modimo added a comment.

@tejohnson Indirect calls are not captured in FunctionSummaries in CallGraph or 
in a flag form saying they exist. Also looks like 
<https://github.com/llvm/llvm-project/blob/92ce6db/llvm/lib/Analysis/ModuleSummaryAnalysis.cpp#L372>
 speculative candidates for ICP do make it on the graph. For this analysis we 
need to bail out on indirect calls so I think the simplest way is to add a flag 
indicating the presence of them (In FunFlags?). As for the speculative 
candidates, it's probably not too big of a deal.

In D36850#2940598 <https://reviews.llvm.org/D36850#2940598>, @tejohnson wrote:

> Thanks - I know you are still working on this, but I had a few comments so 
> far. I haven't had a chance to test it yet. Unfortunately, the nounwind 
> propagation shouldn't do much on our side as we disable exceptions internally.

I've been iterating on this with Clang self-build with exceptions enabled. Once 
this gets into a good state logically I'll start testing on some of our 
internal workloads which generally enable exceptions and report back on the 
findings.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D36850/new/

https://reviews.llvm.org/D36850

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