[llvm-dev] 404s within LLVM documentation

Neil Nelson via llvm-dev llvm-dev at lists.llvm.org
Wed Aug 28 19:46:55 PDT 2019

Patrick, You have identified a good way to do this. Given it is likely 
that the links are to files in a directory structure on a single server 
with that file structure/path given by the link text, as we see in your 
dead link list, and that in a good number, perhaps likely a large 
majority of the cases, that the file names (less the directory path) are 

It would be a fairly direct procedure to associate links by their file 
name (less path) with file locations. The process would then update the 
links for the correct paths, list links without an existing file, and 
list dead links having more than one existing file with the same name.

The frequency of that run would depend on the frequency of dead-link 
discovery that the run could provide.

Regards, Neil Nelson

On 8/28/19 7:52 PM, Patrick Nappa via llvm-dev wrote:
> Hi all,
> I'm currently in the process of updating the Kaleidoscope tutorials 
> (first and foremost, the ORC/BuildingAJIT ones), and I've noticed a 
> fair few 404s which are lingering within the current visible 
> documentation. Some of these don't seem to have linked to existing 
> pages for a while.
> I was wondering if there was a way to set up a check in the buildbot 
> to ensure that documentation doesn't break between builds? I'm happy 
> to fix the current dead links I've found (see below) but thought it 
> might be wise to set up a more automated approach in the future. Does 
> anyone have any tips on how I'd go about doing this/if this should be 
> set up at all?
> I ran a web crawler to find each of the dead links (this may not be 
> exhaustive), and they are as follows:
> https://llvm.org/docs/TestSuiteMakefileGuide
> https://llvm.org/docs/doxygen/structLICM.html
> https://llvm.org/docs/tutorial/LangImpl5.html#for-loop-expression
> https://llvm.org/docs/tutorial/LangImpl7.html#user-defined-local-variables
> http://llvm.org/docs/lnt/modindex.html
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl6.html#user-defined-unary-operators
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl5.html#for-loop-expression
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl7.html#user-defined-local-variables
> https://llvm.org/docs/tutorial/LangRef.html#instruction-reference
> https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl4.html#adding-a-jit-compiler
> https://llvm.org/docs/tutorial/WritingAnLLVMPass.html
> https://llvm.org/docs/tutorial/Passes.html
> https://llvm.org/docs/tutorial/ProgrammersManual.html#viewing-graphs-while-debugging-code
> https://llvm.org/docs/tutorial/SourceLevelDebugging.html
> https://llvm.org/docs/tutorial/Frontend/PerformanceTips.html
> https://llvm.org/docs/tutorial/GetElementPtr.html
> https://llvm.org/docs/tutorial/GarbageCollection.html
> https://llvm.org/docs/tutorial/ExceptionHandling.html
> https://www.llvm.org/docs/doxygen/structLICM.html
> http://llvm.org/docs/TestSuiteMakefileGuide
> http://llvm.org/docs/doxygen/structLICM.html
> https://www.llvm.org/docs/TestSuiteMakefileGuide
> http://llvm.org/docs/tutorial/LangImpl5.html#for-loop-expression
> http://llvm.org/docs/tutorial/LangImpl7.html#user-defined-local-variables
> Some of these are trivial mistakes (i.e. 
> https://llvm.org/docs/tutorial/LangRef.html#instruction-reference -> 
> https://llvm.org/docs/LangRef.html#instruction-reference), and some 
> require a bit more inspection.
> Regards,
> Patrick
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