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[cfg] Make the docs for splitBasicBlockAndBranch clearer. #25385

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Jun 12, 2019
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[cfg] Make the docs for splitBasicBlockAndBranch clearer. #25385

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5 changes: 3 additions & 2 deletions include/swift/SILOptimizer/Utils/CFG.h
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Original file line number Diff line number Diff line change
Expand Up @@ -96,8 +96,9 @@ bool rotateLoop(SILLoop *L, DominanceInfo *DT, SILLoopInfo *LI,
bool RotateSingleBlockLoops, SILBasicBlock *UpTo,
bool ShouldVerify);

/// Splits the basic block before the instruction with an unconditional
/// branch and updates the dominator tree and loop info.
/// Splits the basic block before the instruction with an unconditional branch
/// and updates the dominator tree and loop info. Returns the new, branched to
/// block that contains the end of \p SplitBeforeInst's block.
SILBasicBlock *splitBasicBlockAndBranch(SILBuilder &B,
SILInstruction *SplitBeforeInst,
DominanceInfo *DT, SILLoopInfo *LI);
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