EXPECT_TRUE(LHS.intersectWith(RHS) == LHS);
// previous bug: intersection of [min, 3) and [2, max) should be 2
- LHS = ConstantRange(APInt(32, -2147483648), APInt(32, 3));
- RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483648));
+ LHS = ConstantRange(APInt(32, -2147483646), APInt(32, 3));
+ RHS = ConstantRange(APInt(32, 2), APInt(32, 2147483646));
EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2)));
+
+ // [2, 0) /\ [4, 3) = [2, 0)
+ LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
+ RHS = ConstantRange(APInt(32, 4), APInt(32, 3));
+ EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 2), APInt(32, 0)));
+
+ // [2, 0) /\ [4, 2) = [4, 0)
+ LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
+ RHS = ConstantRange(APInt(32, 4), APInt(32, 2));
+ EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 0)));
+
+ // [4, 2) /\ [5, 1) = [5, 1)
+ LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
+ RHS = ConstantRange(APInt(32, 5), APInt(32, 1));
+ EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 5), APInt(32, 1)));
+
+ // [2, 0) /\ [7, 4) = [7, 4)
+ LHS = ConstantRange(APInt(32, 2), APInt(32, 0));
+ RHS = ConstantRange(APInt(32, 7), APInt(32, 4));
+ EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 7), APInt(32, 4)));
+
+ // [4, 2) /\ [1, 0) = [1, 0)
+ LHS = ConstantRange(APInt(32, 4), APInt(32, 2));
+ RHS = ConstantRange(APInt(32, 1), APInt(32, 0));
+ EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 4), APInt(32, 2)));
+
+ // [15, 0) /\ [7, 6) = [15, 0)
+ LHS = ConstantRange(APInt(32, 15), APInt(32, 0));
+ RHS = ConstantRange(APInt(32, 7), APInt(32, 6));
+ EXPECT_EQ(LHS.intersectWith(RHS), ConstantRange(APInt(32, 15), APInt(32, 0)));
}
TEST_F(ConstantRangeTest, UnionWith) {