December 2015
Beginner to intermediate
166 pages
3h 8m
English
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Using other Pass info in current Pass
For the Pass Manager to work optimally it needs to know the dependencies between the Passes. Each of the passes can itself declare its dependencies: the analysis passes that need to be executed before this pass is executed and the passes that will get invalidated after the current pass is run. To specify these dependencies, a pass needs to implement the getAnalysisUsage method.
virtual void getAnalysisUsage(AnalysisUsage &Info) const;
Using this method the current pass can specify the required and invalidated sets by filling in the details in the AnalysisUsage object. To fill in the information the Pass needs to call any of the following methods:
AnalysisUsage::addRequired<> method
This method arranges for the ...
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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.