};
public:
+ typedef unsigned size_type;
// Encapsulation of a single bit.
class reference {
SmallBitVector &TheVector;
switchToLarge(new BitVector(*RHS.getPointer()));
}
-#if LLVM_USE_RVALUE_REFERENCES
SmallBitVector(SmallBitVector &&RHS) : X(RHS.X) {
RHS.X = 1;
}
-#endif
~SmallBitVector() {
if (!isSmall())
}
/// count - Returns the number of bits which are set.
- unsigned count() const {
+ size_type count() const {
if (isSmall()) {
uintptr_t Bits = getSmallBits();
- if (sizeof(uintptr_t) * CHAR_BIT == 32)
+ if (NumBaseBits == 32)
return CountPopulation_32(Bits);
- if (sizeof(uintptr_t) * CHAR_BIT == 64)
+ if (NumBaseBits == 64)
return CountPopulation_64(Bits);
llvm_unreachable("Unsupported!");
}
uintptr_t Bits = getSmallBits();
if (Bits == 0)
return -1;
- if (sizeof(uintptr_t) * CHAR_BIT == 32)
- return CountTrailingZeros_32(Bits);
- if (sizeof(uintptr_t) * CHAR_BIT == 64)
- return CountTrailingZeros_64(Bits);
+ if (NumBaseBits == 32)
+ return countTrailingZeros(Bits);
+ if (NumBaseBits == 64)
+ return countTrailingZeros(Bits);
llvm_unreachable("Unsupported!");
}
return getPointer()->find_first();
Bits &= ~uintptr_t(0) << (Prev + 1);
if (Bits == 0 || Prev + 1 >= getSmallSize())
return -1;
- if (sizeof(uintptr_t) * CHAR_BIT == 32)
- return CountTrailingZeros_32(Bits);
- if (sizeof(uintptr_t) * CHAR_BIT == 64)
- return CountTrailingZeros_64(Bits);
+ if (NumBaseBits == 32)
+ return countTrailingZeros(Bits);
+ if (NumBaseBits == 64)
+ return countTrailingZeros(Bits);
llvm_unreachable("Unsupported!");
}
return getPointer()->find_next(Prev);
assert(E <= size() && "Attempted to set out-of-bounds range!");
if (I == E) return *this;
if (isSmall()) {
- uintptr_t EMask = 1 << E;
- uintptr_t IMask = 1 << I;
+ uintptr_t EMask = ((uintptr_t)1) << E;
+ uintptr_t IMask = ((uintptr_t)1) << I;
uintptr_t Mask = EMask - IMask;
setSmallBits(getSmallBits() | Mask);
} else
assert(E <= size() && "Attempted to reset out-of-bounds range!");
if (I == E) return *this;
if (isSmall()) {
- uintptr_t EMask = 1 << E;
- uintptr_t IMask = 1 << I;
+ uintptr_t EMask = ((uintptr_t)1) << E;
+ uintptr_t IMask = ((uintptr_t)1) << I;
uintptr_t Mask = EMask - IMask;
setSmallBits(getSmallBits() & ~Mask);
} else
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())
return *this;
}
-#if LLVM_USE_RVALUE_REFERENCES
const SmallBitVector &operator=(SmallBitVector &&RHS) {
if (this != &RHS) {
clear();
}
return *this;
}
-#endif
void swap(SmallBitVector &RHS) {
std::swap(X, RHS.X);