computeKnownFPClass overloads

Synopses

Declared in <llvm/Analysis/ValueTracking.h>

Determine known floating‐point classes for V.

KnownFPClass
computeKnownFPClass(
    Value const* V,
    FPClassTest InterestedClasses,
    SimplifyQuery const& SQ,
    unsigned int Depth = 0);

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Wrapper to account for known fast math flags at the use instruction.

KnownFPClass
computeKnownFPClass(
    Value const* V,
    FastMathFlags FMF,
    FPClassTest InterestedClasses,
    SimplifyQuery const& SQ,
    unsigned int Depth = 0);

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Determine which floating‐point classes are valid for V, and return them in KnownFPClass bit sets.

KnownFPClass
computeKnownFPClass(
    Value const* V,
    APInt const& DemandedElts,
    FPClassTest InterestedClasses,
    SimplifyQuery const& SQ,
    unsigned int Depth = 0);

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Wrapper to account for known fast math flags at the use instruction.

KnownFPClass
computeKnownFPClass(
    Value const* V,
    APInt const& DemandedElts,
    FastMathFlags FMF,
    FPClassTest InterestedClasses,
    SimplifyQuery const& SQ,
    unsigned int Depth = 0);

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Determine known floating‐point classes for V using explicit analysis context.

KnownFPClass
computeKnownFPClass(
    Value const* V,
    DataLayout const& DL,
    FPClassTest InterestedClasses = fcAllFlags,
    TargetLibraryInfo const* TLI = nullptr,
    AssumptionCache* AC = nullptr,
    Instruction const* CxtI = nullptr,
    DominatorTree const* DT = nullptr,
    bool UseInstrInfo = true,
    unsigned int Depth = 0);

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Return Value

  • Known floating‐point classes for V.

  • Known floating‐point classes for the demanded elements of V.

Parameters

Name

Description

V

Floating‐point value to analyze.

InterestedClasses

FP classes the caller is interested in.

SQ

Simplify query providing context for the analysis.

Depth

Current recursion depth for this query.

FMF

Fast‐math flags from the use site.

DemandedElts

Demanded vector elements for the query.

DL

Data layout used for type sizes.

TLI

Optional target library info.

AC

Optional assumption cache for context‐sensitive facts.

CxtI

Optional context instruction for local analysis.

DT

Optional dominator tree for context‐sensitive analysis.

UseInstrInfo

Whether to use instruction‐level information.

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