llvm::OverflowTracking Struct Reference

#include "llvm/Transforms/Utils/Local.h"

Public Member Functions
	OverflowTracking ()=default
LLVM_ABI void	mergeFlags (Instruction &I)
	Merge in the no-wrap flags from I.
LLVM_ABI void	applyFlags (Instruction &I)
	Apply the no-wrap flags to I if applicable.

Public Attributes
bool	HasNUW = true
bool	HasNSW = true
bool	IsDisjoint = true
std::optional< unsigned >	Opcode
	Opcode of merged instructions.
bool	AllKnownNonNegative = true
bool	AllKnownNonZero = true

Detailed Description

Definition at line 572 of file Local.h.

Constructor & Destructor Documentation

OverflowTracking()

llvm::OverflowTracking::OverflowTracking ( )

default

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

References I, and LLVM_ABI.

Member Function Documentation

applyFlags()

void OverflowTracking::applyFlags

(

Instruction &

I

)

Apply the no-wrap flags to I if applicable.

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 4006 of file Local.cpp.

References AllKnownNonNegative, AllKnownNonZero, llvm::dyn_cast(), HasNSW, HasNUW, I, and IsDisjoint.

mergeFlags()

void OverflowTracking::mergeFlags

(

Instruction &

I

)

Merge in the no-wrap flags from I.

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 3990 of file Local.cpp.

References assert(), llvm::dyn_cast(), HasNSW, HasNUW, I, llvm::isa(), IsDisjoint, and Opcode.

Member Data Documentation

AllKnownNonNegative

bool llvm::OverflowTracking::AllKnownNonNegative = true

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 587 of file Local.h.

Referenced by applyFlags(), llvm::InstCombinerImpl::foldBinopWithRecurrence(), and hoistBOAssociation().

AllKnownNonZero

bool llvm::OverflowTracking::AllKnownNonZero = true

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 588 of file Local.h.

Referenced by applyFlags().

HasNSW

bool llvm::OverflowTracking::HasNSW = true

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 574 of file Local.h.

Referenced by applyFlags(), and mergeFlags().

HasNUW

bool llvm::OverflowTracking::HasNUW = true

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 573 of file Local.h.

Referenced by applyFlags(), and mergeFlags().

IsDisjoint

bool llvm::OverflowTracking::IsDisjoint = true

Examples

/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/llvm/include/llvm/Transforms/Utils/Local.h.

Definition at line 575 of file Local.h.

Referenced by applyFlags(), and mergeFlags().

Opcode

std::optional<unsigned> llvm::OverflowTracking::Opcode

Opcode of merged instructions.

All instructions passed to mergeFlags must have the same opcode.

Definition at line 580 of file Local.h.

Referenced by mergeFlags().

---

The documentation for this struct was generated from the following files:

• include/llvm/Transforms/Utils/Local.h
• lib/Transforms/Utils/Local.cpp