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Sync SmallBitVector with BitVector. Add unit tests for the missing methods.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186123 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2013-07-11 21:59:16 +00:00
parent 7042aa598d
commit 459d7bf8f6
2 changed files with 70 additions and 0 deletions
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34
include/llvm/ADT/SmallBitVector.h
View File

@ -426,6 +426,40 @@ public:
return *this;
}
/// reset - Reset bits that are set in RHS. Same as *this &= ~RHS.
SmallBitVector &reset(const SmallBitVector &RHS) {
if (isSmall() && RHS.isSmall())
setSmallBits(getSmallBits() & ~RHS.getSmallBits());
else if (!isSmall() && !RHS.isSmall())
getPointer()->reset(*RHS.getPointer());
else
for (unsigned i = 0, e = std::min(size(), RHS.size()); i != e; ++i)
if (RHS.test(i))
reset(i);
return *this;
}
/// test - Check if (This - RHS) is zero.
/// This is the same as reset(RHS) and any().
bool test(const SmallBitVector &RHS) const {
if (isSmall() && RHS.isSmall())
return (getSmallBits() & ~RHS.getSmallBits()) != 0;
if (!isSmall() && !RHS.isSmall())
return getPointer()->test(*RHS.getPointer());
unsigned i, e;
for (i = 0, e = std::min(size(), RHS.size()); i != e; ++i)
if (test(i) && !RHS.test(i))
return true;
for (e = size(); i != e; ++i)
if (test(i))
return true;
return false;
}
SmallBitVector &operator|=(const SmallBitVector &RHS) {
resize(std::max(size(), RHS.size()));
if (isSmall())

36
unittests/ADT/BitVectorTest.cpp
View File

@ -357,5 +357,41 @@ TYPED_TEST(BitVectorTest, RangeOps) {
EXPECT_TRUE( E.test(32));
EXPECT_FALSE(E.test(33));
}
TYPED_TEST(BitVectorTest, CompoundTestReset) {
TypeParam A(50, true);
TypeParam B(50, false);
TypeParam C(100, true);
TypeParam D(100, false);
EXPECT_FALSE(A.test(A));
EXPECT_TRUE(A.test(B));
EXPECT_FALSE(A.test(C));
EXPECT_TRUE(A.test(D));
EXPECT_FALSE(B.test(A));
EXPECT_FALSE(B.test(B));
EXPECT_FALSE(B.test(C));
EXPECT_FALSE(B.test(D));
EXPECT_TRUE(C.test(A));
EXPECT_TRUE(C.test(B));
EXPECT_FALSE(C.test(C));
EXPECT_TRUE(C.test(D));
A.reset(B);
A.reset(D);
EXPECT_TRUE(A.all());
A.reset(A);
EXPECT_TRUE(A.none());
A.set();
A.reset(C);
EXPECT_TRUE(A.none());
A.set();
C.reset(A);
EXPECT_EQ(50, C.find_first());
C.reset(C);
EXPECT_TRUE(C.none());
}
}
#endif