#include "llvm/ADT/APInt.h"
#include "llvm/ADT/SmallString.h"
#include "gtest/gtest.h"
+#include <array>
#include <ostream>
using namespace llvm;
namespace {
+TEST(APIntTest, ValueInit) {
+ APInt Zero = APInt();
+ EXPECT_TRUE(!Zero);
+ EXPECT_TRUE(!Zero.zext(64));
+ EXPECT_TRUE(!Zero.sext(64));
+}
+
// Test that APInt shift left works when bitwidth > 64 and shiftamt == 0
TEST(APIntTest, ShiftLeftByZero) {
APInt One = APInt::getNullValue(65) + 1;
EXPECT_EQ(one, neg_one);
EXPECT_EQ(two, neg_two);
+ // Min/max signed values.
+ EXPECT_TRUE(zero.isMaxSignedValue());
+ EXPECT_FALSE(one.isMaxSignedValue());
+ EXPECT_FALSE(zero.isMinSignedValue());
+ EXPECT_TRUE(one.isMinSignedValue());
+
// Additions.
EXPECT_EQ(two, one + one);
EXPECT_EQ(zero, neg_one + one);
}
}
-TEST(APIntTest, divrem_big1) {
- // Tests KnuthDiv rare step D6
- APInt a{256, "1ffffffffffffffff", 16};
- APInt b{256, "1ffffffffffffffff", 16};
- APInt c{256, 0};
+TEST(APIntTest, compare) {
+ std::array<APInt, 5> testVals{{
+ APInt{16, 2},
+ APInt{16, 1},
+ APInt{16, 0},
+ APInt{16, (uint64_t)-1, true},
+ APInt{16, (uint64_t)-2, true},
+ }};
+
+ for (auto &arg1 : testVals)
+ for (auto &arg2 : testVals) {
+ auto uv1 = arg1.getZExtValue();
+ auto uv2 = arg2.getZExtValue();
+ auto sv1 = arg1.getSExtValue();
+ auto sv2 = arg2.getSExtValue();
+
+ EXPECT_EQ(uv1 < uv2, arg1.ult(arg2));
+ EXPECT_EQ(uv1 <= uv2, arg1.ule(arg2));
+ EXPECT_EQ(uv1 > uv2, arg1.ugt(arg2));
+ EXPECT_EQ(uv1 >= uv2, arg1.uge(arg2));
+
+ EXPECT_EQ(sv1 < sv2, arg1.slt(arg2));
+ EXPECT_EQ(sv1 <= sv2, arg1.sle(arg2));
+ EXPECT_EQ(sv1 > sv2, arg1.sgt(arg2));
+ EXPECT_EQ(sv1 >= sv2, arg1.sge(arg2));
+
+ EXPECT_EQ(uv1 < uv2, arg1.ult(uv2));
+ EXPECT_EQ(uv1 <= uv2, arg1.ule(uv2));
+ EXPECT_EQ(uv1 > uv2, arg1.ugt(uv2));
+ EXPECT_EQ(uv1 >= uv2, arg1.uge(uv2));
+
+ EXPECT_EQ(sv1 < sv2, arg1.slt(sv2));
+ EXPECT_EQ(sv1 <= sv2, arg1.sle(sv2));
+ EXPECT_EQ(sv1 > sv2, arg1.sgt(sv2));
+ EXPECT_EQ(sv1 >= sv2, arg1.sge(sv2));
+ }
+}
+
+TEST(APIntTest, compareWithRawIntegers) {
+ EXPECT_TRUE(!APInt(8, 1).uge(256));
+ EXPECT_TRUE(!APInt(8, 1).ugt(256));
+ EXPECT_TRUE( APInt(8, 1).ule(256));
+ EXPECT_TRUE( APInt(8, 1).ult(256));
+ EXPECT_TRUE(!APInt(8, 1).sge(256));
+ EXPECT_TRUE(!APInt(8, 1).sgt(256));
+ EXPECT_TRUE( APInt(8, 1).sle(256));
+ EXPECT_TRUE( APInt(8, 1).slt(256));
+ EXPECT_TRUE(!(APInt(8, 0) == 256));
+ EXPECT_TRUE( APInt(8, 0) != 256);
+ EXPECT_TRUE(!(APInt(8, 1) == 256));
+ EXPECT_TRUE( APInt(8, 1) != 256);
+
+ auto uint64max = UINT64_MAX;
+ auto int64max = INT64_MAX;
+ auto int64min = INT64_MIN;
+
+ auto u64 = APInt{128, uint64max};
+ auto s64 = APInt{128, static_cast<uint64_t>(int64max), true};
+ auto big = u64 + 1;
+
+ EXPECT_TRUE( u64.uge(uint64max));
+ EXPECT_TRUE(!u64.ugt(uint64max));
+ EXPECT_TRUE( u64.ule(uint64max));
+ EXPECT_TRUE(!u64.ult(uint64max));
+ EXPECT_TRUE( u64.sge(int64max));
+ EXPECT_TRUE( u64.sgt(int64max));
+ EXPECT_TRUE(!u64.sle(int64max));
+ EXPECT_TRUE(!u64.slt(int64max));
+ EXPECT_TRUE( u64.sge(int64min));
+ EXPECT_TRUE( u64.sgt(int64min));
+ EXPECT_TRUE(!u64.sle(int64min));
+ EXPECT_TRUE(!u64.slt(int64min));
+
+ EXPECT_TRUE(u64 == uint64max);
+ EXPECT_TRUE(u64 != int64max);
+ EXPECT_TRUE(u64 != int64min);
+
+ EXPECT_TRUE(!s64.uge(uint64max));
+ EXPECT_TRUE(!s64.ugt(uint64max));
+ EXPECT_TRUE( s64.ule(uint64max));
+ EXPECT_TRUE( s64.ult(uint64max));
+ EXPECT_TRUE( s64.sge(int64max));
+ EXPECT_TRUE(!s64.sgt(int64max));
+ EXPECT_TRUE( s64.sle(int64max));
+ EXPECT_TRUE(!s64.slt(int64max));
+ EXPECT_TRUE( s64.sge(int64min));
+ EXPECT_TRUE( s64.sgt(int64min));
+ EXPECT_TRUE(!s64.sle(int64min));
+ EXPECT_TRUE(!s64.slt(int64min));
+
+ EXPECT_TRUE(s64 != uint64max);
+ EXPECT_TRUE(s64 == int64max);
+ EXPECT_TRUE(s64 != int64min);
+
+ EXPECT_TRUE( big.uge(uint64max));
+ EXPECT_TRUE( big.ugt(uint64max));
+ EXPECT_TRUE(!big.ule(uint64max));
+ EXPECT_TRUE(!big.ult(uint64max));
+ EXPECT_TRUE( big.sge(int64max));
+ EXPECT_TRUE( big.sgt(int64max));
+ EXPECT_TRUE(!big.sle(int64max));
+ EXPECT_TRUE(!big.slt(int64max));
+ EXPECT_TRUE( big.sge(int64min));
+ EXPECT_TRUE( big.sgt(int64min));
+ EXPECT_TRUE(!big.sle(int64min));
+ EXPECT_TRUE(!big.slt(int64min));
+
+ EXPECT_TRUE(big != uint64max);
+ EXPECT_TRUE(big != int64max);
+ EXPECT_TRUE(big != int64min);
+}
+
+TEST(APIntTest, compareWithInt64Min) {
+ int64_t edge = INT64_MIN;
+ int64_t edgeP1 = edge + 1;
+ int64_t edgeM1 = INT64_MAX;
+ auto a = APInt{64, static_cast<uint64_t>(edge), true};
+
+ EXPECT_TRUE(!a.slt(edge));
+ EXPECT_TRUE( a.sle(edge));
+ EXPECT_TRUE(!a.sgt(edge));
+ EXPECT_TRUE( a.sge(edge));
+ EXPECT_TRUE( a.slt(edgeP1));
+ EXPECT_TRUE( a.sle(edgeP1));
+ EXPECT_TRUE(!a.sgt(edgeP1));
+ EXPECT_TRUE(!a.sge(edgeP1));
+ EXPECT_TRUE( a.slt(edgeM1));
+ EXPECT_TRUE( a.sle(edgeM1));
+ EXPECT_TRUE(!a.sgt(edgeM1));
+ EXPECT_TRUE(!a.sge(edgeM1));
+}
+
+TEST(APIntTest, compareWithHalfInt64Max) {
+ uint64_t edge = 0x4000000000000000;
+ uint64_t edgeP1 = edge + 1;
+ uint64_t edgeM1 = edge - 1;
+ auto a = APInt{64, edge};
+
+ EXPECT_TRUE(!a.ult(edge));
+ EXPECT_TRUE( a.ule(edge));
+ EXPECT_TRUE(!a.ugt(edge));
+ EXPECT_TRUE( a.uge(edge));
+ EXPECT_TRUE( a.ult(edgeP1));
+ EXPECT_TRUE( a.ule(edgeP1));
+ EXPECT_TRUE(!a.ugt(edgeP1));
+ EXPECT_TRUE(!a.uge(edgeP1));
+ EXPECT_TRUE(!a.ult(edgeM1));
+ EXPECT_TRUE(!a.ule(edgeM1));
+ EXPECT_TRUE( a.ugt(edgeM1));
+ EXPECT_TRUE( a.uge(edgeM1));
+
+ EXPECT_TRUE(!a.slt(edge));
+ EXPECT_TRUE( a.sle(edge));
+ EXPECT_TRUE(!a.sgt(edge));
+ EXPECT_TRUE( a.sge(edge));
+ EXPECT_TRUE( a.slt(edgeP1));
+ EXPECT_TRUE( a.sle(edgeP1));
+ EXPECT_TRUE(!a.sgt(edgeP1));
+ EXPECT_TRUE(!a.sge(edgeP1));
+ EXPECT_TRUE(!a.slt(edgeM1));
+ EXPECT_TRUE(!a.sle(edgeM1));
+ EXPECT_TRUE( a.sgt(edgeM1));
+ EXPECT_TRUE( a.sge(edgeM1));
+}
+
+
+// Tests different div/rem varaints using scheme (a * b + c) / a
+void testDiv(APInt a, APInt b, APInt c) {
+ ASSERT_TRUE(a.uge(b)); // Must: a >= b
+ ASSERT_TRUE(a.ugt(c)); // Must: a > c
auto p = a * b + c;
+
auto q = p.udiv(a);
auto r = p.urem(a);
- EXPECT_EQ(q, b);
- EXPECT_EQ(r, c);
+ EXPECT_EQ(b, q);
+ EXPECT_EQ(c, r);
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);
+ EXPECT_EQ(b, q);
+ EXPECT_EQ(c, r);
q = p.sdiv(a);
r = p.srem(a);
- EXPECT_EQ(q, b);
- EXPECT_EQ(r, c);
+ EXPECT_EQ(b, q);
+ EXPECT_EQ(c, r);
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);
+ EXPECT_EQ(b, q);
+ EXPECT_EQ(c, r);
+
+ if (b.ugt(c)) { // Test also symmetric case
+ q = p.udiv(b);
+ r = p.urem(b);
+ EXPECT_EQ(a, q);
+ EXPECT_EQ(c, r);
+ APInt::udivrem(p, b, q, r);
+ EXPECT_EQ(a, q);
+ EXPECT_EQ(c, r);
+ q = p.sdiv(b);
+ r = p.srem(b);
+ EXPECT_EQ(a, q);
+ EXPECT_EQ(c, r);
+ APInt::sdivrem(p, b, q, r);
+ EXPECT_EQ(a, q);
+ EXPECT_EQ(c, r);
+ }
}
-TEST(APIntTest, divrem_big2) {
+TEST(APIntTest, divrem_big1) {
// 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};
+ testDiv({256, "1ffffffffffffffff", 16},
+ {256, "1ffffffffffffffff", 16},
+ {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
+ testDiv({1024, "112233ceff"
+ "cecece000000ffffffffffffffffffff"
+ "ffffffffffffffffffffffffffffffff"
+ "ffffffffffffffffffffffffffffffff"
+ "ffffffffffffffffffffffffffffff33", 16},
+ {1024, "111111ffffffffffffffff"
+ "ffffffffffffffffffffffffffffffff"
+ "fffffffffffffffffffffffffffffccf"
+ "ffffffffffffffffffffffffffffff00", 16},
+ {1024, 7919});
}
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);
+ testDiv({256, "80000001ffffffffffffffff", 16},
+ {256, "ffffffffffffff0000000", 16},
+ {256, 4219});
}
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);
+ testDiv(APInt{4096, 5}.shl(2001),
+ APInt{4096, 1}.shl(2000),
+ APInt{4096, 4219*13});
}
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};
+ testDiv(APInt{1024, 19}.shl(811),
+ APInt{1024, 4356013}, // one word
+ 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, divrem_big6) {
+ // Tests some rare "borrow" cases in D4 step
+ testDiv(APInt{512, "ffffffffffffffff00000000000000000000000001", 16},
+ APInt{512, "10000000000000001000000000000001", 16},
+ APInt{512, "10000000000000000000000000000000", 16});
+}
+
+TEST(APIntTest, divrem_big7) {
+ // Yet another test for KnuthDiv rare step D6.
+ testDiv({224, "800000008000000200000005", 16},
+ {224, "fffffffd", 16},
+ {224, "80000000800000010000000f", 16});
}
TEST(APIntTest, fromString) {
projects / oota-llvm.git / blobdiff