Update aosp/master llvm for rebase to r233350

[android-x86/external-llvm.git] / unittests / ADT / APIntTest.cpp

diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp
index 8198c71..acdc1ec 100644 (file)
--- a/unittests/ADT/APIntTest.cpp
+++ b/unittests/ADT/APIntTest.cpp
@@ -209,6 +209,206 @@ TEST(APIntTest, i1) {
   }
 }
 
+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, 0), APInt(32,   "0", 2));
   EXPECT_EQ(APInt(32, 1), APInt(32,   "1", 2));
@@ -678,6 +878,54 @@ TEST(APIntTest, nearestLogBase2) {
   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);
@@ -694,5 +942,8 @@ TEST(APIntTest, SelfMoveAssignment) {
   EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[0]);
   EXPECT_EQ(0xdeadbeefdeadbeefULL, Raw[1]);
 }
-
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#pragma clang diagnostic pop
+#endif
 }