class GlobalVarSummary

Declaration

class GlobalVarSummary : public GlobalValueSummary { /* full declaration omitted */ };

Description

Global variable summary information to aid decisions and implementation of importing. Global variable summary has two extra flag, telling if it is readonly or writeonly. Both readonly and writeonly variables can be optimized in the backed: readonly variables can be const-folded, while writeonly vars can be completely eliminated together with corresponding stores. We let both things happen by means of internalizing such variables after ThinLTO import.

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:893

Inherits from: GlobalValueSummary

Member Variables

private std::unique_ptr<VTableFuncList> VTableFuncs

For vtable definitions this holds the list of functions and their corresponding offsets within the initializer array.

public struct GVarFlags VarFlags

Method Overview

• public GlobalVarSummary(llvm::GlobalValueSummary::GVFlags Flags, llvm::GlobalVarSummary::GVarFlags VarFlags, std::vector<ValueInfo> Refs)
• public static bool classof(const llvm::GlobalValueSummary * GVS)
• public GlobalObject::VCallVisibility getVCallVisibility() const
• public bool isConstant() const
• public bool maybeReadOnly() const
• public bool maybeWriteOnly() const
• public void setReadOnly(bool RO)
• public void setVCallVisibility(GlobalObject::VCallVisibility Vis)
• public void setVTableFuncs(llvm::VTableFuncList Funcs)
• public void setWriteOnly(bool WO)
• public ArrayRef<llvm::VirtFuncOffset> vTableFuncs() const
• public llvm::GlobalVarSummary::GVarFlags varflags() const

Inherited from GlobalValueSummary:

• public canAutoHide
• public flags
• public getBaseObject
• public getBaseObject
• public getOriginalName
• public getSummaryKind
• public getVisibility
• public isDSOLocal
• public isLive
• public linkage
• public modulePath
• public notEligibleToImport
• public refs
• public setCanAutoHide
• public setDSOLocal
• public setLinkage
• public setLive
• public setModulePath
• public setNotEligibleToImport
• public setOriginalName
• public setVisibility

Methods

¶GlobalVarSummary(
    llvm::GlobalValueSummary::GVFlags Flags,
    llvm::GlobalVarSummary::GVarFlags VarFlags,
    std::vector<ValueInfo> Refs)

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:930

Parameters

llvm::GlobalValueSummary::GVFlags Flags

llvm::GlobalVarSummary::GVarFlags VarFlags

std::vector<ValueInfo> Refs

¶static bool classof(
    const llvm::GlobalValueSummary* GVS)

Description

Check if this is a global variable summary.

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:936

Parameters

const llvm::GlobalValueSummary* GVS

¶GlobalObject::VCallVisibility getVCallVisibility()
    const

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:949

¶bool isConstant() const

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:945

¶bool maybeReadOnly() const

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:943

¶bool maybeWriteOnly() const

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:944

¶void setReadOnly(bool RO)

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:941

Parameters

bool RO

¶void setVCallVisibility(
    GlobalObject::VCallVisibility Vis)

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:946

Parameters

GlobalObject::VCallVisibility Vis

¶void setVTableFuncs(llvm::VTableFuncList Funcs)

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:953

Parameters

llvm::VTableFuncList Funcs

¶void setWriteOnly(bool WO)

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:942

Parameters

bool WO

¶ArrayRef<llvm::VirtFuncOffset> vTableFuncs() const

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:958

¶llvm::GlobalVarSummary::GVarFlags varflags() const

Declared at: llvm/include/llvm/IR/ModuleSummaryIndex.h:940