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From: Philip Reames <listmail at philipreames.com<mailto:listmail at philipreames.com>> Date: mardi 8 septembre 2015 12:50 To: Benoit Belley <benoit.belley at autodesk.com<mailto:benoit.belley at autodesk.com>>, "llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>" <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> Subject:

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Hi Lang, > MCJIT does not compile lazily (though it sounds like that's not an issue here?) That is not an issue here since the code JIT's once (a few secs) and then run the generated machine code for hours. > Morten - Can you share any test cases that demonstrate the slowdown. I'd love to take a look at this. The code is massive so not practical. However I will try and

Here's a version that doesn't try to do block deletion on it's own. If you use -adce then -simplifycfg, you get what you want. It passes all tests except one, which is that we delete an invoke of a pure function, IE Transforms/ADCE/dce_pure_invoke.ll - I'm not sure why that's bad. The reason we delete it is because it returns false to I.mayHaveSideEffects(), and in particular,