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Added additional overloaded operators for APSInt to match the operators of

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APInt.

While some operators were already specifically overloaded for APSInt, others
resulted in using the overloaded operator methods in APInt, which would result
in the signedness bit being lost.

Modified the APSInt(APInt&) constructor to be "explicit" and to take an
extra (optional) flag to indicate the signedness.  Making the ctor explicit
will catch any implicit conversations between APSInt -> APInt -> APSInt that
results in the signedness flag being lost.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46316 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek 2008-01-24 18:59:52 +00:00
parent fd68750038
commit cadf873c83
1 changed files with 125 additions and 25 deletions
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150
include/llvm/ADT/APSInt.h
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@ -26,7 +26,9 @@ public:
/// APSInt ctor - Create an APSInt with the specified width, default to
/// unsigned.
explicit APSInt(uint32_t BitWidth) : APInt(BitWidth, 0), IsUnsigned(true) {}
APSInt(const APInt &I) : APInt(I), IsUnsigned(true) {}
explicit APSInt(const APInt &I, bool isUnsigned = true)
: APInt(I), IsUnsigned(isUnsigned) {}
APSInt &operator=(const APSInt &RHS) {
APInt::operator=(RHS);
@ -58,6 +60,21 @@ public:
return APInt::toString(Radix, isSigned());
}
APSInt& extend(uint32_t width) {
if (IsUnsigned)
zext(width);
else
sext(width);
return *this;
}
APSInt& extOrTrunc(uint32_t width) {
if (IsUnsigned)
zextOrTrunc(width);
else
sextOrTrunc(width);
return *this;
}
const APSInt &operator%=(const APSInt &RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
@ -77,36 +94,19 @@ public:
}
APSInt operator%(const APSInt &RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return IsUnsigned ? urem(RHS) : srem(RHS);
return IsUnsigned ? APSInt(urem(RHS), true) : APSInt(srem(RHS), false);
}
APSInt operator/(const APSInt &RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return IsUnsigned ? udiv(RHS) : sdiv(RHS);
}
const APSInt &operator>>=(unsigned Amt) {
*this = *this >> Amt;
return *this;
}
APSInt& extend(uint32_t width) {
if (IsUnsigned)
zext(width);
else
sext(width);
return *this;
}
APSInt& extOrTrunc(uint32_t width) {
if (IsUnsigned)
zextOrTrunc(width);
else
sextOrTrunc(width);
return *this;
return IsUnsigned ? APSInt(udiv(RHS), true) : APSInt(sdiv(RHS), false);
}
APSInt operator>>(unsigned Amt) const {
return IsUnsigned ? lshr(Amt) : ashr(Amt);
return IsUnsigned ? APSInt(lshr(Amt), true) : APSInt(ashr(Amt), false);
}
APSInt& operator>>=(unsigned Amt) {
*this = *this >> Amt;
return *this;
}
inline bool operator<(const APSInt& RHS) const {
@ -126,6 +126,106 @@ public:
return IsUnsigned ? uge(RHS) : sge(RHS);
}
// The remaining operators just wrap the logic of APInt, but retain the
// signedness information.
APSInt operator<<(unsigned Bits) {
return APSInt(static_cast<APInt&>(*this) << Bits, IsUnsigned);
}
APSInt& operator<<=(unsigned Amt) {
*this = *this << Amt;
return *this;
}
APSInt& operator++() {
static_cast<APInt&>(*this)++;
return *this;
}
APSInt& operator--() {
static_cast<APInt&>(*this)++;
return *this;
}
APSInt operator++(int) {
return APSInt(++static_cast<APInt&>(*this), IsUnsigned);
}
APSInt operator--(int) {
return APSInt(--static_cast<APInt&>(*this), IsUnsigned);
}
APSInt operator-() const {
return APSInt(-static_cast<const APInt&>(*this), IsUnsigned);
}
APSInt& operator+=(const APSInt& RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
static_cast<APInt&>(*this) += RHS;
return *this;
}
APSInt& operator-=(const APSInt& RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
static_cast<APInt&>(*this) -= RHS;
return *this;
}
APSInt& operator*=(const APSInt& RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
static_cast<APInt&>(*this) *= RHS;
return *this;
}
APSInt& operator&=(const APSInt& RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
static_cast<APInt&>(*this) &= RHS;
return *this;
}
APSInt& operator|=(const APSInt& RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
static_cast<APInt&>(*this) |= RHS;
return *this;
}
APSInt& operator^=(const APSInt& RHS) {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
static_cast<APInt&>(*this) ^= RHS;
return *this;
}
APSInt operator&(const APSInt& RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return APSInt(static_cast<const APInt&>(*this) & RHS, IsUnsigned);
}
APSInt And(const APSInt& RHS) const {
return this->operator&(RHS);
}
APSInt operator|(const APSInt& RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return APSInt(static_cast<const APInt&>(*this) | RHS, IsUnsigned);
}
APSInt Or(const APSInt& RHS) const {
return this->operator|(RHS);
}
APSInt operator^(const APSInt& RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return APSInt(static_cast<const APInt&>(*this) ^ RHS, IsUnsigned);
}
APSInt Xor(const APSInt& RHS) const {
return this->operator^(RHS);
}
APSInt operator*(const APSInt& RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return APSInt(static_cast<const APInt&>(*this) * RHS, IsUnsigned);
}
APSInt operator+(const APSInt& RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return APSInt(static_cast<const APInt&>(*this) + RHS, IsUnsigned);
}
APSInt operator-(const APSInt& RHS) const {
assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
return APSInt(static_cast<const APInt&>(*this) - RHS, IsUnsigned);
}
APSInt operator~() {
return APSInt(~static_cast<const APInt&>(*this), IsUnsigned);
}
/// Profile - Used to insert APSInt objects, or objects that contain APSInt
/// objects, into FoldingSets.
void Profile(FoldingSetNodeID& ID) const;