namespace llvm {
class Constant;
class ConstantIntegral;
+class ConstantInt;
class Type;
class ConstantRange {
///
ConstantRange(const Type *Ty, bool isFullSet = true);
+ /// Initialize a range to hold the single specified value.
+ ///
+ ConstantRange(Constant *Value);
+
/// Initialize a range of values explicitly... this will assert out if
/// Lower==Upper and Lower != Min or Max for its type, if the two constants
/// have different types, or if the constant are not integral values.
/// for example: [100, 8)
///
bool isWrappedSet() const;
+
+ /// contains - Return true if the specified value is in the set.
+ ///
+ bool contains(ConstantInt *Val) const;
/// getSingleElement - If this set contains a single element, return it,
/// otherwise return null.
return !operator==(CR);
}
+ /// subtract - Subtract the specified constant from the endpoints of this
+ /// constant range.
+ ConstantRange subtract(ConstantInt *CI) const;
+
/// intersect - Return the range that results from the intersection of this
/// range with another range. The resultant range is pruned as much as
/// possible, but there may be cases where elements are included that are in
///
ConstantRange unionWith(const ConstantRange &CR) const;
+ /// zeroExtend - Return a new range in the specified integer type, which must
+ /// be strictly larger than the current type. The returned range will
+ /// correspond to the possible range of values if the source range had been
+ /// zero extended.
+ ConstantRange zeroExtend(const Type *Ty) const;
+
+ /// truncate - Return a new range in the specified integer type, which must be
+ /// strictly smaller than the current type. The returned range will
+ /// correspond to the possible range of values if the source range had been
+ /// truncated to the specified type.
+ ConstantRange truncate(const Type *Ty) const;
+
/// print - Print out the bounds to a stream...
///
void print(std::ostream &OS) const;
#include "llvm/Type.h"
using namespace llvm;
+static ConstantIntegral *Next(ConstantIntegral *CI) {
+ if (CI->getType() == Type::BoolTy)
+ return CI == ConstantBool::True ? ConstantBool::False : ConstantBool::True;
+
+ Constant *Result = ConstantExpr::getAdd(CI,
+ ConstantInt::get(CI->getType(), 1));
+ return cast<ConstantIntegral>(Result);
+}
+
static bool LT(ConstantIntegral *A, ConstantIntegral *B) {
- Constant *C = ConstantExpr::get(Instruction::SetLT, A, B);
+ Constant *C = ConstantExpr::getSetLT(A, B);
assert(isa<ConstantBool>(C) && "Constant folding of integrals not impl??");
return cast<ConstantBool>(C)->getValue();
}
-static bool GT(ConstantIntegral *A, ConstantIntegral *B) {
- Constant *C = ConstantExpr::get(Instruction::SetGT, A, B);
+static bool LTE(ConstantIntegral *A, ConstantIntegral *B) {
+ Constant *C = ConstantExpr::getSetLE(A, B);
assert(isa<ConstantBool>(C) && "Constant folding of integrals not impl??");
return cast<ConstantBool>(C)->getValue();
}
+static bool GT(ConstantIntegral *A, ConstantIntegral *B) { return LT(B, A); }
+
static ConstantIntegral *Min(ConstantIntegral *A, ConstantIntegral *B) {
return LT(A, B) ? A : B;
}
return GT(A, B) ? A : B;
}
-
/// Initialize a full (the default) or empty set for the specified type.
///
ConstantRange::ConstantRange(const Type *Ty, bool Full) {
Lower = Upper = ConstantIntegral::getMinValue(Ty);
}
+/// Initialize a range to hold the single specified value.
+///
+ConstantRange::ConstantRange(Constant *V)
+ : Lower(cast<ConstantIntegral>(V)), Upper(Next(cast<ConstantIntegral>(V))) {
+}
+
/// Initialize a range of values explicitly... this will assert out if
/// Lower==Upper and Lower != Min or Max for its type (or if the two constants
/// have different types)
"Lower == Upper, but they aren't min or max for type!");
}
-static ConstantIntegral *Next(ConstantIntegral *CI) {
- if (CI->getType() == Type::BoolTy)
- return CI == ConstantBool::True ? ConstantBool::False : ConstantBool::True;
-
- Constant *Result = ConstantExpr::get(Instruction::Add, CI,
- ConstantInt::get(CI->getType(), 1));
- return cast<ConstantIntegral>(Result);
-}
-
/// Initialize a set of values that all satisfy the condition with C.
///
ConstantRange::ConstantRange(unsigned SetCCOpcode, ConstantIntegral *C) {
}
// Simply subtract the bounds...
- Constant *Result =
- ConstantExpr::get(Instruction::Sub, (Constant*)Upper, (Constant*)Lower);
+ Constant *Result = ConstantExpr::getSub(Upper, Lower);
return cast<ConstantInt>(Result)->getRawValue();
}
+/// contains - Return true if the specified value is in the set.
+///
+bool ConstantRange::contains(ConstantInt *Val) const {
+ if (Lower == Upper) {
+ if (isFullSet()) return true;
+ return false;
+ }
+
+ if (!isWrappedSet())
+ return LTE(Lower, Val) && LT(Val, Upper);
+ return LTE(Lower, Val) || LT(Val, Upper);
+}
+/// subtract - Subtract the specified constant from the endpoints of this
+/// constant range.
+ConstantRange ConstantRange::subtract(ConstantInt *CI) const {
+ assert(CI->getType() == getType() && getType()->isInteger() &&
+ "Cannot subtract from different type range or non-integer!");
+ // If the set is empty or full, don't modify the endpoints.
+ if (Lower == Upper) return *this;
+ return ConstantRange(ConstantExpr::getSub(Lower, CI),
+ ConstantExpr::getSub(Upper, CI));
+}
+
+
// intersect1Wrapped - This helper function is used to intersect two ranges when
// it is known that LHS is wrapped and RHS isn't.
//
return *this;
}
+/// zeroExtend - Return a new range in the specified integer type, which must
+/// be strictly larger than the current type. The returned range will
+/// correspond to the possible range of values if the source range had been
+/// zero extended.
+ConstantRange ConstantRange::zeroExtend(const Type *Ty) const {
+ assert(getLower()->getType()->getPrimitiveSize() < Ty->getPrimitiveSize() &&
+ "Not a value extension");
+ if (isFullSet()) {
+ // Change a source full set into [0, 1 << 8*numbytes)
+ unsigned SrcTySize = getLower()->getType()->getPrimitiveSize();
+ return ConstantRange(Constant::getNullValue(Ty),
+ ConstantUInt::get(Ty, 1ULL << SrcTySize*8));
+ }
+
+ Constant *Lower = getLower();
+ Constant *Upper = getUpper();
+ if (Lower->getType()->isInteger() && !Lower->getType()->isUnsigned()) {
+ // Ensure we are doing a ZERO extension even if the input range is signed.
+ Lower = ConstantExpr::getCast(Lower, Ty->getUnsignedVersion());
+ Upper = ConstantExpr::getCast(Upper, Ty->getUnsignedVersion());
+ }
+
+ return ConstantRange(ConstantExpr::getCast(Lower, Ty),
+ ConstantExpr::getCast(Upper, Ty));
+}
+
+/// truncate - Return a new range in the specified integer type, which must be
+/// strictly smaller than the current type. The returned range will
+/// correspond to the possible range of values if the source range had been
+/// truncated to the specified type.
+ConstantRange ConstantRange::truncate(const Type *Ty) const {
+ assert(getLower()->getType()->getPrimitiveSize() > Ty->getPrimitiveSize() &&
+ "Not a value truncation");
+ uint64_t Size = 1ULL << Ty->getPrimitiveSize()*8;
+ if (isFullSet() || getSetSize() >= Size)
+ return ConstantRange(getType());
+
+ return ConstantRange(ConstantExpr::getCast(getLower(), Ty),
+ ConstantExpr::getCast(getUpper(), Ty));
+}
+
+
/// print - Print out the bounds to a stream...
///
void ConstantRange::print(std::ostream &OS) const {
#include "llvm/Type.h"
using namespace llvm;
+static ConstantIntegral *Next(ConstantIntegral *CI) {
+ if (CI->getType() == Type::BoolTy)
+ return CI == ConstantBool::True ? ConstantBool::False : ConstantBool::True;
+
+ Constant *Result = ConstantExpr::getAdd(CI,
+ ConstantInt::get(CI->getType(), 1));
+ return cast<ConstantIntegral>(Result);
+}
+
static bool LT(ConstantIntegral *A, ConstantIntegral *B) {
- Constant *C = ConstantExpr::get(Instruction::SetLT, A, B);
+ Constant *C = ConstantExpr::getSetLT(A, B);
assert(isa<ConstantBool>(C) && "Constant folding of integrals not impl??");
return cast<ConstantBool>(C)->getValue();
}
-static bool GT(ConstantIntegral *A, ConstantIntegral *B) {
- Constant *C = ConstantExpr::get(Instruction::SetGT, A, B);
+static bool LTE(ConstantIntegral *A, ConstantIntegral *B) {
+ Constant *C = ConstantExpr::getSetLE(A, B);
assert(isa<ConstantBool>(C) && "Constant folding of integrals not impl??");
return cast<ConstantBool>(C)->getValue();
}
+static bool GT(ConstantIntegral *A, ConstantIntegral *B) { return LT(B, A); }
+
static ConstantIntegral *Min(ConstantIntegral *A, ConstantIntegral *B) {
return LT(A, B) ? A : B;
}
return GT(A, B) ? A : B;
}
-
/// Initialize a full (the default) or empty set for the specified type.
///
ConstantRange::ConstantRange(const Type *Ty, bool Full) {
Lower = Upper = ConstantIntegral::getMinValue(Ty);
}
+/// Initialize a range to hold the single specified value.
+///
+ConstantRange::ConstantRange(Constant *V)
+ : Lower(cast<ConstantIntegral>(V)), Upper(Next(cast<ConstantIntegral>(V))) {
+}
+
/// Initialize a range of values explicitly... this will assert out if
/// Lower==Upper and Lower != Min or Max for its type (or if the two constants
/// have different types)
"Lower == Upper, but they aren't min or max for type!");
}
-static ConstantIntegral *Next(ConstantIntegral *CI) {
- if (CI->getType() == Type::BoolTy)
- return CI == ConstantBool::True ? ConstantBool::False : ConstantBool::True;
-
- Constant *Result = ConstantExpr::get(Instruction::Add, CI,
- ConstantInt::get(CI->getType(), 1));
- return cast<ConstantIntegral>(Result);
-}
-
/// Initialize a set of values that all satisfy the condition with C.
///
ConstantRange::ConstantRange(unsigned SetCCOpcode, ConstantIntegral *C) {
}
// Simply subtract the bounds...
- Constant *Result =
- ConstantExpr::get(Instruction::Sub, (Constant*)Upper, (Constant*)Lower);
+ Constant *Result = ConstantExpr::getSub(Upper, Lower);
return cast<ConstantInt>(Result)->getRawValue();
}
+/// contains - Return true if the specified value is in the set.
+///
+bool ConstantRange::contains(ConstantInt *Val) const {
+ if (Lower == Upper) {
+ if (isFullSet()) return true;
+ return false;
+ }
+
+ if (!isWrappedSet())
+ return LTE(Lower, Val) && LT(Val, Upper);
+ return LTE(Lower, Val) || LT(Val, Upper);
+}
+/// subtract - Subtract the specified constant from the endpoints of this
+/// constant range.
+ConstantRange ConstantRange::subtract(ConstantInt *CI) const {
+ assert(CI->getType() == getType() && getType()->isInteger() &&
+ "Cannot subtract from different type range or non-integer!");
+ // If the set is empty or full, don't modify the endpoints.
+ if (Lower == Upper) return *this;
+ return ConstantRange(ConstantExpr::getSub(Lower, CI),
+ ConstantExpr::getSub(Upper, CI));
+}
+
+
// intersect1Wrapped - This helper function is used to intersect two ranges when
// it is known that LHS is wrapped and RHS isn't.
//
return *this;
}
+/// zeroExtend - Return a new range in the specified integer type, which must
+/// be strictly larger than the current type. The returned range will
+/// correspond to the possible range of values if the source range had been
+/// zero extended.
+ConstantRange ConstantRange::zeroExtend(const Type *Ty) const {
+ assert(getLower()->getType()->getPrimitiveSize() < Ty->getPrimitiveSize() &&
+ "Not a value extension");
+ if (isFullSet()) {
+ // Change a source full set into [0, 1 << 8*numbytes)
+ unsigned SrcTySize = getLower()->getType()->getPrimitiveSize();
+ return ConstantRange(Constant::getNullValue(Ty),
+ ConstantUInt::get(Ty, 1ULL << SrcTySize*8));
+ }
+
+ Constant *Lower = getLower();
+ Constant *Upper = getUpper();
+ if (Lower->getType()->isInteger() && !Lower->getType()->isUnsigned()) {
+ // Ensure we are doing a ZERO extension even if the input range is signed.
+ Lower = ConstantExpr::getCast(Lower, Ty->getUnsignedVersion());
+ Upper = ConstantExpr::getCast(Upper, Ty->getUnsignedVersion());
+ }
+
+ return ConstantRange(ConstantExpr::getCast(Lower, Ty),
+ ConstantExpr::getCast(Upper, Ty));
+}
+
+/// truncate - Return a new range in the specified integer type, which must be
+/// strictly smaller than the current type. The returned range will
+/// correspond to the possible range of values if the source range had been
+/// truncated to the specified type.
+ConstantRange ConstantRange::truncate(const Type *Ty) const {
+ assert(getLower()->getType()->getPrimitiveSize() > Ty->getPrimitiveSize() &&
+ "Not a value truncation");
+ uint64_t Size = 1ULL << Ty->getPrimitiveSize()*8;
+ if (isFullSet() || getSetSize() >= Size)
+ return ConstantRange(getType());
+
+ return ConstantRange(ConstantExpr::getCast(getLower(), Ty),
+ ConstantExpr::getCast(getUpper(), Ty));
+}
+
+
/// print - Print out the bounds to a stream...
///
void ConstantRange::print(std::ostream &OS) const {
#include "llvm/Type.h"
using namespace llvm;
+static ConstantIntegral *Next(ConstantIntegral *CI) {
+ if (CI->getType() == Type::BoolTy)
+ return CI == ConstantBool::True ? ConstantBool::False : ConstantBool::True;
+
+ Constant *Result = ConstantExpr::getAdd(CI,
+ ConstantInt::get(CI->getType(), 1));
+ return cast<ConstantIntegral>(Result);
+}
+
static bool LT(ConstantIntegral *A, ConstantIntegral *B) {
- Constant *C = ConstantExpr::get(Instruction::SetLT, A, B);
+ Constant *C = ConstantExpr::getSetLT(A, B);
assert(isa<ConstantBool>(C) && "Constant folding of integrals not impl??");
return cast<ConstantBool>(C)->getValue();
}
-static bool GT(ConstantIntegral *A, ConstantIntegral *B) {
- Constant *C = ConstantExpr::get(Instruction::SetGT, A, B);
+static bool LTE(ConstantIntegral *A, ConstantIntegral *B) {
+ Constant *C = ConstantExpr::getSetLE(A, B);
assert(isa<ConstantBool>(C) && "Constant folding of integrals not impl??");
return cast<ConstantBool>(C)->getValue();
}
+static bool GT(ConstantIntegral *A, ConstantIntegral *B) { return LT(B, A); }
+
static ConstantIntegral *Min(ConstantIntegral *A, ConstantIntegral *B) {
return LT(A, B) ? A : B;
}
return GT(A, B) ? A : B;
}
-
/// Initialize a full (the default) or empty set for the specified type.
///
ConstantRange::ConstantRange(const Type *Ty, bool Full) {
Lower = Upper = ConstantIntegral::getMinValue(Ty);
}
+/// Initialize a range to hold the single specified value.
+///
+ConstantRange::ConstantRange(Constant *V)
+ : Lower(cast<ConstantIntegral>(V)), Upper(Next(cast<ConstantIntegral>(V))) {
+}
+
/// Initialize a range of values explicitly... this will assert out if
/// Lower==Upper and Lower != Min or Max for its type (or if the two constants
/// have different types)
"Lower == Upper, but they aren't min or max for type!");
}
-static ConstantIntegral *Next(ConstantIntegral *CI) {
- if (CI->getType() == Type::BoolTy)
- return CI == ConstantBool::True ? ConstantBool::False : ConstantBool::True;
-
- Constant *Result = ConstantExpr::get(Instruction::Add, CI,
- ConstantInt::get(CI->getType(), 1));
- return cast<ConstantIntegral>(Result);
-}
-
/// Initialize a set of values that all satisfy the condition with C.
///
ConstantRange::ConstantRange(unsigned SetCCOpcode, ConstantIntegral *C) {
}
// Simply subtract the bounds...
- Constant *Result =
- ConstantExpr::get(Instruction::Sub, (Constant*)Upper, (Constant*)Lower);
+ Constant *Result = ConstantExpr::getSub(Upper, Lower);
return cast<ConstantInt>(Result)->getRawValue();
}
+/// contains - Return true if the specified value is in the set.
+///
+bool ConstantRange::contains(ConstantInt *Val) const {
+ if (Lower == Upper) {
+ if (isFullSet()) return true;
+ return false;
+ }
+
+ if (!isWrappedSet())
+ return LTE(Lower, Val) && LT(Val, Upper);
+ return LTE(Lower, Val) || LT(Val, Upper);
+}
+/// subtract - Subtract the specified constant from the endpoints of this
+/// constant range.
+ConstantRange ConstantRange::subtract(ConstantInt *CI) const {
+ assert(CI->getType() == getType() && getType()->isInteger() &&
+ "Cannot subtract from different type range or non-integer!");
+ // If the set is empty or full, don't modify the endpoints.
+ if (Lower == Upper) return *this;
+ return ConstantRange(ConstantExpr::getSub(Lower, CI),
+ ConstantExpr::getSub(Upper, CI));
+}
+
+
// intersect1Wrapped - This helper function is used to intersect two ranges when
// it is known that LHS is wrapped and RHS isn't.
//
return *this;
}
+/// zeroExtend - Return a new range in the specified integer type, which must
+/// be strictly larger than the current type. The returned range will
+/// correspond to the possible range of values if the source range had been
+/// zero extended.
+ConstantRange ConstantRange::zeroExtend(const Type *Ty) const {
+ assert(getLower()->getType()->getPrimitiveSize() < Ty->getPrimitiveSize() &&
+ "Not a value extension");
+ if (isFullSet()) {
+ // Change a source full set into [0, 1 << 8*numbytes)
+ unsigned SrcTySize = getLower()->getType()->getPrimitiveSize();
+ return ConstantRange(Constant::getNullValue(Ty),
+ ConstantUInt::get(Ty, 1ULL << SrcTySize*8));
+ }
+
+ Constant *Lower = getLower();
+ Constant *Upper = getUpper();
+ if (Lower->getType()->isInteger() && !Lower->getType()->isUnsigned()) {
+ // Ensure we are doing a ZERO extension even if the input range is signed.
+ Lower = ConstantExpr::getCast(Lower, Ty->getUnsignedVersion());
+ Upper = ConstantExpr::getCast(Upper, Ty->getUnsignedVersion());
+ }
+
+ return ConstantRange(ConstantExpr::getCast(Lower, Ty),
+ ConstantExpr::getCast(Upper, Ty));
+}
+
+/// truncate - Return a new range in the specified integer type, which must be
+/// strictly smaller than the current type. The returned range will
+/// correspond to the possible range of values if the source range had been
+/// truncated to the specified type.
+ConstantRange ConstantRange::truncate(const Type *Ty) const {
+ assert(getLower()->getType()->getPrimitiveSize() > Ty->getPrimitiveSize() &&
+ "Not a value truncation");
+ uint64_t Size = 1ULL << Ty->getPrimitiveSize()*8;
+ if (isFullSet() || getSetSize() >= Size)
+ return ConstantRange(getType());
+
+ return ConstantRange(ConstantExpr::getCast(getLower(), Ty),
+ ConstantExpr::getCast(getUpper(), Ty));
+}
+
+
/// print - Print out the bounds to a stream...
///
void ConstantRange::print(std::ostream &OS) const {
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