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Thanks Eli. I will try your solution, but then, what is the difference between [IntrReadArgMem] and [IntrReadMem] when specifying an intrinsic ? It seems that both options specify that a function is 'readonly' (maybe the difference is not well supported for then moment ?) Julien > Dead store elimination is that pass that could do the optimizations in > question. The second

On Thu, Dec 4, 2008 at 7:38 AM, Julien Schmitt <jschmitt at dibcom.fr> wrote: > Dear LLVMer ; > > i'm trying to use LLVM for a specific target, using different memory banks. > I have written the frontend to generate a valid IR and want to use the > existing passes (as defined in tool opt) to optimize the code. > > The target h...

Dear LLVMer ; i'm trying to use LLVM for a specific target, using different memory banks. I have written the frontend to generate a valid IR and want to use the existing passes (as defined in tool opt) to optimize the code. The target has specific instructions, so following advices given in documentation, I created an intrinsic function, with attribute [IntrReadArgMem]. My test case is

Hi ! I'm writting an AliasAnalysis using the online tutorial (http://www.llvm.org/docs/AliasAnalysis.html). My problem is to chain this pass (function Pass in my case) with the basicAA ... I know that my pass is running (runOnFunction) but the virtual methods derived from AliasAnalysis (alias, getModRefInfo, etc ... ) are never called (even in the case wherer the basicAA reaches the end

Hi ! In my quest of implementing my own AA, i understood that it doesn't work because i don't use the 'opt' tool but i create my own PassManager (this for other reasons). The problem is the same with other existing AA (AndersensPass or globalModRefPass) : these AApasses are not chained with the basicAA when they are created in PassManager ... So my question is now : how to

Well, now i added the creation of my AA just before the creation of DSE, (in the former case it was done at top of all passes list) and it's working (alias and getModRefInfo are called)... Maybe a particular pass destroyed the AliasAnalysGroup ?? However he solution is not very clean, since i don't know which pass need an AA (i guess this should be automatic whith the method

Thank you very much John for your answer , you understood well my problem (and the signification of my "own" PassManager). I already tried your solution but it is not enough. The problem is the same with existing AA (andersen for example) : when calling with opt, this works well, but when adding in local PassManager ( with add() ), it is not working (I test this with the