llvm::SCEVIntegralCastExpr

This is the base class for unary integral cast operator classes.

Synopsis

Declared in <llvm/Analysis/ScalarEvolutionExpressions.h>

class SCEVIntegralCastExpr
    : public SCEVCastExpr

Base Classes

NameDescription
SCEVCastExprThis is the base class for unary cast operator classes.

Type Aliases

NameDescription
NoWrapFlags SCEV no-wrap flags; alias of SCEVNoWrapFlags.

Member Functions

NameDescription
operator= [deleted]Deleted copy assignment.
computeAndSetCanonical Compute and set the canonical SCEV, by constructing a SCEV with the same operands, but all SCEVUse flags dropped.
dump This method is used for debugging.
getCanonical Return the canonical SCEV.
getExpressionSize Return the estimated size of this SCEV's expression tree.
getNumOperands Return the number of operands (always 1).
getOperand getOperand overloads
getSCEVType Return the SCEV opcode of this expression.
getType Return the LLVM type of this SCEV expression.
isAllOnesValue Return true if the expression is a constant all-ones value.
isNonConstantNegative Return true if the specified scev is negated, but not a constant.
isOne Return true if the expression is a constant one.
isZero Return true if the expression is a constant zero.
operands Return the single-element operand array for this cast.
print Print this SCEV to OS.

Static Member Functions

NameDescription
classof Methods for support type inquiry through isa, cast, and dyn_cast.

Static Data Members

NameDescription
FlagAnyWrap No wrap guarantee.
FlagNSW No signed wrap.
FlagNUW No unsigned wrap.
FlagNW No self-wrap.
NoWrapMask Mask of all no-wrap flag bits.

Protected Member Functions

NameDescription
SCEVIntegralCastExpr [constructor]Construct a unary integral cast SCEV of kind SCEVTy.

Protected Data Members

NameDescription
CanonicalSCEV Pointer to the canonical version of the SCEV, i.e. one where all operands have no SCEVUse flags.
ExpressionSize Estimated complexity of this node's expression tree size.
Op The single cast operand.
SubclassData This field is initialized to zero and may be used in subclasses to store miscellaneous information.
Ty Immutable type of the SCEV.

Non-Member Functions

NameDescription
SCEVExprContainsReturn true if any node in Root satisfies the predicate Pred.
cannotBeMaxInLoopReturns true if S is defined and never is equal to signed/unsigned max.
cannotBeMinInLoopReturns true if S is defined and never is equal to signed/unsigned min.
denormalizeForPostIncUseDenormalize S to be post-increment for all loops present in Loops.
isDereferenceableAndAlignedInLoopOverload for isDereferenceableAndAlignedInLoop taking the pointer and access size directly as SCEVs.
isKnownNegativeInLoopReturns true if we can prove that S is defined and always negative in loop L.
isKnownNonNegativeInLoopReturns true if we can prove that S is defined and always non-negative in loop L.
isKnownNonPositiveInLoopReturns true if we can prove that S is defined and always non-positive in loop L.
isKnownPositiveInLoopReturns true if we can prove that S is defined and always positive in loop L.
normalizeForPostIncUseNormalize S to be post-increment for all loops present in Loops.
normalizeForPostIncUseIfNormalize S for all add recurrence sub-expressions for which Pred returns true.
visitAllUse SCEVTraversal to visit all nodes in the given expression tree.
SCEVPatternMatch::m_SCEVMatch a SCEV, capturing it if we match.
SCEVPatternMatch::m_scev_SpecificMatch if we have a specific specified SCEV.
SCEVPatternMatch::matchMatch SCEV S against pattern P.

Derived Classes

NameDescription
SCEVSignExtendExpr This class represents a sign extension of a small integer value to a larger integer value.
SCEVTruncateExpr This class represents a truncation of an integer value to a smaller integer value.
SCEVZeroExtendExpr This class represents a zero extension of a small integer value to a larger integer value.