May 2015
Intermediate to advanced
296 pages
5h 10m
English
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Using LLVM utility passes
In this recipe, you will learn about LLVM's utility passes. As the name signifies, they are of much utility to users who want to understand certain things about LLVM that are not easy to understand by going through code. We will look into two utility passes that represent the CFG of a program.
Getting ready
You need to build and install LLVM, and install the graphviz tool. You can download graphviz from http://www.graphviz.org/Download.php, or install it from your machine's package manager, if it is in the list of available packages.
How to do it...
Perform the following steps:
- Write the test code required for running the utility passes. This test code consists of
ifblocks, it will create a new edge in the CFG:$ cat utility.ll ...
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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.
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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.