//
//===----------------------------------------------------------------------===//
-#include <ostream>
-#include "gtest/gtest.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/SmallString.h"
+#include "gtest/gtest.h"
+#include <ostream>
using namespace llvm;
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) {
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, static_cast<uint64_t>(-2), true);
EXPECT_EQ(0u, i33minus2.countLeadingZeros());
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());
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);
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, divrem_big1) {
+ // Tests KnuthDiv rare step D6
+ APInt a{256, "1ffffffffffffffff", 16};
+ APInt b{256, "1ffffffffffffffff", 16};
+ APInt c{256, 0};
+
+ auto p = a * b + c;
+ auto q = p.udiv(a);
+ auto r = p.urem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.udiv(b);
+ r = p.urem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(a);
+ r = p.srem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(b);
+ r = p.srem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+}
+
+TEST(APIntTest, divrem_big2) {
+ // Tests KnuthDiv rare step D6
+ APInt a{1024, "111111ffffffffffffffff"
+ "ffffffffffffffffffffffffffffffff"
+ "fffffffffffffffffffffffffffffccf"
+ "ffffffffffffffffffffffffffffff00", 16};
+ APInt b{1024, "112233ceff"
+ "cecece000000ffffffffffffffffffff"
+ "ffffffffffffffffffffffffffffffff"
+ "ffffffffffffffffffffffffffffffff"
+ "ffffffffffffffffffffffffffffff33", 16};
+ APInt c{1024, 7919};
+
+ auto p = a * b + c;
+ auto q = p.udiv(a);
+ auto r = p.urem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.udiv(b);
+ r = p.urem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(a);
+ r = p.srem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(b);
+ r = p.srem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+}
+
+TEST(APIntTest, divrem_big3) {
+ // Tests KnuthDiv case without shift
+ APInt a{256, "ffffffffffffff0000000", 16};
+ APInt b{256, "80000001ffffffffffffffff", 16};
+ APInt c{256, 4219};
+
+ auto p = a * b + c;
+ auto q = p.udiv(a);
+ auto r = p.urem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.udiv(b);
+ r = p.urem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(a);
+ r = p.srem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(b);
+ r = p.srem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+}
+
+TEST(APIntTest, divrem_big4) {
+ // Tests heap allocation in divide() enfoced by huge numbers
+ auto a = APInt{4096, 1}.shl(2000);
+ auto b = APInt{4096, 5}.shl(2001);
+ auto c = APInt{4096, 4219*13};
+
+ auto p = a * b + c;
+ auto q = p.udiv(a);
+ auto r = p.urem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = APInt{1024, 0}; // test non-single word APInt conversion in divide()
+ r = APInt{1024, 0};
+ APInt::udivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.udiv(b);
+ r = p.urem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = APInt{1024, 0};
+ r = APInt{1024, 0};
+ APInt::udivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(a);
+ r = p.srem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = APInt{1024, 0};
+ r = APInt{1024, 0};
+ APInt::sdivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(b);
+ r = p.srem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = APInt{1024, 0};
+ r = APInt{1024, 0};
+ APInt::sdivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+}
+
+TEST(APIntTest, divrem_big5) {
+ // Tests one word divisor case of divide()
+ auto a = APInt{1024, 19}.shl(811);
+ auto b = APInt{1024, 4356013}; // one word
+ auto c = APInt{1024, 1};
+
+ auto p = a * b + c;
+ auto q = p.udiv(a);
+ auto r = p.urem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.udiv(b);
+ r = p.urem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::udivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(a);
+ r = p.srem(a);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, a, q, r);
+ EXPECT_EQ(q, b);
+ EXPECT_EQ(r, c);
+ q = p.sdiv(b);
+ r = p.srem(b);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
+ APInt::sdivrem(p, b, q, r);
+ EXPECT_EQ(q, a);
+ EXPECT_EQ(r, c);
}
TEST(APIntTest, fromString) {
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<uint64_t>(1)));
}
TEST(APIntTest, StringBitsNeeded2) {
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(), 2);
- EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3);
+ 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(), 3);
- EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3);
+ 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(), 3);
- EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4);
+ 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, or 16!");
+ 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, "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, IsSplat) {
+ APInt A(32, 0x01010101);
+ EXPECT_FALSE(A.isSplat(1));
+ EXPECT_FALSE(A.isSplat(2));
+ EXPECT_FALSE(A.isSplat(4));
+ EXPECT_TRUE(A.isSplat(8));
+ EXPECT_TRUE(A.isSplat(16));
+ EXPECT_TRUE(A.isSplat(32));
+
+ APInt B(24, 0xAAAAAA);
+ EXPECT_FALSE(B.isSplat(1));
+ EXPECT_TRUE(B.isSplat(2));
+ EXPECT_TRUE(B.isSplat(4));
+ EXPECT_TRUE(B.isSplat(8));
+ EXPECT_TRUE(B.isSplat(24));
+
+ APInt C(24, 0xABAAAB);
+ EXPECT_FALSE(C.isSplat(1));
+ EXPECT_FALSE(C.isSplat(2));
+ EXPECT_FALSE(C.isSplat(4));
+ EXPECT_FALSE(C.isSplat(8));
+ EXPECT_TRUE(C.isSplat(24));
+
+ APInt D(32, 0xABBAABBA);
+ EXPECT_FALSE(D.isSplat(1));
+ EXPECT_FALSE(D.isSplat(2));
+ EXPECT_FALSE(D.isSplat(4));
+ EXPECT_FALSE(D.isSplat(8));
+ EXPECT_TRUE(D.isSplat(16));
+ EXPECT_TRUE(D.isSplat(32));
+
+ APInt E(32, 0);
+ EXPECT_TRUE(E.isSplat(1));
+ EXPECT_TRUE(E.isSplat(2));
+ EXPECT_TRUE(E.isSplat(4));
+ EXPECT_TRUE(E.isSplat(8));
+ EXPECT_TRUE(E.isSplat(16));
+ EXPECT_TRUE(E.isSplat(32));
+}
+
+#if defined(__clang__)
+// Disable the pragma warning from versions of Clang without -Wself-move
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-pragmas"
+// Disable the warning that triggers on exactly what is being tested.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wself-move"
+#endif
+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]);
+}
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#pragma clang diagnostic pop
+#endif
}
projects / oota-llvm.git / blobdiff