December 2015
Beginner to intermediate
166 pages
3h 8m
English
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Summary
In this chapter, we saw how LLVM IR is converted to SelectionDAG. The SDAG then goes through variety of transformation. The instructions are legalized, so are the data types. SelectionDAG also goes through the optimization phase where DAG nodes are combined to result in optimal nodes, which may be target-spacific. After DAG combine, it goes through instruction selection phase, where target architecture instructions are mapped to DAG nodes. After this, the DAGs are ordered in a linear order to facilitate execution by CPU, these DAGs are converted to MachineInstr and DAGs are destroyed. Assigning of physical register takes place in the next step to all the virtual registers present in the code. After this, the MC layer comes into picture ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.