similar to: [LLVMdev] RegisterPass isAnalysis parameter

On Thursday 25 February 2010 19:24:30 Trevor Harmon wrote: > Hi, > > I'm confused about the is_analysis parameter of the RegisterPass > constructor (defined in PassSupport.h). The only explanation I can > find is that is_analysis should be set to true if the pass is "an > analysis pass, for example dominator tree pass". Can someone please > clarify what is meant

On Feb 25, 2010, at 5:45 PM, David A. Greene wrote: > The RegisterPass template takes care of notifying the PassManager > that the pass exists. One of the advantages of PassManager is > that it decouples pass execution from the rest of the infrastructure > so the class need not be visible to anything outside the > implementation > of the pass itself. Even though the

On Feb 26, 2010, at 7:42 PM, Tom Prince wrote: > You cannot refer to anything in anonymous namespace by name from > another file, however, if you have a pointer, say, then you can > still use the > pointer. Yes, that would make sense, except I don't see any pointers being passed. The relevant line in lib/Transforms/Hello.cpp is: static RegisterPass<Hello>

On Fri, Feb 26, 2010 at 05:22:49PM -0800, Trevor Harmon wrote: > On Feb 25, 2010, at 5:45 PM, David A. Greene wrote: > > > The RegisterPass template takes care of notifying the PassManager > > that the pass exists. One of the advantages of PassManager is > > that it decouples pass execution from the rest of the infrastructure > > so the class need not be visible to

HI, Developers: I linked libLTO.so in $LLVMROOT/Debug/lib however, my program crashes in assertion at 149line [Pass.cpp] void RegisterPass(const PassInfo &PI) { bool Inserted = PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second; assert(Inserted && "Pass registered multiple times!"); } i confirm that there is only one static variable

Hi, Yeah I found that it is running LLVM's functions. The functions that are running are: main llvm.dbg.func.start llvm.dbg.stoppoint scanf llvm.dbg.region.end But I dont want all the functions to be called as I am using Dominator Trees and whenever I the statement DominatorTree &DT = getAnalysis<DominatorTree>(F); is encountered by functions other than main, it gives error.

On Jul 22, 2010, at 2:05 PM, John Criswell wrote: > If you write your pass as a ModulePass, then you can iterate over the > functions in any order that you want. I had considered that, but my FunctionPass depends on other passes processing the functions first: void MyPass::getAnalysisUsage(AnalysisUsage &AU) const { AU.addRequired<UnifyFunctionExitNodes>();

John Criswell wrote: > Trevor Harmon wrote: >> On Jul 22, 2010, at 2:05 PM, John Criswell wrote: >> >> >>> If you write your pass as a ModulePass, then you can iterate over the >>> functions in any order that you want. >>> >> >> I had considered that, but my FunctionPass depends on other passes >> processing the functions first:

On Feb 8, 2010, at 8:51 PM, Duncan Sands wrote: > this can be done using debug info. Check out > http://llvm.org/docs/SourceLevelDebugging.html Wow, that threw me for a loop. I'm using the 2.6 release, thinking I was up to date, but its debug output doesn't look anything like what's described in the above link. It appears to document the upcoming 2.7 version, which

Hi. I'm trying to implement a module pass which can be dynamically loaded by `opt` (against up-to-date llvm from svn). Despite what the tutorial (http://llvm.org/docs/WritingAnLLVMPass.html) states in my module pass I cannot perform getAnalysis and fetch the function pass result. When trying to do so `opt` fails with the following mesage: [***@*** ***]$ opt -load

On Feb 9, 2010, at 11:13 AM, Trevor Harmon wrote: > Is there any information about these changes and why they were > necessary? I think I found it: http://nondot.org/~sabre/LLVMNotes/EmbeddedMetadata.txt Still looking for an API to access the metadata... Trevor

ambika wrote: > Hi, > > Yeah I found that it is running LLVM's functions. The functions that are > running are: > > main > llvm.dbg.func.start > llvm.dbg.stoppoint > scanf > llvm.dbg.region.end > > But I dont want all the functions to be called as I am using Dominator > Trees and whenever I the statement > > DominatorTree &DT =

Trevor Harmon wrote: > On Jul 22, 2010, at 2:05 PM, John Criswell wrote: > > >> If you write your pass as a ModulePass, then you can iterate over the >> functions in any order that you want. >> > > I had considered that, but my FunctionPass depends on other passes > processing the functions first: > Two things to consider: 1) The PassManager

LLVM has a relatively large number of proprietary replacements for standard C++ functions and classes. One of these is dyn_cast to replace dynamic_cast. The two calls appear to be semantically equivalent; the only difference that I can see is that dyn_cast reportedly works on classes that have no v-table [1]. Could someone please explain why I should use dyn_cast instead of dynamic_cast?

On Fri, Feb 27, 2009 at 4:32 PM, Jay Foad <jay.foad at gmail.com> wrote: > >> Could you please rig Makefile.rules or something to print out the value > >> of $(LLVM_ON_WIN32) ? The only way I can think of this happening is if > >> that's erroneously false. > > This works for me: > > Index: Makefile.rules >

On Mar 30, 2010, at 7:51 PM, John Criswell wrote: > I'm too lazy to convert your .dot file into a graph file What format should I have posted? (I'm not sure what you mean by "graph file".) I had thought that .dot was the preferred format here, since that's what LLVM generates (e.g., "opt -dot-cfg ..."). > First, LLVM does not guarantee that a function

Hi, What's the proper way to abort a pass if something goes wrong (e.g., in the pass's constructor)? Do I simply call abort()? I looked through the existing passes but didn't see an example of this. Thanks, Trevor

Hey folks, As part of our ongoing quest to eliminate static constructors from the LLVM libraries (in order to improve startup times for applications that link against them), I'm going to be eliminating the RegisterPass class. They will be replaced with an initialization-function based system that I will detail in a future email. But, for now, what you need to know is that these classes are

I have seen INITIALIZE_PASS(LiveVariables, "livevars", "Live Variable Analysis", false, false); in the llvm/lib/codegen/LiveVariables.cpp, where LiveVariables is a subclass of MachineFunctionPass, and #define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \ static RegisterPass<passName> passName ## _info(arg, name, cfg, analysis) in PassSupport.h Is this code used

Hi, I believe that Module::iterator iterates through all the functions in a program. Am i wrong somewhere? I run this for different files, each having one function each ie main(), but for one it loops twice, and for another it loops thrice. for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I) Can someone explain this behavior. regards, Ambika