search for: blockfrequencyinfowrapperpass

Hey, I am trying to use the BlockFrequencyInfoWrapperPass to obtain hotness information in my LLVM pass. Attached is a minimal example of code which creates a SIGSEGV. The pass calls AU.addRequired<BlockFrequencyInfoWrapperPass>(); in getAnalysisUsage(..). The problem exists with changed and unchanged IR. The binary is instrumented like this: c...

...ass="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt" ><div dir="ltr" ><div>Hello,<br><br>I notice some strange behavior with the LegacyPassManager. I’ve added a new pass requirement of BlockFrequencyInfoWrapperPass to lib/Transforms/IPO/GlobalOpt.cpp.<br>However, depending on the order of where I add it, I see memory leak errors with LeakSanitizer.</div> <div>Having the following order shows the leak:</div> <div>void getAnalysisUsage(AnalysisUsage &AU) const override {<br&...

...sing the new tools. In order to do that, I'm first generating edge count profile by the PGOInstrumentationGen pass and then interpreting the edge count profile with PGOInstrumentationUse. In the original code, where I had au.addRequired< ProfileInfo >(), I now have *au.addRequired< BlockFrequencyInfoWrapperPass >();au.addRequired< BranchProbabilityInfoWrapperPass >();* Now, I have the following queries. - How do I use the edge count and branch weights data obtained using PGOInstrumentationUse in my pass and replace the *getEdgeWeight()* from ProfileInfo? - If I call *getBlockProfileC...

...ge count profile by the >> PGOInstrumentationGen pass and then interpreting the edge count profile >> with PGOInstrumentationUse. >> >> In the original code, where I had >> au.addRequired< ProfileInfo >(), I now have >> >> >> *au.addRequired< BlockFrequencyInfoWrapperPass >();au.addRequired< >> BranchProbabilityInfoWrapperPass >();* >> Now, I have the following queries. >> >> - How do I use the edge count and branch weights data obtained using >> PGOInstrumentationUse in my pass and replace the *getEdgeWeight()* >>...

...ass and then interpreting the edge count profile >>>> with PGOInstrumentationUse. >>>> >>>> In the original code, where I had >>>> au.addRequired< ProfileInfo >(), I now have >>>> >>>> >>>> *au.addRequired< BlockFrequencyInfoWrapperPass >();au.addRequired< >>>> BranchProbabilityInfoWrapperPass >();* >>>> Now, I have the following queries. >>>> >>>> - How do I use the edge count and branch weights data obtained >>>> using PGOInstrumentationUse in my pass and...

...izeCFGProfilePassPass( + *PassRegistry::getPassRegistry()); + } + + StringRef getPassName() const override { return "CFGProfilePass"; } + +private: + bool runOnModule(Module &M) override; + + void getAnalysisUsage(AnalysisUsage &AU) const override { + AU.addRequired<BlockFrequencyInfoWrapperPass>(); + AU.addRequired<BranchProbabilityInfoWrapperPass>(); + } +}; + +bool CFGProfilePass::runOnModule(Module &M) { + if (skipModule(M)) + return false; + + llvm::DenseMap<std::pair<StringRef, StringRef>, uint64_t> Counts; + + for (auto &F : M) { + if (F.isD...