1.7.6.1Copyright © 2003-2014 University of Illinois at Urbana-Champaign. All Rights Reserved.
LLVM API Documentation
#include <ConstantRange.h>
ConstantRange - This class represents an range of values.
Definition at line 42 of file ConstantRange.h.
| ConstantRange::ConstantRange | ( | uint32_t | BitWidth, |
| bool | Full = true |
||
| ) | [explicit] |
Initialize a full (the default) or empty set for the specified bit width.
Initialize a full (the default) or empty set for the specified type.
Definition at line 32 of file ConstantRange.cpp.
References llvm::APInt::getMaxValue(), and llvm::APInt::getMinValue().
Referenced by add(), binaryAnd(), binaryOr(), intersectWith(), inverse(), lshr(), makeICmpRegion(), multiply(), shl(), signExtend(), smax(), sub(), subtract(), truncate(), udiv(), umax(), unionWith(), and zeroExtend().
Initialize a range to hold the single specified value.
Definition at line 41 of file ConstantRange.cpp.
| ConstantRange::ConstantRange | ( | APIntMoveTy | Lower, |
| APIntMoveTy | Upper | ||
| ) |
Initialize a range of values explicitly. This will assert out if Lower==Upper and Lower != Min or Max value for its type. It will also assert out if the two APInt's are not the same bit width.
Definition at line 44 of file ConstantRange.cpp.
References llvm::APInt::getBitWidth(), llvm::APInt::isMaxValue(), and llvm::APInt::isMinValue().
| ConstantRange ConstantRange::add | ( | const ConstantRange & | Other | ) | const |
add - Return a new range representing the possible values resulting from an addition of a value in this range and a value in Other.
Definition at line 539 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getLower(), getSetSize(), getUpper(), isEmptySet(), isFullSet(), llvm::APInt::ult(), and llvm::X.
Referenced by llvm::ScalarEvolution::getSignedRange(), and llvm::ScalarEvolution::getUnsignedRange().
| ConstantRange ConstantRange::binaryAnd | ( | const ConstantRange & | Other | ) | const |
binaryAnd - return a new range representing the possible values resulting from a binary-and of a value in this range by a value in Other.
Definition at line 656 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), llvm::APInt::getNullValue(), getUnsignedMax(), llvm::APInt::isAllOnesValue(), isEmptySet(), and llvm::APIntOps::umin().
| ConstantRange ConstantRange::binaryOr | ( | const ConstantRange & | Other | ) | const |
binaryOr - return a new range representing the possible values resulting from a binary-or of a value in this range by a value in Other.
Definition at line 669 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), llvm::APInt::getNullValue(), getUnsignedMin(), isEmptySet(), llvm::APInt::isMinValue(), and umax().
| bool ConstantRange::contains | ( | const APInt & | V | ) | const |
contains - Return true if the specified value is in the set.
Definition at line 209 of file ConstantRange.cpp.
References isFullSet(), isWrappedSet(), llvm::APInt::ule(), and llvm::APInt::ult().
Referenced by llvm::SCEVAddRecExpr::getNumIterationsInRange(), getPredicateResult(), llvm::ScalarEvolution::getSignExtendExpr(), llvm::ScalarEvolution::getZeroExtendExpr(), isSignWrappedSet(), and SimplifyICmpInst().
| bool ConstantRange::contains | ( | const ConstantRange & | Other | ) | const |
contains - Return true if the other range is a subset of this one.
contains - Return true if the argument is a subset of this range. Two equal sets contain each other. The empty set contained by all other sets.
Definition at line 222 of file ConstantRange.cpp.
References getLower(), getUpper(), isEmptySet(), isFullSet(), isWrappedSet(), and llvm::APInt::ule().
| ConstantRange ConstantRange::difference | ( | const ConstantRange & | CR | ) | const |
Subtract the specified range from this range (aka relative complement of the sets).
Definition at line 252 of file ConstantRange.cpp.
References intersectWith(), and inverse().
Referenced by getEdgeValueLocal().
| void ConstantRange::dump | ( | ) | const |
dump - Allow printing from a debugger easily...
Definition at line 732 of file ConstantRange.cpp.
References llvm::dbgs(), and print().
| uint32_t llvm::ConstantRange::getBitWidth | ( | ) | const [inline] |
getBitWidth - get the bit width of this ConstantRange
Definition at line 82 of file ConstantRange.h.
References llvm::APInt::getBitWidth().
Referenced by add(), binaryAnd(), binaryOr(), getSetSize(), getSignedMax(), getSignedMin(), getUnsignedMax(), getUnsignedMin(), intersectWith(), inverse(), isSignWrappedSet(), lshr(), makeICmpRegion(), multiply(), sextOrTrunc(), shl(), signExtend(), smax(), sub(), subtract(), truncate(), udiv(), umax(), unionWith(), zeroExtend(), and zextOrTrunc().
| const APInt& llvm::ConstantRange::getLower | ( | ) | const [inline] |
getLower - Return the lower value for this range...
Definition at line 74 of file ConstantRange.h.
Referenced by add(), contains(), GatherConstantCompares(), llvm::SCEVAddRecExpr::getNumIterationsInRange(), getSignedMax(), getSignedMin(), getUnsignedMin(), isContiguous(), makeICmpRegion(), sub(), tryMergeRange(), udiv(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
| APInt ConstantRange::getSetSize | ( | ) | const |
getSetSize - Return the number of elements in this set.
Definition at line 146 of file ConstantRange.cpp.
References getBitWidth(), isFullSet(), llvm::APInt::setBit(), and llvm::APInt::zext().
Referenced by add(), GatherConstantCompares(), intersectWith(), and sub().
| APInt ConstantRange::getSignedMax | ( | ) | const |
getSignedMax - Return the largest signed value contained in the ConstantRange.
Definition at line 178 of file ConstantRange.cpp.
References getBitWidth(), getLower(), llvm::APInt::getSignedMaxValue(), getUpper(), and isWrappedSet().
Referenced by getOverflowLimitForStep(), llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::isKnownNegative(), llvm::ScalarEvolution::isKnownNonPositive(), makeICmpRegion(), llvm::ScalarEvolution::SimplifyICmpOperands(), and smax().
| APInt ConstantRange::getSignedMin | ( | ) | const |
getSignedMin - Return the smallest signed value contained in the ConstantRange.
Definition at line 193 of file ConstantRange.cpp.
References getBitWidth(), getLower(), llvm::APInt::getSignedMinValue(), getUpper(), and isWrappedSet().
Referenced by getOverflowLimitForStep(), llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::isKnownNonNegative(), llvm::ScalarEvolution::isKnownPositive(), makeICmpRegion(), llvm::ScalarEvolution::SimplifyICmpOperands(), and smax().
| const APInt* llvm::ConstantRange::getSingleElement | ( | ) | const [inline] |
getSingleElement - If this set contains a single element, return it, otherwise return null.
Definition at line 114 of file ConstantRange.h.
Referenced by llvm::LazyValueInfo::getConstant(), llvm::LazyValueInfo::getConstantOnEdge(), and isSingleElement().
| APInt ConstantRange::getUnsignedMax | ( | ) | const |
getUnsignedMax - Return the largest unsigned value contained in the ConstantRange.
Definition at line 160 of file ConstantRange.cpp.
References getBitWidth(), llvm::APInt::getMaxValue(), getUpper(), isFullSet(), and isWrappedSet().
Referenced by binaryAnd(), llvm::ScalarEvolution::getUnsignedRange(), lshr(), makeICmpRegion(), multiply(), shl(), llvm::ScalarEvolution::SimplifyICmpOperands(), udiv(), and umax().
| APInt ConstantRange::getUnsignedMin | ( | ) | const |
getUnsignedMin - Return the smallest unsigned value contained in the ConstantRange.
Definition at line 169 of file ConstantRange.cpp.
References getBitWidth(), getLower(), llvm::APInt::getMinValue(), getUpper(), isFullSet(), and isWrappedSet().
Referenced by binaryOr(), llvm::ScalarEvolution::getUnsignedRange(), lshr(), makeICmpRegion(), multiply(), shl(), llvm::ScalarEvolution::SimplifyICmpOperands(), udiv(), and umax().
| const APInt& llvm::ConstantRange::getUpper | ( | ) | const [inline] |
getUpper - Return the upper value for this range...
Definition at line 78 of file ConstantRange.h.
Referenced by add(), contains(), GatherConstantCompares(), llvm::SCEVAddRecExpr::getNumIterationsInRange(), getSignedMax(), getSignedMin(), getUnsignedMax(), getUnsignedMin(), isContiguous(), makeICmpRegion(), sub(), tryMergeRange(), udiv(), and llvm::InstCombiner::visitICmpInstWithInstAndIntCst().
| ConstantRange ConstantRange::intersectWith | ( | const ConstantRange & | CR | ) | const |
intersectWith - Return the range that results from the intersection of this range with another range. The resultant range is guaranteed to include all elements contained in both input ranges, and to have the smallest possible set size that does so. Because there may be two intersections with the same set size, A.intersectWith(B) might not be equal to B.intersectWith(A).
Definition at line 261 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getSetSize(), intersectWith(), isEmptySet(), isFullSet(), isWrappedSet(), llvm::APInt::ule(), and llvm::APInt::ult().
Referenced by canBeMerged(), difference(), llvm::InstCombiner::FoldAndOfICmps(), and intersectWith().
| ConstantRange ConstantRange::inverse | ( | ) | const |
inverse - Return a new range that is the logical not of the current set.
Definition at line 711 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), isEmptySet(), and isFullSet().
Referenced by difference(), GatherConstantCompares(), getPredicateResult(), getValueFromFromCondition(), and SimplifyICmpInst().
| bool ConstantRange::isEmptySet | ( | ) | const |
isEmptySet - Return true if this set contains no members.
Definition at line 125 of file ConstantRange.cpp.
References llvm::APInt::isMinValue().
Referenced by add(), binaryAnd(), binaryOr(), canBeMerged(), contains(), llvm::InstCombiner::FoldAndOfICmps(), GatherConstantCompares(), intersectWith(), inverse(), lshr(), makeICmpRegion(), multiply(), print(), shl(), signExtend(), SimplifyICmpInst(), smax(), sub(), truncate(), udiv(), umax(), unionWith(), and zeroExtend().
| bool ConstantRange::isFullSet | ( | ) | const |
isFullSet - Return true if this set contains all of the elements possible for this data-type
Definition at line 119 of file ConstantRange.cpp.
References llvm::APInt::isMaxValue().
Referenced by add(), contains(), llvm::MDNode::getMostGenericRange(), llvm::SCEVAddRecExpr::getNumIterationsInRange(), getSetSize(), getUnsignedMax(), getUnsignedMin(), intersectWith(), inverse(), print(), signExtend(), SimplifyICmpInst(), sub(), truncate(), udiv(), unionWith(), and zeroExtend().
| bool ConstantRange::isSignWrappedSet | ( | ) | const |
isSignWrappedSet - Return true if this set wraps around the INT_MIN of its bitwidth, for example: i8 [120, 140).
Definition at line 139 of file ConstantRange.cpp.
References contains(), getBitWidth(), llvm::APInt::getSignedMaxValue(), and llvm::APInt::getSignedMinValue().
Referenced by signExtend().
| bool llvm::ConstantRange::isSingleElement | ( | ) | const [inline] |
isSingleElement - Return true if this set contains exactly one member.
Definition at line 122 of file ConstantRange.h.
References getSingleElement().
Referenced by getPredicateResult(), and makeICmpRegion().
| bool ConstantRange::isWrappedSet | ( | ) | const |
isWrappedSet - Return true if this set wraps around the top of the range, for example: [100, 8)
Definition at line 132 of file ConstantRange.cpp.
References llvm::APInt::ugt().
Referenced by contains(), getSignedMax(), getSignedMin(), getUnsignedMax(), getUnsignedMin(), intersectWith(), truncate(), unionWith(), and zeroExtend().
| ConstantRange ConstantRange::lshr | ( | const ConstantRange & | Other | ) | const |
lshr - Return a new range representing the possible values resulting from a logical right shift of a value in this range and a value in Other.
Definition at line 699 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getUnsignedMax(), getUnsignedMin(), isEmptySet(), and llvm::APInt::lshr().
| ConstantRange ConstantRange::makeICmpRegion | ( | unsigned | Pred, |
| const ConstantRange & | Other | ||
| ) | [static] |
makeICmpRegion - Produce the smallest range that contains all values that might satisfy the comparison specified by Pred when compared to any value contained within Other.
Solves for range X in 'for all x in X, there exists a y in Y such that icmp op x, y is true'. Every value that might make the comparison true is included in the resulting range.
Definition at line 52 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getLower(), llvm::APInt::getMinValue(), llvm::APInt::getNullValue(), getSignedMax(), getSignedMin(), llvm::APInt::getSignedMinValue(), getUnsignedMax(), getUnsignedMin(), getUpper(), llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_NE, llvm::CmpInst::ICMP_SGE, llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLE, llvm::CmpInst::ICMP_SLT, llvm::CmpInst::ICMP_UGE, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULE, llvm::CmpInst::ICMP_ULT, isEmptySet(), isSingleElement(), and llvm_unreachable.
Referenced by llvm::InstCombiner::FoldAndOfICmps(), GatherConstantCompares(), and getValueFromFromCondition().
| ConstantRange ConstantRange::multiply | ( | const ConstantRange & | Other | ) | const |
multiply - Return a new range representing the possible values resulting from a multiplication of a value in this range and a value in Other. TODO: This isn't fully implemented yet.
Definition at line 581 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getUnsignedMax(), getUnsignedMin(), isEmptySet(), truncate(), and llvm::APInt::zext().
Referenced by llvm::ScalarEvolution::getSignedRange(), and llvm::ScalarEvolution::getUnsignedRange().
| bool llvm::ConstantRange::operator!= | ( | const ConstantRange & | CR | ) | const [inline] |
Definition at line 153 of file ConstantRange.h.
References operator==().
| bool llvm::ConstantRange::operator== | ( | const ConstantRange & | CR | ) | const [inline] |
operator== - Return true if this range is equal to another range.
Definition at line 150 of file ConstantRange.h.
Referenced by operator!=().
| void ConstantRange::print | ( | raw_ostream & | OS | ) | const |
print - Print out the bounds to a stream...
Definition at line 721 of file ConstantRange.cpp.
References isEmptySet(), and isFullSet().
Referenced by dump(), and llvm::operator<<().
| ConstantRange ConstantRange::sextOrTrunc | ( | uint32_t | DstTySize | ) | const |
sextOrTrunc - make this range have the bit width given by BitWidth. The value is sign extended, truncated, or left alone to make it that width.
sextOrTrunc - make this range have the bit width given by DstTySize. The value is sign extended, truncated, or left alone to make it that width.
Definition at line 529 of file ConstantRange.cpp.
References getBitWidth(), signExtend(), and truncate().
Referenced by llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::getSignExtendExpr(), and llvm::ScalarEvolution::getUnsignedRange().
| ConstantRange ConstantRange::shl | ( | const ConstantRange & | Other | ) | const |
shl - Return a new range representing the possible values resulting from a left shift of a value in this range by a value in Other. TODO: This isn't fully implemented yet.
Definition at line 682 of file ConstantRange.cpp.
References ConstantRange(), llvm::countLeadingZeros(), getBitWidth(), getUnsignedMax(), getUnsignedMin(), isEmptySet(), llvm::APInt::shl(), and llvm::APInt::ugt().
| ConstantRange ConstantRange::signExtend | ( | uint32_t | DstTySize | ) | const |
signExtend - 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 sign extended to BitWidth.
signExtend - 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 as if the source range had been sign extended.
Definition at line 443 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), llvm::APInt::getHighBitsSet(), llvm::APInt::getLowBitsSet(), isEmptySet(), isFullSet(), llvm::APInt::isMinSignedValue(), isSignWrappedSet(), llvm::APInt::sext(), and llvm::APInt::zext().
Referenced by llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::getSignExtendExpr(), llvm::ScalarEvolution::getUnsignedRange(), and sextOrTrunc().
| ConstantRange ConstantRange::smax | ( | const ConstantRange & | Other | ) | const |
smax - Return a new range representing the possible values resulting from a signed maximum of a value in this range and a value in Other.
Definition at line 601 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getSignedMax(), getSignedMin(), and isEmptySet().
Referenced by llvm::ScalarEvolution::getSignedRange(), and llvm::ScalarEvolution::getUnsignedRange().
| ConstantRange ConstantRange::sub | ( | const ConstantRange & | Other | ) | const |
sub - Return a new range representing the possible values resulting from a subtraction of a value in this range and a value in Other.
Definition at line 560 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getLower(), getSetSize(), getUpper(), isEmptySet(), isFullSet(), llvm::APInt::ult(), and llvm::X.
| ConstantRange ConstantRange::subtract | ( | const APInt & | Val | ) | const |
subtract - Subtract the specified constant from the endpoints of this constant range.
Definition at line 242 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), and llvm::APInt::getBitWidth().
Referenced by GatherConstantCompares(), llvm::SCEVAddRecExpr::getNumIterationsInRange(), and getValueFromFromCondition().
| ConstantRange ConstantRange::truncate | ( | uint32_t | DstTySize | ) | 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.
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 as if the source range had been truncated to the specified type.
Definition at line 465 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), llvm::APInt::getMaxValue(), isEmptySet(), isFullSet(), isWrappedSet(), llvm::APInt::setBit(), llvm::APInt::trunc(), llvm::APInt::udivrem(), llvm::APInt::uge(), llvm::APInt::ule(), llvm::APInt::ult(), unionWith(), and llvm::APInt::zext().
Referenced by llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::getSignExtendExpr(), llvm::ScalarEvolution::getUnsignedRange(), llvm::ScalarEvolution::getZeroExtendExpr(), multiply(), sextOrTrunc(), and zextOrTrunc().
| ConstantRange ConstantRange::udiv | ( | const ConstantRange & | Other | ) | const |
udiv - Return a new range representing the possible values resulting from an unsigned division of a value in this range and a value in Other.
Definition at line 627 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getLower(), getUnsignedMax(), getUnsignedMin(), getUpper(), isEmptySet(), isFullSet(), and llvm::APInt::udiv().
Referenced by llvm::ScalarEvolution::getSignedRange(), and llvm::ScalarEvolution::getUnsignedRange().
| ConstantRange ConstantRange::umax | ( | const ConstantRange & | Other | ) | const |
umax - Return a new range representing the possible values resulting from an unsigned maximum of a value in this range and a value in Other.
Definition at line 614 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), getUnsignedMax(), getUnsignedMin(), and isEmptySet().
Referenced by binaryOr(), llvm::ScalarEvolution::getSignedRange(), and llvm::ScalarEvolution::getUnsignedRange().
| ConstantRange ConstantRange::unionWith | ( | const ConstantRange & | CR | ) | const |
unionWith - Return the range that results from the union of this range with another range. The resultant range is guaranteed to include the elements of both sets, but may contain more. For example, [3, 9) union [12,15) is [3, 15), which includes 9, 10, and 11, which were not included in either set before.
Definition at line 342 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), if(), isEmptySet(), isFullSet(), isWrappedSet(), llvm::APInt::uge(), llvm::APInt::ugt(), llvm::APInt::ule(), llvm::APInt::ult(), and unionWith().
Referenced by getEdgeValueLocal(), truncate(), tryMergeRange(), and unionWith().
| ConstantRange ConstantRange::zeroExtend | ( | uint32_t | DstTySize | ) | 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 to BitWidth.
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 as if the source range had been zero extended.
Definition at line 423 of file ConstantRange.cpp.
References ConstantRange(), getBitWidth(), llvm::APInt::getOneBitSet(), isEmptySet(), isFullSet(), isWrappedSet(), and llvm::APInt::zext().
Referenced by llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::getUnsignedRange(), llvm::ScalarEvolution::getZeroExtendExpr(), and zextOrTrunc().
| ConstantRange ConstantRange::zextOrTrunc | ( | uint32_t | DstTySize | ) | const |
zextOrTrunc - make this range have the bit width given by BitWidth. The value is zero extended, truncated, or left alone to make it that width.
zextOrTrunc - make this range have the bit width given by DstTySize. The value is zero extended, truncated, or left alone to make it that width.
Definition at line 518 of file ConstantRange.cpp.
References getBitWidth(), truncate(), and zeroExtend().
Referenced by llvm::ScalarEvolution::getSignedRange(), llvm::ScalarEvolution::getUnsignedRange(), and llvm::ScalarEvolution::getZeroExtendExpr().
Generated on Thu Sep 18 2014 04:06:57 for LLVM by
1.7.6.1
Copyright © 2003-2014 University of Illinois at Urbana-Champaign.
All Rights Reserved.