48   DenseMap<Block *, unsigned> blocksToIdx;  member
110   auto it = impl->blocksToIdx.find(block);  in getBlockDef()
111   return it == impl->blocksToIdx.end() ? nullptr : &*impl->blocks[it->second];  in getBlockDef()
249   auto it = impl->blocksToIdx.find(block);  in addDefinition()
250   if (it == impl->blocksToIdx.end()) {  in addDefinition()
251     impl->blocksToIdx.try_emplace(block, impl->blocks.size());  in addDefinition()
263   auto it = impl->blocksToIdx.find(blockArg.getOwner());  in addDefinition()
264   assert(it != impl->blocksToIdx.end() &&  in addDefinition()
305   auto existingIt = impl->blocksToIdx.find(arg.getOwner());  in addUses()
306   assert(existingIt != impl->blocksToIdx.end() &&  in addUses()
315   auto it = impl->blocksToIdx.find(block);  in addUses()
316   if (it == impl->blocksToIdx.end()) {  in addUses()
317     it = impl->blocksToIdx.try_emplace(block, impl->blocks.size()).first;  in addUses()