llvm::SplitCriticalEdge

Synopses

Declared in <llvm/Transforms/Utils/BasicBlockUtils.h>

Split the critical edge between two basic blocks if one exists.

BasicBlock*
SplitCriticalEdge(
    BasicBlock* Src,
    BasicBlock* Dst,
    CriticalEdgeSplittingOptions const& Options = CriticalEdgeSplittingOptions());

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Split a critical edge from a terminator to one of its successors.

BasicBlock*
SplitCriticalEdge(
    Instruction* TI,
    unsigned int SuccNum,
    CriticalEdgeSplittingOptions const& Options = CriticalEdgeSplittingOptions(),
    Twine const& BBName = "");

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Return Value

The new block if the edge was split, or null otherwise.

Parameters

Name	Description
Src	Source block of the edge.
Dst	Destination block of the edge.
Options	Analyses and policy controlling the split.
TI	Terminator whose outgoing edge may be split.
SuccNum	Index of the successor edge to split.
BBName	Optional name for the newly created block.