484   Block *leaderBlock = leaderData.block, *mergeBlock = blockData.block;  in addToCluster()  local
485   if (leaderBlock->getArgumentTypes() != mergeBlock->getArgumentTypes())  in addToCluster()
490   auto lhsIt = leaderBlock->begin(), lhsE = leaderBlock->end();  in addToCluster()
513       bool lhsIsInBlock = lhsOperand.getParentBlock() == leaderBlock;  in addToCluster()
533         if (!isValidSuccessorArg(leaderBlock, lhsOperand) ||  in addToCluster()
554         lhsIt->isUsedOutsideOfBlock(leaderBlock)) {  in addToCluster()
583   Block *leaderBlock = leaderData.block;  in merge()  local
590     if (!ableToUpdatePredOperands(leaderBlock) ||  in merge()
598     blockIterators.push_back(leaderBlock->begin());  in merge()
621           operand.set(leaderBlock->addArgument(operandVal.getType(),  in merge()
636     updatePredecessors(leaderBlock, /*clusterIndex=*/0);  in merge()
643     block->replaceAllUsesWith(leaderBlock);  in merge()