“loopinvariant.”Beyondtheirroleinverification,loopinvariantshelpprogramunderstandingbyprovidingfundamentalinsightsintothenatureofalgorithms.Inpractice,findingsoundandusefulinvariantsremainsachallenge.Fortunately,manyinvariantsseemintuitivelytoexhibitacommonflavor.Understandingthesefundamentalinvariantpatternscouldtherefore...
DEBUG(dbgs() <<'\n'<< *SrcAddr->getValue() <<"+"<< SrcAddr->getOffset() <<" and "<< *DstAddr->getValue() <<"+"<< DstAddr->getOffset() <<": ");if(!isMachineMemOperandAlias(SrcAddr, DstAddr, AA, SE))return-1;if(L.isLoopInvariant(SrcAddrVal) && L.isLoopInvariant(...
# 需要導入模塊: from rpython.jit.metainterp.resoperation import OpHelpers [as 別名]# 或者: from rpython.jit.metainterp.resoperation.OpHelpers importis_call_loopinvariant[as 別名]defclear_caches(self, opnum, descr, argboxes):if(opnum == rop.SETFIELD_GCoropnum == r...
The loop invariant should state what work has been completed towards solving the problem and what works still needs to be done. the loop invariant should flow smoothly from the beginning to the end of the algorithm at the beginning, it should follow easily from the preconditions. it should pro...
Loop invariants are examples of such properties, and there exist several methods for automating the task of finding a correct invariant for a given loop. Symbol elimination is one such technique which requires no additional information or prior knowledge about the program. In the present paper we ...
Hoisting of loop invariant (also known as loop invariant code motion) computations consists of moving computations that do not change with the iterations of the loop and thus can be moved to before the loop. Node splitting consists of copying data to remove data dependence cycles. Loop scaling ...
We discuss some trade-offs between the completeness of the technique and the tractability of the constraint-solving problem generated. The application of the technique is demonstrated on a few examples. 展开 关键词: Grö bner bases constraint programming ideals invariant generation program analysis...
In compiler jargon, we would say that its value is “loop invariant”. To see why changing the value of U as the loop executes, introduces untold complications into the life of the auto-vectorizer, consider the following, contrived example:...
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在下文中一共展示了ScalarEvolution::isLoopInvariant方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。 示例1: isHoistableLoad ▲点赞 6▼ boolpolly::isHoistableLoad(LoadInst *LInst, Region &R, LoopInfo &LI, ...