llvm::getCPUDefaultTargetFeatures

Returns the default enabled features for CPU, or nullopt if unknown.

Synopsis

Declared in <llvm/TargetParser/TargetParser.h>

std::optional<llvm::StringMap<bool>>
getCPUDefaultTargetFeatures(
    StringRef CPU,
    ArrayRef<BasicSubtargetSubTypeKV> ProcDesc,
    ArrayRef<BasicSubtargetFeatureKV> ProcFeatures);

Description

Looks up CPU in ProcDesc and expands transitively implied features from ProcFeatures into a name‐to‐enabled map.

Return Value

Map from feature name to true for each feature implied by CPU, or std::nullopt if CPU is empty or not found in ProcDesc.

Parameters

Name

Description

CPU

CPU name to look up.

ProcDesc

Sorted table of CPU/subtype entries and implied features.

ProcFeatures

Feature table used to expand implied feature bits.

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