X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=unittests%2FADT%2FAPIntTest.cpp;h=8198c719d6aa754e693499b038afcb2e606f9df6;hb=93712874d86fb1346dc9a9d0f808271c5040b838;hp=bb54cd935d7f4579905cc79f46342de2519ee763;hpb=2e734269e3f354e52bd9e55d791e1885aa7d4cd8;p=oota-llvm.git diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp index bb54cd935d7..8198c719d6a 100644 --- a/unittests/ADT/APIntTest.cpp +++ b/unittests/ADT/APIntTest.cpp @@ -7,43 +7,29 @@ // //===----------------------------------------------------------------------===// -#include -#include "llvm/Support/raw_ostream.h" -#include "gtest/gtest.h" #include "llvm/ADT/APInt.h" #include "llvm/ADT/SmallString.h" +#include "gtest/gtest.h" +#include using namespace llvm; namespace { -// Make the Google Test failure output equivalent to APInt::dump() -std::ostream& operator<<(std::ostream &OS, const llvm::APInt& I) { - llvm::raw_os_ostream raw_os(OS); - - SmallString<40> S, U; - I.toStringUnsigned(U); - I.toStringSigned(S); - raw_os << "APInt(" << I.getBitWidth()<< "b, " - << U.c_str() << "u " << S.c_str() << "s)"; - raw_os.flush(); - return OS; -} - // 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]); + EXPECT_TRUE(Shl[0]); + EXPECT_FALSE(Shl[1]); } TEST(APIntTest, i128_NegativeCount) { - APInt Minus3(128, (uint64_t)-3, true); + APInt Minus3(128, static_cast(-3), true); EXPECT_EQ(126u, Minus3.countLeadingOnes()); EXPECT_EQ(-3, Minus3.getSExtValue()); - APInt Minus1(128, (uint64_t)-1, true); + APInt Minus1(128, static_cast(-1), true); EXPECT_EQ(0u, Minus1.countLeadingZeros()); EXPECT_EQ(128u, Minus1.countLeadingOnes()); EXPECT_EQ(128u, Minus1.getActiveBits()); @@ -53,8 +39,11 @@ TEST(APIntTest, i128_NegativeCount) { EXPECT_EQ(-1, Minus1.getSExtValue()); } +// XFAIL this test on FreeBSD where the system gcc-4.2.1 seems to miscompile it. +#if defined(__llvm__) || !defined(__FreeBSD__) + TEST(APIntTest, i33_Count) { - APInt i33minus2(33, -2, true); + APInt i33minus2(33, static_cast(-2), true); EXPECT_EQ(0u, i33minus2.countLeadingZeros()); EXPECT_EQ(32u, i33minus2.countLeadingOnes()); EXPECT_EQ(33u, i33minus2.getActiveBits()); @@ -64,9 +53,19 @@ TEST(APIntTest, i33_Count) { EXPECT_EQ(((uint64_t)-2)&((1ull<<33) -1), i33minus2.getZExtValue()); } +#endif + TEST(APIntTest, i65_Count) { + APInt i65(65, 0, true); + EXPECT_EQ(65u, i65.countLeadingZeros()); + EXPECT_EQ(0u, i65.countLeadingOnes()); + EXPECT_EQ(0u, i65.getActiveBits()); + EXPECT_EQ(1u, i65.getActiveWords()); + EXPECT_EQ(65u, i65.countTrailingZeros()); + EXPECT_EQ(0u, i65.countPopulation()); + APInt i65minus(65, 0, true); - i65minus.set(64); + i65minus.setBit(64); EXPECT_EQ(0u, i65minus.countLeadingZeros()); EXPECT_EQ(1u, i65minus.countLeadingOnes()); EXPECT_EQ(65u, i65minus.getActiveBits()); @@ -83,7 +82,7 @@ TEST(APIntTest, i128_PositiveCount) { EXPECT_EQ(128u, u128max.countTrailingOnes()); EXPECT_EQ(128u, u128max.countPopulation()); - APInt u64max(128, (uint64_t)-1, false); + APInt u64max(128, static_cast(-1), false); EXPECT_EQ(64u, u64max.countLeadingZeros()); EXPECT_EQ(0u, u64max.countLeadingOnes()); EXPECT_EQ(64u, u64max.getActiveBits()); @@ -114,8 +113,8 @@ TEST(APIntTest, i128_PositiveCount) { } TEST(APIntTest, i1) { - const APInt neg_two(1, -2, true); - const APInt neg_one(1, -1, true); + const APInt neg_two(1, static_cast(-2), true); + const APInt neg_one(1, static_cast(-1), true); const APInt zero(1, 0); const APInt one(1, 1); const APInt two(1, 2); @@ -153,6 +152,12 @@ TEST(APIntTest, i1) { EXPECT_EQ(zero, one.lshr(1)); EXPECT_EQ(zero, one.ashr(1)); + // Rotates. + EXPECT_EQ(one, one.rotl(0)); + EXPECT_EQ(one, one.rotl(1)); + EXPECT_EQ(one, one.rotr(0)); + EXPECT_EQ(one, one.rotr(1)); + // Multiplies. EXPECT_EQ(neg_one, neg_one * one); EXPECT_EQ(neg_one, one * neg_one); @@ -174,6 +179,520 @@ TEST(APIntTest, i1) { EXPECT_EQ(zero, neg_one.srem(one)); EXPECT_EQ(zero, neg_one.urem(one)); EXPECT_EQ(zero, one.srem(neg_one)); + + // sdivrem + { + APInt q(8, 0); + APInt r(8, 0); + APInt one(8, 1); + APInt two(8, 2); + APInt nine(8, 9); + APInt four(8, 4); + + EXPECT_EQ(nine.srem(two), one); + EXPECT_EQ(nine.srem(-two), one); + EXPECT_EQ((-nine).srem(two), -one); + EXPECT_EQ((-nine).srem(-two), -one); + + APInt::sdivrem(nine, two, q, r); + EXPECT_EQ(four, q); + EXPECT_EQ(one, r); + APInt::sdivrem(-nine, two, q, r); + EXPECT_EQ(-four, q); + EXPECT_EQ(-one, r); + APInt::sdivrem(nine, -two, q, r); + EXPECT_EQ(-four, q); + EXPECT_EQ(one, r); + APInt::sdivrem(-nine, -two, q, r); + EXPECT_EQ(four, q); + EXPECT_EQ(-one, r); + } +} + +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)); + + EXPECT_EQ(APInt(32, 0), APInt(32, "0", 36)); + EXPECT_EQ(APInt(32, 1), APInt(32, "1", 36)); + EXPECT_EQ(APInt(32, 35), APInt(32, "Z", 36)); + EXPECT_EQ(APInt(32, 36), APInt(32, "10", 36)); + EXPECT_EQ(APInt(32, 71), APInt(32, "1Z", 36)); + EXPECT_EQ(APInt(32, 72), APInt(32, "20", 36)); + + EXPECT_EQ(APInt(32, uint64_t(-0LL)), APInt(32, "-0", 36)); + EXPECT_EQ(APInt(32, uint64_t(-1LL)), APInt(32, "-1", 36)); + EXPECT_EQ(APInt(32, uint64_t(-35LL)), APInt(32, "-Z", 36)); + EXPECT_EQ(APInt(32, uint64_t(-36LL)), APInt(32, "-10", 36)); + EXPECT_EQ(APInt(32, uint64_t(-71LL)), APInt(32, "-1Z", 36)); + EXPECT_EQ(APInt(32, uint64_t(-72LL)), APInt(32, "-20", 36)); +} + +TEST(APIntTest, FromArray) { + EXPECT_EQ(APInt(32, uint64_t(1)), APInt(32, ArrayRef(1))); +} + +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, toString) { + SmallString<16> S; + bool isSigned; + + APInt(8, 0).toString(S, 2, true, true); + EXPECT_EQ(S.str().str(), "0b0"); + S.clear(); + APInt(8, 0).toString(S, 8, true, true); + EXPECT_EQ(S.str().str(), "00"); + S.clear(); + APInt(8, 0).toString(S, 10, true, true); + EXPECT_EQ(S.str().str(), "0"); + S.clear(); + APInt(8, 0).toString(S, 16, true, true); + EXPECT_EQ(S.str().str(), "0x0"); + S.clear(); + APInt(8, 0).toString(S, 36, true, false); + EXPECT_EQ(S.str().str(), "0"); + S.clear(); + + isSigned = false; + APInt(8, 255, isSigned).toString(S, 2, isSigned, true); + EXPECT_EQ(S.str().str(), "0b11111111"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 8, isSigned, true); + EXPECT_EQ(S.str().str(), "0377"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 10, isSigned, true); + EXPECT_EQ(S.str().str(), "255"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 16, isSigned, true); + EXPECT_EQ(S.str().str(), "0xFF"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 36, isSigned, false); + EXPECT_EQ(S.str().str(), "73"); + S.clear(); + + isSigned = true; + APInt(8, 255, isSigned).toString(S, 2, isSigned, true); + EXPECT_EQ(S.str().str(), "-0b1"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 8, isSigned, true); + EXPECT_EQ(S.str().str(), "-01"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 10, isSigned, true); + EXPECT_EQ(S.str().str(), "-1"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 16, isSigned, true); + EXPECT_EQ(S.str().str(), "-0x1"); + S.clear(); + APInt(8, 255, isSigned).toString(S, 36, isSigned, false); + EXPECT_EQ(S.str().str(), "-1"); + S.clear(); +} + +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); +} + +TEST(APIntTest, magic) { + EXPECT_EQ(APInt(32, 3).magic().m, APInt(32, "55555556", 16)); + EXPECT_EQ(APInt(32, 3).magic().s, 0U); + EXPECT_EQ(APInt(32, 5).magic().m, APInt(32, "66666667", 16)); + EXPECT_EQ(APInt(32, 5).magic().s, 1U); + EXPECT_EQ(APInt(32, 7).magic().m, APInt(32, "92492493", 16)); + EXPECT_EQ(APInt(32, 7).magic().s, 2U); +} + +TEST(APIntTest, magicu) { + EXPECT_EQ(APInt(32, 3).magicu().m, APInt(32, "AAAAAAAB", 16)); + EXPECT_EQ(APInt(32, 3).magicu().s, 1U); + EXPECT_EQ(APInt(32, 5).magicu().m, APInt(32, "CCCCCCCD", 16)); + EXPECT_EQ(APInt(32, 5).magicu().s, 2U); + EXPECT_EQ(APInt(32, 7).magicu().m, APInt(32, "24924925", 16)); + EXPECT_EQ(APInt(32, 7).magicu().s, 3U); + EXPECT_EQ(APInt(64, 25).magicu(1).m, APInt(64, "A3D70A3D70A3D70B", 16)); + EXPECT_EQ(APInt(64, 25).magicu(1).s, 4U); +} + +#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, 16, or 36!"); + 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 + +TEST(APIntTest, mul_clear) { + APInt ValA(65, -1ULL); + APInt ValB(65, 4); + APInt ValC(65, 0); + ValC = ValA * ValB; + ValA *= ValB; + EXPECT_EQ(ValA.toString(10, false), ValC.toString(10, false)); +} + +TEST(APIntTest, Rotate) { + EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(0)); + EXPECT_EQ(APInt(8, 2), APInt(8, 1).rotl(1)); + EXPECT_EQ(APInt(8, 4), APInt(8, 1).rotl(2)); + EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotl(4)); + EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotl(8)); + + EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(0)); + EXPECT_EQ(APInt(8, 32), APInt(8, 16).rotl(1)); + EXPECT_EQ(APInt(8, 64), APInt(8, 16).rotl(2)); + EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotl(4)); + EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotl(8)); + + EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(0)); + EXPECT_EQ(APInt(8, 8), APInt(8, 16).rotr(1)); + EXPECT_EQ(APInt(8, 4), APInt(8, 16).rotr(2)); + EXPECT_EQ(APInt(8, 1), APInt(8, 16).rotr(4)); + EXPECT_EQ(APInt(8, 16), APInt(8, 16).rotr(8)); + + EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(0)); + EXPECT_EQ(APInt(8, 128), APInt(8, 1).rotr(1)); + EXPECT_EQ(APInt(8, 64), APInt(8, 1).rotr(2)); + EXPECT_EQ(APInt(8, 16), APInt(8, 1).rotr(4)); + EXPECT_EQ(APInt(8, 1), APInt(8, 1).rotr(8)); + + APInt Big(256, "00004000800000000000000000003fff8000000000000000", 16); + APInt Rot(256, "3fff80000000000000000000000000000000000040008000", 16); + EXPECT_EQ(Rot, Big.rotr(144)); +} + +TEST(APIntTest, Splat) { + APInt ValA(8, 0x01); + EXPECT_EQ(ValA, APInt::getSplat(8, ValA)); + EXPECT_EQ(APInt(64, 0x0101010101010101ULL), APInt::getSplat(64, ValA)); + + APInt ValB(3, 5); + EXPECT_EQ(APInt(4, 0xD), APInt::getSplat(4, ValB)); + EXPECT_EQ(APInt(15, 0xDB6D), APInt::getSplat(15, ValB)); +} + +TEST(APIntTest, tcDecrement) { + // Test single word decrement. + + // No out borrow. + { + integerPart singleWord = ~integerPart(0) << (integerPartWidth - 1); + integerPart carry = APInt::tcDecrement(&singleWord, 1); + EXPECT_EQ(carry, integerPart(0)); + EXPECT_EQ(singleWord, ~integerPart(0) >> 1); + } + + // With out borrow. + { + integerPart singleWord = 0; + integerPart carry = APInt::tcDecrement(&singleWord, 1); + EXPECT_EQ(carry, integerPart(1)); + EXPECT_EQ(singleWord, ~integerPart(0)); + } + + // Test multiword decrement. + + // No across word borrow, no out borrow. + { + integerPart test[4] = {0x1, 0x1, 0x1, 0x1}; + integerPart expected[4] = {0x0, 0x1, 0x1, 0x1}; + APInt::tcDecrement(test, 4); + EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); + } + + // 1 across word borrow, no out borrow. + { + integerPart test[4] = {0x0, 0xF, 0x1, 0x1}; + integerPart expected[4] = {~integerPart(0), 0xE, 0x1, 0x1}; + integerPart carry = APInt::tcDecrement(test, 4); + EXPECT_EQ(carry, integerPart(0)); + EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); + } + + // 2 across word borrow, no out borrow. + { + integerPart test[4] = {0x0, 0x0, 0xC, 0x1}; + integerPart expected[4] = {~integerPart(0), ~integerPart(0), 0xB, 0x1}; + integerPart carry = APInt::tcDecrement(test, 4); + EXPECT_EQ(carry, integerPart(0)); + EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); + } + + // 3 across word borrow, no out borrow. + { + integerPart test[4] = {0x0, 0x0, 0x0, 0x1}; + integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), 0x0}; + integerPart carry = APInt::tcDecrement(test, 4); + EXPECT_EQ(carry, integerPart(0)); + EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); + } + + // 3 across word borrow, with out borrow. + { + integerPart test[4] = {0x0, 0x0, 0x0, 0x0}; + integerPart expected[4] = {~integerPart(0), ~integerPart(0), ~integerPart(0), ~integerPart(0)}; + integerPart carry = APInt::tcDecrement(test, 4); + EXPECT_EQ(carry, integerPart(1)); + EXPECT_EQ(APInt::tcCompare(test, expected, 4), 0); + } +} + +TEST(APIntTest, arrayAccess) { + // Single word check. + uint64_t E1 = 0x2CA7F46BF6569915ULL; + APInt A1(64, E1); + for (unsigned i = 0, e = 64; i < e; ++i) { + EXPECT_EQ(bool(E1 & (1ULL << i)), + A1[i]); + } + + // Multiword check. + integerPart E2[4] = { + 0xEB6EB136591CBA21ULL, + 0x7B9358BD6A33F10AULL, + 0x7E7FFA5EADD8846ULL, + 0x305F341CA00B613DULL + }; + APInt A2(integerPartWidth*4, E2); + for (unsigned i = 0; i < 4; ++i) { + for (unsigned j = 0; j < integerPartWidth; ++j) { + EXPECT_EQ(bool(E2[i] & (1ULL << j)), + A2[i*integerPartWidth + j]); + } + } +} + +TEST(APIntTest, LargeAPIntConstruction) { + // Check that we can properly construct very large APInt. It is very + // unlikely that people will ever do this, but it is a legal input, + // so we should not crash on it. + APInt A9(UINT32_MAX, 0); + EXPECT_FALSE(A9.getBoolValue()); +} + +TEST(APIntTest, nearestLogBase2) { + // Single word check. + + // Test round up. + uint64_t I1 = 0x1800001; + APInt A1(64, I1); + EXPECT_EQ(A1.nearestLogBase2(), A1.ceilLogBase2()); + + // Test round down. + uint64_t I2 = 0x1000011; + APInt A2(64, I2); + EXPECT_EQ(A2.nearestLogBase2(), A2.logBase2()); + + // Test ties round up. + uint64_t I3 = 0x1800000; + APInt A3(64, I3); + EXPECT_EQ(A3.nearestLogBase2(), A3.ceilLogBase2()); + + // Multiple word check. + + // Test round up. + integerPart I4[4] = {0x0, 0xF, 0x18, 0x0}; + APInt A4(integerPartWidth*4, I4); + EXPECT_EQ(A4.nearestLogBase2(), A4.ceilLogBase2()); + + // Test round down. + integerPart I5[4] = {0x0, 0xF, 0x10, 0x0}; + APInt A5(integerPartWidth*4, I5); + EXPECT_EQ(A5.nearestLogBase2(), A5.logBase2()); + + // Test ties round up. + uint64_t I6[4] = {0x0, 0x0, 0x0, 0x18}; + APInt A6(integerPartWidth*4, I6); + EXPECT_EQ(A6.nearestLogBase2(), A6.ceilLogBase2()); + + // Test BitWidth == 1 special cases. + APInt A7(1, 1); + EXPECT_EQ(A7.nearestLogBase2(), 0ULL); + APInt A8(1, 0); + EXPECT_EQ(A8.nearestLogBase2(), UINT32_MAX); + + // Test the zero case when we have a bit width large enough such + // that the bit width is larger than UINT32_MAX-1. + APInt A9(UINT32_MAX, 0); + EXPECT_EQ(A9.nearestLogBase2(), UINT32_MAX); +} + +TEST(APIntTest, SelfMoveAssignment) { + APInt X(32, 0xdeadbeef); + X = std::move(X); + EXPECT_EQ(32u, X.getBitWidth()); + EXPECT_EQ(0xdeadbeefULL, X.getLimitedValue()); + + uint64_t Bits[] = {0xdeadbeefdeadbeefULL, 0xdeadbeefdeadbeefULL}; + APInt Y(128, Bits); + Y = std::move(Y); + EXPECT_EQ(128u, Y.getBitWidth()); + EXPECT_EQ(~0ULL, Y.getLimitedValue()); + const uint64_t *Raw = Y.getRawData(); + EXPECT_EQ(2u, Y.getNumWords()); + EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]); + EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]); } }