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...order to do this we compute the depth and latency for the current instruction (MUL+ADD) and the alternate instruction (MADD). But we call two different set of APIs for the current and new instructions: For new instruction we use: unsigned NewRootDepth = getDepth(InsInstrs, InstrIdxForVirtReg, BlockTrace); unsigned NewRootLatency = getLatency(Root, NewRoot, BlockTrace); While for the current instruction we use: unsigned RootDepth = BlockTrace.getInstrCycles(Root).Depth; unsigned RootLatency = TSchedModel.computeInstrLatency(Root); This is related to the following commit: commit e4fa341d...

Currently, some new storage devices have the ability to do performance optimizations according to the type of data payload - say, file system metadata, time-stamps, sequential write in some granularity, random write and so on. For example, the latest eMMC 4.5 device can support the so-called ''Context Management'' and ''Data Tag Mechanism'' features. By receiving