mlir::intrange Namespace Reference

Namespaces
	detail

Typedefs
using	InferRangeFn = std::function< ConstantIntRanges(ArrayRef< ConstantIntRanges >)>
	Function that performs inference on an array of ConstantIntRanges, abstracted away here to permit writing the function that handles both 64- and 32-bit index types. More...
using	InferIntegerValueRangeFn = std::function< IntegerValueRange(ArrayRef< IntegerValueRange >)>
	Function that performs inferrence on an array of IntegerValueRange. More...
using	InferRangeWithOvfFlagsFn = function_ref< ConstantIntRanges(ArrayRef< ConstantIntRanges >, OverflowFlags)>
	Function that performs inference on an array of ConstantIntRanges while taking special overflow behavior into account. More...

Enumerations
enum class	CmpMode : uint32_t { Both , Signed , Unsigned }
enum class	OverflowFlags : uint32_t { None = 0 , Nsw = 1 , Nuw = 2 }
enum class	CmpPredicate : uint64_t {   eq , ne , slt , sle ,   sgt , sge , ult , ule ,   ugt , uge }
	Copy of the enum from arith and index to allow the common integer range infrastructure to not depend on either dialect. More...

Functions
ConstantIntRanges	inferIndexOp (const InferRangeFn &inferFn, ArrayRef< ConstantIntRanges > argRanges, CmpMode mode)
	Compute inferFn on ranges, whose size should be the index storage bitwidth. More...
ConstantIntRanges	extRange (const ConstantIntRanges &range, unsigned destWidth)
	Independently zero-extend the unsigned values and sign-extend the signed values in range to destWidth bits, returning the resulting range. More...
ConstantIntRanges	extUIRange (const ConstantIntRanges &range, unsigned destWidth)
	Use the unsigned values in range to zero-extend it to destWidth. More...
ConstantIntRanges	extSIRange (const ConstantIntRanges &range, unsigned destWidth)
	Use the signed values in range to sign-extend it to destWidth. More...
ConstantIntRanges	truncRange (const ConstantIntRanges &range, unsigned destWidth)
	Truncate range to destWidth bits, taking care to handle cases such as the truncation of [255, 256] to i8 not being a uniform range. More...
ConstantIntRanges	inferAdd (ArrayRef< ConstantIntRanges > argRanges, OverflowFlags ovfFlags=OverflowFlags::None)
ConstantIntRanges	inferSub (ArrayRef< ConstantIntRanges > argRanges, OverflowFlags ovfFlags=OverflowFlags::None)
ConstantIntRanges	inferMul (ArrayRef< ConstantIntRanges > argRanges, OverflowFlags ovfFlags=OverflowFlags::None)
ConstantIntRanges	inferDivS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferDivU (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferCeilDivS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferCeilDivU (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferFloorDivS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferRemS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferRemU (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferMaxS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferMaxU (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferMinS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferMinU (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferAnd (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferOr (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferXor (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferShl (ArrayRef< ConstantIntRanges > argRanges, OverflowFlags ovfFlags=OverflowFlags::None)
ConstantIntRanges	inferShrS (ArrayRef< ConstantIntRanges > argRanges)
ConstantIntRanges	inferShrU (ArrayRef< ConstantIntRanges > argRanges)
std::optional< bool >	evaluatePred (CmpPredicate pred, const ConstantIntRanges &lhs, const ConstantIntRanges &rhs)
	Returns a boolean value if pred is statically true or false for anypossible inputs falling within lhs and rhs, and std::nullopt if the value of the predicate cannot be determined. More...

Variables
static constexpr unsigned	indexMinWidth = 32
static constexpr unsigned	indexMaxWidth = 64

Typedef Documentation

InferIntegerValueRangeFn

using mlir::intrange::InferIntegerValueRangeFn = typedef std::function<IntegerValueRange(ArrayRef<IntegerValueRange>)>

Function that performs inferrence on an array of IntegerValueRange.

Definition at line 31 of file InferIntRangeCommon.h.

InferRangeFn

using mlir::intrange::InferRangeFn = typedef std::function<ConstantIntRanges(ArrayRef<ConstantIntRanges>)>

Function that performs inference on an array of ConstantIntRanges, abstracted away here to permit writing the function that handles both 64- and 32-bit index types.

Definition at line 27 of file InferIntRangeCommon.h.

InferRangeWithOvfFlagsFn

using mlir::intrange::InferRangeWithOvfFlagsFn = typedef function_ref<ConstantIntRanges(ArrayRef<ConstantIntRanges>, OverflowFlags)>

Function that performs inference on an array of ConstantIntRanges while taking special overflow behavior into account.

Definition at line 48 of file InferIntRangeCommon.h.

Enumeration Type Documentation

CmpMode

enum mlir::intrange::CmpMode : uint32_t

strong

Enumerator
Both
Signed
Unsigned

Definition at line 37 of file InferIntRangeCommon.h.

CmpPredicate

enum mlir::intrange::CmpPredicate : uint64_t

strong

Copy of the enum from arith and index to allow the common integer range infrastructure to not depend on either dialect.

Enumerator
eq
ne
slt
sle
sgt
sge
ult
ule
ugt
uge

Definition at line 126 of file InferIntRangeCommon.h.

OverflowFlags

enum mlir::intrange::OverflowFlags : uint32_t

strong

Enumerator
None
Nsw
Nuw

Definition at line 39 of file InferIntRangeCommon.h.

Function Documentation

evaluatePred()

std::optional< bool > mlir::intrange::evaluatePred	(	CmpPredicate	pred,
		const ConstantIntRanges &	lhs,
		const ConstantIntRanges &	rhs
	)

Returns a boolean value if pred is statically true or false for anypossible inputs falling within lhs and rhs, and std::nullopt if the value of the predicate cannot be determined.

Definition at line 711 of file InferIntRangeCommon.cpp.

References invertPredicate(), and isStaticallyTrue().

Referenced by foldCmpOfMaxOrMin().

extRange()

ConstantIntRanges mlir::intrange::extRange	(	const ConstantIntRanges &	range,
		unsigned	destWidth
	)

Independently zero-extend the unsigned values and sign-extend the signed values in range to destWidth bits, returning the resulting range.

Referenced by inferIndexCast(), and inferIndexOp().

extSIRange()

ConstantIntRanges mlir::intrange::extSIRange	(	const ConstantIntRanges &	range,
		unsigned	destWidth
	)

Use the signed values in range to sign-extend it to destWidth.

Definition at line 135 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromSigned(), mlir::ConstantIntRanges::smax(), and mlir::ConstantIntRanges::smin().

Referenced by makeLikeDest().

extUIRange()

ConstantIntRanges mlir::intrange::extUIRange	(	const ConstantIntRanges &	range,
		unsigned	destWidth
	)

Use the unsigned values in range to zero-extend it to destWidth.

Definition at line 128 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromUnsigned(), mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

Referenced by makeLikeDest().

inferAdd()

ConstantIntRanges mlir::intrange::inferAdd	(	ArrayRef< ConstantIntRanges >	argRanges,
		OverflowFlags	ovfFlags = OverflowFlags::None
	)

Definition at line 183 of file InferIntRangeCommon.cpp.

References computeBoundsBy(), mlir::ConstantIntRanges::intersection(), mlir::ConstantIntRanges::smax(), mlir::ConstantIntRanges::smin(), mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

inferAnd()

ConstantIntRanges mlir::intrange::inferAnd

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 538 of file InferIntRangeCommon.cpp.

References minMaxBy(), and widenBitwiseBounds().

inferCeilDivS()

ConstantIntRanges mlir::intrange::inferCeilDivS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 367 of file InferIntRangeCommon.cpp.

References inferDivSRange().

inferCeilDivU()

ConstantIntRanges mlir::intrange::inferCeilDivU

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 319 of file InferIntRangeCommon.cpp.

References inferDivURange().

inferDivS()

ConstantIntRanges mlir::intrange::inferDivS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 360 of file InferIntRangeCommon.cpp.

References inferDivSRange().

inferDivU()

ConstantIntRanges mlir::intrange::inferDivU

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 312 of file InferIntRangeCommon.cpp.

References inferDivURange().

inferFloorDivS()

ConstantIntRanges mlir::intrange::inferFloorDivS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 393 of file InferIntRangeCommon.cpp.

References inferDivSRange().

inferIndexOp()

ConstantIntRanges mlir::intrange::inferIndexOp	(	const InferRangeFn &	inferFn,
		ArrayRef< ConstantIntRanges >	argRanges,
		intrange::CmpMode	mode
	)

Compute inferFn on ranges, whose size should be the index storage bitwidth.

Then, compute the function on argRanges again after truncating the ranges to 32 bits. Finally, if the truncation of the 64-bit result is equal to the 32-bit result, use it (to preserve compatibility with folders and inference precision), and take the union of the results otherwise.

The mode argument specifies if the unsigned, signed, or both results of the inference computation should be used when comparing the results.

Definition at line 81 of file InferIntRangeCommon.cpp.

References Both, extRange(), indexMaxWidth, indexMinWidth, mlir::ConstantIntRanges::rangeUnion(), Signed, mlir::ConstantIntRanges::smax(), mlir::ConstantIntRanges::smin(), truncRange(), mlir::ConstantIntRanges::umax(), mlir::ConstantIntRanges::umin(), and Unsigned.

inferMaxS()

ConstantIntRanges mlir::intrange::inferMaxS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 484 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromSigned(), mlir::ConstantIntRanges::smax(), and mlir::ConstantIntRanges::smin().

inferMaxU()

ConstantIntRanges mlir::intrange::inferMaxU

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 493 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromUnsigned(), mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

inferMinS()

ConstantIntRanges mlir::intrange::inferMinS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 502 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromSigned(), mlir::ConstantIntRanges::smax(), and mlir::ConstantIntRanges::smin().

inferMinU()

ConstantIntRanges mlir::intrange::inferMinU

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 511 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromUnsigned(), mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

inferMul()

ConstantIntRanges mlir::intrange::inferMul	(	ArrayRef< ConstantIntRanges >	argRanges,
		OverflowFlags	ovfFlags = OverflowFlags::None
	)

Definition at line 248 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::intersection(), minMaxBy(), mlir::ConstantIntRanges::smax(), mlir::ConstantIntRanges::smin(), mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

inferOr()

ConstantIntRanges mlir::intrange::inferOr

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 549 of file InferIntRangeCommon.cpp.

References minMaxBy(), and widenBitwiseBounds().

inferRemS()

ConstantIntRanges mlir::intrange::inferRemS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 414 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromSigned(), getZero(), mlir::ConstantIntRanges::smax(), mlir::ConstantIntRanges::smin(), and ult.

inferRemU()

ConstantIntRanges mlir::intrange::inferRemU

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 453 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromUnsigned(), getZero(), ult, mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

inferShl()

ConstantIntRanges mlir::intrange::inferShl	(	ArrayRef< ConstantIntRanges >	argRanges,
		OverflowFlags	ovfFlags = OverflowFlags::None
	)

Definition at line 585 of file InferIntRangeCommon.cpp.

inferShrS()

ConstantIntRanges mlir::intrange::inferShrS

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 619 of file InferIntRangeCommon.cpp.

inferShrU()

ConstantIntRanges mlir::intrange::inferShrU

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 631 of file InferIntRangeCommon.cpp.

inferSub()

ConstantIntRanges mlir::intrange::inferSub	(	ArrayRef< ConstantIntRanges >	argRanges,
		OverflowFlags	ovfFlags = OverflowFlags::None
	)

Definition at line 216 of file InferIntRangeCommon.cpp.

References computeBoundsBy(), mlir::ConstantIntRanges::intersection(), mlir::ConstantIntRanges::smax(), mlir::ConstantIntRanges::smin(), mlir::ConstantIntRanges::umax(), and mlir::ConstantIntRanges::umin().

inferXor()

ConstantIntRanges mlir::intrange::inferXor

(

ArrayRef< ConstantIntRanges >

argRanges

)

Definition at line 569 of file InferIntRangeCommon.cpp.

References mlir::ConstantIntRanges::fromUnsigned(), getVaryingBitsMask(), max(), min(), and mlir::ConstantIntRanges::umin().

truncRange()

ConstantIntRanges mlir::intrange::truncRange	(	const ConstantIntRanges &	range,
		unsigned	destWidth
	)

Truncate range to destWidth bits, taking care to handle cases such as the truncation of [255, 256] to i8 not being a uniform range.

Referenced by inferIndexOp(), and makeLikeDest().

Variable Documentation

indexMaxWidth

constexpr unsigned mlir::intrange::indexMaxWidth = 64

staticconstexpr

Definition at line 35 of file InferIntRangeCommon.h.

Referenced by inferIndexOp().

indexMinWidth

constexpr unsigned mlir::intrange::indexMinWidth = 32

staticconstexpr

Definition at line 34 of file InferIntRangeCommon.h.

Referenced by inferIndexCast(), and inferIndexOp().