[llvm-dev] Doubt regarding getAnalysisUsage

[Dangeti Tharun kumar via llvm-dev]

Hi,

I have a doubt regarding *getAnalysisUsage.* My assumption is that, as
analysis passes will not change the IR, all the passes required by an
analysis pass should be preserved. Say, I have an analysis pass which
requires another analysis pass called *SomeAnalysis* and I have not
added *AU.addPreserved<SomeAnalysis>()
*to my pass.

Would the pass manager still considers the *SomeAnlaysis *as preserved?
-- 
Regards,
DTharun
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