[LLVMdev] addRequired vs addPreserved

Devang Patel dpatel at apple.com
Wed Feb 15 09:09:40 PST 2012

On Feb 15, 2012, at 8:34 AM, Xin Tong wrote:

> what are the differences between the addRequired  and addPreserved in
> LLVM Pass Managers.

The doc @ http://llvm.org/docs/WritingAnLLVMPass.html#AU::addRequired has the info you need.

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