded("-20", 8)); +} + +TEST(APIntTest, StringBitsNeeded10) { + EXPECT_EQ(1U, APInt::getBitsNeeded( "0", 10)); + EXPECT_EQ(2U, APInt::getBitsNeeded( "3", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "9", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded("10", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("19", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("20", 10)); + + EXPECT_EQ(1U, APInt::getBitsNeeded( "+0", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "+9", 10)); + EXPECT_EQ(4U, APInt::getBitsNeeded("+10", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("+19", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("+20", 10)); + + EXPECT_EQ(2U, APInt::getBitsNeeded( "-0", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded( "-9", 10)); + EXPECT_EQ(5U, APInt::getBitsNeeded("-10", 10)); + EXPECT_EQ(6U, APInt::getBitsNeeded("-19", 10)); + EXPECT_EQ(6U, APInt::getBitsNeeded("-20", 10)); +} + +TEST(APIntTest, StringBitsNeeded16) { + EXPECT_EQ(4U, APInt::getBitsNeeded( "0", 16)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("10", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("1F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("20", 16)); + + EXPECT_EQ(4U, APInt::getBitsNeeded( "+0", 16)); + EXPECT_EQ(4U, APInt::getBitsNeeded( "+F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("+10", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("+1F", 16)); + EXPECT_EQ(8U, APInt::getBitsNeeded("+20", 16)); + + EXPECT_EQ(5U, APInt::getBitsNeeded( "-0", 16)); + EXPECT_EQ(5U, APInt::getBitsNeeded( "-F", 16)); + EXPECT_EQ(9U, APInt::getBitsNeeded("-10", 16)); + EXPECT_EQ(9U, APInt::getBitsNeeded("-1F", 16)); + EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); +} + +TEST(APIntTest, Log2) { + EXPECT_EQ(APInt(15, 7).logBase2(), 2U); + EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U); + EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); + EXPECT_EQ(APInt(15, 8).logBase2(), 3U); + EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3U); + EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); + EXPECT_EQ(APInt(15, 9).logBase2(), 3U); + EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4U); + EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); +} + +#ifdef GTEST_HAS_DEATH_TEST +#ifndef NDEBUG +TEST(APIntTest, StringDeath) { + EXPECT_DEATH(APInt(0, "", 0), "Bitwidth too small"); + EXPECT_DEATH(APInt(32, "", 0), "Invalid string length"); + EXPECT_DEATH(APInt(32, "0", 0), "Radix should be 2, 8, 10, or 16!"); + EXPECT_DEATH(APInt(32, "", 10), "Invalid string length"); + EXPECT_DEATH(APInt(32, "-", 10), "String is only a sign, needs a value."); + EXPECT_DEATH(APInt(1, "1234", 10), "Insufficient bit width"); + EXPECT_DEATH(APInt(32, "\0", 10), "Invalid string length"); + EXPECT_DEATH(APInt(32, StringRef("1\02", 3), 10), "Invalid character in digit string"); + EXPECT_DEATH(APInt(32, "1L", 10), "Invalid character in digit string"); +} +#endif +#endif + +} |
