Group flags (Linkage, NotEligibleToImport, etc.) as a bitfield. More...

#include "llvm/IR/ModuleSummaryIndex.h"

Public Member Functions
	GVFlags (GlobalValue::LinkageTypes Linkage, GlobalValue::VisibilityTypes Visibility, bool NotEligibleToImport, bool Live, bool IsLocal, bool CanAutoHide)
	Convenience Constructors.

Public Attributes
unsigned	Linkage: 4
	The linkage type of the associated global value.

unsigned	Visibility: 2
	Indicates the visibility.

unsigned	NotEligibleToImport: 1
	Indicate if the global value cannot be imported (e.g.

unsigned	Live: 1
	In per-module summary, indicate that the global value must be considered a live root for index-based liveness analysis.

unsigned	DSOLocal: 1
	Indicates that the linker resolved the symbol to a definition from within the same linkage unit.

unsigned	CanAutoHide: 1
	In the per-module summary, indicates that the global value is linkonce_odr and global unnamed addr (so eligible for auto-hiding via hidden visibility).

Detailed Description

Group flags (Linkage, NotEligibleToImport, etc.) as a bitfield.

Definition at line 426 of file ModuleSummaryIndex.h.

Constructor & Destructor Documentation

◆ GVFlags()

llvm::GlobalValueSummary::GVFlags::GVFlags	(	GlobalValue::LinkageTypes	Linkage,
		GlobalValue::VisibilityTypes	Visibility,
		bool	NotEligibleToImport,
		bool	Live,
		bool	IsLocal,
		bool	CanAutoHide
	)

inlineexplicit

Convenience Constructors.

Definition at line 466 of file ModuleSummaryIndex.h.

Member Data Documentation

◆ CanAutoHide

unsigned llvm::GlobalValueSummary::GVFlags::CanAutoHide

In the per-module summary, indicates that the global value is linkonce_odr and global unnamed addr (so eligible for auto-hiding via hidden visibility).

In the combined summary, indicates that the prevailing linkonce_odr copy can be auto-hidden via hidden visibility when it is upgraded to weak_odr in the backend. This is legal when all copies are eligible for auto-hiding (i.e. all copies were linkonce_odr global unnamed addr. If any copy is not (e.g. it was originally weak_odr, we cannot auto-hide the prevailing copy as it means the symbol was externally visible.

Definition at line 463 of file ModuleSummaryIndex.h.

◆ DSOLocal

unsigned llvm::GlobalValueSummary::GVFlags::DSOLocal

Indicates that the linker resolved the symbol to a definition from within the same linkage unit.

Definition at line 452 of file ModuleSummaryIndex.h.

◆ Linkage

unsigned llvm::GlobalValueSummary::GVFlags::Linkage

The linkage type of the associated global value.

One use is to flag values that have local linkage types and need to have module identifier appended before placing into the combined index, to disambiguate from other values with the same name. In the future this will be used to update and optimize linkage types based on global summary-based analysis.

Definition at line 434 of file ModuleSummaryIndex.h.

◆ Live

unsigned llvm::GlobalValueSummary::GVFlags::Live

In per-module summary, indicate that the global value must be considered a live root for index-based liveness analysis.

Used for special LLVM values such as llvm.global_ctors that the linker does not know about.

In combined summary, indicate that the global value is live.

Definition at line 448 of file ModuleSummaryIndex.h.

◆ NotEligibleToImport

unsigned llvm::GlobalValueSummary::GVFlags::NotEligibleToImport

Indicate if the global value cannot be imported (e.g.

it cannot be renamed or references something that can't be renamed).

Definition at line 441 of file ModuleSummaryIndex.h.

◆ Visibility

unsigned llvm::GlobalValueSummary::GVFlags::Visibility

Indicates the visibility.

Definition at line 437 of file ModuleSummaryIndex.h.

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

include/llvm/IR/ModuleSummaryIndex.h

Public Member Functions

Public Attributes