search for: goosey

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2017 Jan 03
4
RFC: Allow readnone and readonly functions to throw exceptions
...label %normal unwind label %unwind normal: ret i32 0 unwind: %t = landingpad i32 cleanup ret i32 %t } since it gets rid of a `resume` and thus a side effect (by assumption). # We're probably already there (but we need an audit) All said and done, the situation is not as "loosey goosey" as I made it sound like. mayHaveSideEffects() is defined as "mayWriteToMemory() || mayThrow()"; and this shows in e.g. EarlyCSE which will refuse to DCE the call to @f in @g declare void @f() readnone define void @g() { call void @f() ret void } unless @f is also marked noun...