llvm::PointerMayBeCapturedBefore

Synopses

Declared in <llvm/Analysis/CaptureTracking.h>

Return true if this pointer may be captured before a given instruction.

bool
PointerMayBeCapturedBefore(
    Value const* V,
    bool ReturnCaptures,
    Instruction const* I,
    DominatorTree const* DT,
    bool IncludeI = false,
    unsigned int MaxUsesToExplore = 0,
    LoopInfo const* LI = nullptr);

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Return which components of the pointer may be captured on the path to I.

CaptureComponents
PointerMayBeCapturedBefore(
    Value const* V,
    bool ReturnCaptures,
    Instruction const* I,
    DominatorTree const* DT,
    bool IncludeI,
    CaptureComponents Mask,
    function_ref<bool(CaptureComponents)> StopFn = capturesAnything,
    LoopInfo const* LI = nullptr,
    unsigned int MaxUsesToExplore = 0);

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Return Value

True if the pointer may be captured before I.
Capture components that may be captured on the path to I.

Parameters

Name	Description
V	Pointer value whose captures are queried.
ReturnCaptures	Whether returning the value (or part of it) counts as capturing it.
I	Instruction before which captures are considered.
DT	Optional dominator tree used to restrict captures to those before `I.`
IncludeI	Whether captures by `I` itself are considered.
MaxUsesToExplore	How many uses to explore before giving up; zero means use the default.
LI	Optional loop info used to prune reachability checks.
Mask	Capture components to consider.
StopFn	Predicate that aborts traversal when it returns true on the accumulated components.