nsaanswer.blogg.se

Interprocedural register allocation Aggregation of global references Interprocedural I-cache optimization

In-line expansion Leaf-routine optimization Shrink wrapping Machine idioms Tail merging Branch optimizations and conditional moves Dead-code elimination Software pipelining, with loop unrolling, variable expansion, register renaming, and hierarchical reduction Basic-block and branch scheduling 1 Register allocation by graph coloring Basic-block and branch scheduling 2 Intraprocedural I-cache optimization Instruction prefetching Data prefetching Branch prediction (to constant folding, algebraic simplifications, and reassociation) Usually, these optimizations are done very early in the compilation process, since compilation tends to lower the level of the code as it proceeds from one phase to the next. These optim izations typically are applied either to source code or to a high-level intermediate code that preserves loop structure and the sequence in which operations are performed and that has array accesses in essentially their source-code form. The correspondence between letters and code levels is as follows: The letters at the left in the diagram correspond to the levels o f code appropriate for the corresponding optim izations.

Other orders are possible, and the exam ples o f real-world compilers in Chapter 21 present several alternatives, though none o f them includes all o f the optim iza­ tions in this diagram.

The seller will arrange the return pick up for these items.įor seller-fulfilled items from Sports collectibles and Entertainment collectibles categories, the sellers need to be informed of the damage / defect within 10 days of delivery.Order o f Optimizations This flowchart represents a recommended order for performing optim izations in an aggres­ sive optimizing compiler. These items are not eligible for self-return. Note: For seller fulfilled items from Books, Movies & TV Shows categories, the sellers need to be informed of the damage/ defect within 14 days of delivery.įor seller-fulfilled items from Fine Art category, the sellers need to be informed of the damage / defect within 10 days of delivery. Learn more about returning seller fulfilled items.

If you do not receive a response from the seller for your return request within two business days, you can submit an A-to-Z Guarantee claim. If you’ve received a seller-fulfilled product in a condition that is damaged, defective or different from its description on the product detail page on Amazon.in, returns are subject to the seller's approval of the return. The return timelines for seller-fulfilled items sold on Amazon.in are equivalent to the return timelines mentioned above for items fulfilled by Amazon.