class SampleProfileInference

Declaration

template <typename BT>
class SampleProfileInference { /* full declaration omitted */ };

Description

Sample profile inference pass.

Declared at: llvm/include/llvm/Transforms/Utils/SampleProfileInference.h:83

Templates

BT

Member Variables

private const llvm::SampleProfileInference::FunctionT& F

Function.

private llvm::SampleProfileInference::BlockEdgeMap& Successors

Successors for each basic block in the CFG.

private llvm::SampleProfileInference::BlockWeightMap& SampleBlockWeights

Map basic blocks to their sampled weights.

Method Overview

• public SampleProfileInference<BT>(llvm::SampleProfileInference::FunctionT & F, llvm::SampleProfileInference::BlockEdgeMap & Successors, llvm::SampleProfileInference::BlockWeightMap & SampleBlockWeights)
• public void apply(llvm::SampleProfileInference::BlockWeightMap & BlockWeights, llvm::SampleProfileInference::EdgeWeightMap & EdgeWeights)
• private void findUnlikelyJumps(const std::vector<const BasicBlockT *> & BasicBlocks, llvm::SampleProfileInference::BlockEdgeMap & Successors, llvm::FlowFunction & Func)
• private bool isExit(const llvm::SampleProfileInference::BasicBlockT * BB)

Methods

¶SampleProfileInference<BT>(
    llvm::SampleProfileInference::FunctionT& F,
    llvm::SampleProfileInference::BlockEdgeMap&
        Successors,
    llvm::SampleProfileInference::BlockWeightMap&
        SampleBlockWeights)

Declared at: llvm/include/llvm/Transforms/Utils/SampleProfileInference.h:93

Parameters

llvm::SampleProfileInference::FunctionT& F

llvm::SampleProfileInference::BlockEdgeMap& Successors

llvm::SampleProfileInference::BlockWeightMap& SampleBlockWeights

¶void apply(
    llvm::SampleProfileInference::BlockWeightMap&
        BlockWeights,
    llvm::SampleProfileInference::EdgeWeightMap&
        EdgeWeights)

Description

Apply the profile inference algorithm for a given function

Declared at: llvm/include/llvm/Transforms/Utils/SampleProfileInference.h:98

Parameters

llvm::SampleProfileInference::BlockWeightMap& BlockWeights

llvm::SampleProfileInference::EdgeWeightMap& EdgeWeights

¶void findUnlikelyJumps(
    const std::vector<const BasicBlockT*>&
        BasicBlocks,
    llvm::SampleProfileInference::BlockEdgeMap&
        Successors,
    llvm::FlowFunction& Func)

Description

Try to infer branch probabilities mimicking implementation of BranchProbabilityInfo. Unlikely taken branches are marked so that the inference algorithm can avoid sending flow along corresponding edges.

Declared at: llvm/include/llvm/Transforms/Utils/SampleProfileInference.h:104

Parameters

const std::vector<const BasicBlockT*>& BasicBlocks

llvm::SampleProfileInference::BlockEdgeMap& Successors

llvm::FlowFunction& Func

¶bool isExit(const llvm::SampleProfileInference::
                BasicBlockT* BB)

Description

Determine whether the block is an exit in the CFG.

Declared at: llvm/include/llvm/Transforms/Utils/SampleProfileInference.h:108

Parameters

const llvm::SampleProfileInference::BasicBlockT* BB