llvm::RecurKind

Synopsis

Declared in <llvm/Analysis/IVDescriptors.h>

enum class RecurKind : int;

Members

Name	Description
`None`	Not a recurrence.
`Add`	Sum of integers.
`Sub`	Subtraction of integers
`AddChainWithSubs`	A chain of adds and subs
`Mul`	Product of integers.
`Or`	Bitwise or logical OR of integers.
`And`	Bitwise or logical AND of integers.
`Xor`	Bitwise or logical XOR of integers.
`SMin`	Signed integer min implemented in terms of select(cmp()).
`SMax`	Signed integer max implemented in terms of select(cmp()).
`UMin`	Unsigned integer min implemented in terms of select(cmp()).
`UMax`	Unsigned integer max implemented in terms of select(cmp()).
`FAdd`	Sum of floats.
`FAddChainWithSubs`	A chain of fadds and fsubs.
`FSub`	Subtraction of floats.
`FMul`	Product of floats.
`FMin`	FP min implemented in terms of select(cmp()).
`FMax`	FP max implemented in terms of select(cmp()).
`FMinNum`	FP min with llvm.minnum semantics including NaNs.
`FMaxNum`	FP max with llvm.maxnum semantics including NaNs.
`FMinimum`	FP min with llvm.minimum semantics
`FMaximum`	FP max with llvm.maximum semantics
`FMinimumNum`	FP min with llvm.minimumnum semantics
`FMaximumNum`	FP max with llvm.maximumnum semantics
`FMulAdd`	Sum of float products with llvm.fmuladd(a * b + sum).
`AnyOf`	AnyOf reduction with select(cmp(),x,y) where one of (x,y) is loop invariant, and both x and y are integer type.
`FindIV`	FindIV reduction with select(icmp(),x,y) where one of (x,y) is a loop induction variable (increasing or decreasing), and both x and y are integer type. The signedness and direction are stored separately.
`FindLast`	FindLast reduction with select(cmp(),x,y) where x and y are an integer type, one is the current recurrence value, and the other is an arbitrary value.

Non-Member Functions

Name	Description
`getMinMaxReductionIntrinsicOp`	Returns the min/max intrinsic used when expanding a min/max reduction.
`getMinMaxReductionPredicate`	Returns the comparison predicate used when expanding a min/max reduction.
`getMinMaxReductionRecurKind`	Returns the recurence kind used when expanding a min/max reduction.
`getRecurrenceIdentity`	Given information about an recurrence kind, return the identity for the llvm.vector.reduce.* used to generate it.
`getReductionIntrinsicID`	Returns the llvm.vector.reduce intrinsic that corresponds to the recurrence kind.