llvm::SplitBlock

Synopses

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

Split a block so instructions from SplitPt move to a new successor.

BasicBlock*
SplitBlock(
    BasicBlock* Old,
    BasicBlock::iterator SplitPt,
    DomTreeUpdater* DTU = nullptr,
    LoopInfo* LI = nullptr,
    MemorySSAUpdater* MSSAU = nullptr,
    Twine const& BBName = "");

» more...

Split a block so instructions from SplitPt move to a new successor.

BasicBlock*
SplitBlock(
    BasicBlock* Old,
    BasicBlock::iterator SplitPt,
    DominatorTree* DT,
    LoopInfo* LI = nullptr,
    MemorySSAUpdater* MSSAU = nullptr,
    Twine const& BBName = "");

» more...

Split a block at an instruction using a dominator-tree updater.

BasicBlock*
SplitBlock(
    BasicBlock* Old,
    Instruction* SplitPt,
    DomTreeUpdater* DTU = nullptr,
    LoopInfo* LI = nullptr,
    MemorySSAUpdater* MSSAU = nullptr,
    Twine const& BBName = "");

» more...

Split a block at an instruction using a dominator tree.

BasicBlock*
SplitBlock(
    BasicBlock* Old,
    Instruction* SplitPt,
    DominatorTree* DT,
    LoopInfo* LI = nullptr,
    MemorySSAUpdater* MSSAU = nullptr,
    Twine const& BBName = "");

» more...

Return Value

The newly created successor block containing instructions from SplitPt onward.

Parameters

Name	Description
Old	Block to split.
SplitPt	First instruction moved into the new block.
DTU	Optional dominator-tree updater for CFG changes.
LI	Optional loop info to update.
MSSAU	Optional MemorySSA updater for the split.
BBName	Optional name for the newly created block.
DT	Dominator tree to update.