305       : SrcChain(SrcBlock->CurChain), DstChain(DstBlock->CurChain),  in Edge()
311     if (From == SrcChain)  in changeEndpoint()
312       SrcChain = To;  in changeEndpoint()
327     return Src == SrcChain ? CacheValidForward : CacheValidBackward;  in hasCachedMergeGain()
331     return Src == SrcChain ? CachedGainForward : CachedGainBackward;  in getCachedMergeGain()
335     if (Src == SrcChain) {  in setCachedMergeGain()
350   Chain *SrcChain{nullptr};  member in llvm::bolt::Edge
656         Chain *SrcChain = AllBlocks[SrcIndex].CurChain;  in mergeColdChains()  local
658         bool IsColdSrc = SrcChain->executionCount() == 0;  in mergeColdChains()
660         if (SrcChain != DstChain && !DstChain->isEntryPoint() &&  in mergeColdChains()
661             SrcChain->blocks().back()->Index == SrcIndex &&  in mergeColdChains()
664           mergeChains(SrcChain, DstChain, 0, MergeTypeTy::X_Y);  in mergeColdChains()