class InternalizePass

Declaration

class InternalizePass : public PassInfoMixin { /* full declaration omitted */ };

Description

A pass that internalizes all functions and variables other than those that must be preserved according to \c MustPreserveGV.

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:35

Inherits from: PassInfoMixin

Member Variables

private bool IsWasm = false

private const std::function<bool(const GlobalValue&)> MustPreserveGV

Client supplied callback to control wheter a symbol must be preserved.

private StringSet<> AlwaysPreserved

Set of symbols private to the compiler that this pass should not touch.

Method Overview

• public InternalizePass()
• public InternalizePass(std::function<bool (const GlobalValue &)> MustPreserveGV)
• private void checkComdat(llvm::GlobalValue & GV, DenseMap<const llvm::Comdat *, llvm::InternalizePass::ComdatInfo> & ComdatMap)
• public bool internalizeModule(llvm::Module & TheModule, llvm::CallGraph * CG = nullptr)
• private bool maybeInternalize(llvm::GlobalValue & GV, DenseMap<const llvm::Comdat *, llvm::InternalizePass::ComdatInfo> & ComdatMap)
• public llvm::PreservedAnalyses run(llvm::Module & M, llvm::ModuleAnalysisManager & AM)
• private bool shouldPreserveGV(const llvm::GlobalValue & GV)

Methods

¶InternalizePass()

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:63

¶InternalizePass(
    std::function<bool(const GlobalValue&)>
        MustPreserveGV)

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:64

Parameters

std::function<bool(const GlobalValue&)> MustPreserveGV

¶void checkComdat(
    llvm::GlobalValue& GV,
    DenseMap<const llvm::Comdat*,
             llvm::InternalizePass::ComdatInfo>&
        ComdatMap)

Description

If GV is part of a comdat and is externally visible, keep track of its comdat so that we don't internalize any of its members.

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:59

Parameters

llvm::GlobalValue& GV

DenseMap<const llvm::Comdat*, llvm::InternalizePass::ComdatInfo>& ComdatMap

¶bool internalizeModule(
    llvm::Module& TheModule,
    llvm::CallGraph* CG = nullptr)

Description

Run the internalizer on \p TheModule, returns true if any changes was made. If the CallGraph \p CG is supplied, it will be updated when internalizing a function (by removing any edge from the "external node")

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:72

Parameters

llvm::Module& TheModule

llvm::CallGraph* CG = nullptr

¶bool maybeInternalize(
    llvm::GlobalValue& GV,
    DenseMap<const llvm::Comdat*,
             llvm::InternalizePass::ComdatInfo>&
        ComdatMap)

Description

Internalize GV if it is possible to do so, i.e. it is not externally visible and is not a member of an externally visible comdat.

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:55

Parameters

llvm::GlobalValue& GV

DenseMap<const llvm::Comdat*, llvm::InternalizePass::ComdatInfo>& ComdatMap

¶llvm::PreservedAnalyses run(
    llvm::Module& M,
    llvm::ModuleAnalysisManager& AM)

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:74

Parameters

llvm::Module& M

llvm::ModuleAnalysisManager& AM

¶bool shouldPreserveGV(const llvm::GlobalValue& GV)

Description

Return false if we're allowed to internalize this GV.

Declared at: llvm/include/llvm/Transforms/IPO/Internalize.h:52

Parameters

const llvm::GlobalValue& GV