similar to: [LLVMdev] how to check whether from basicblock A we can go to basicblock B within the same function?

On Fri, 27 Aug 2010, Guoliang Jin wrote: > > > Every basic block ends with a terminator instruction that indicates > > which basic block or basic blocks it should branch to next. Switch, > > invoke, and branch are all terminator instructions. There may be more > > that I don't remember. > > > Why not just use the predecessor and successor iterator? >

> Every basic block ends with a terminator instruction that indicates > which basic block or basic blocks it should branch to next. Switch, > invoke, and branch are all terminator instructions. There may be more > that I don't remember. > Why not just use the predecessor and successor iterator? http://llvm.org/docs/ProgrammersManual.html#iterate_preds

Wenbin Zhang wrote: > ----- Original Message ----- > From: "John Criswell" <criswell at illinois.edu> > To: "Wenbin Zhang" <zhangwen at cse.ohio-state.edu> > Cc: <llvmdev at cs.uiuc.edu> > Sent: Friday, August 27, 2010 5:09 PM > Subject: Re: [LLVMdev] how to check whether from basicblock A we can go to > basicblock B within the same

----- Original Message ----- From: "John Criswell" <criswell at illinois.edu> To: "Wenbin Zhang" <zhangwen at cse.ohio-state.edu> Cc: <llvmdev at cs.uiuc.edu> Sent: Friday, August 27, 2010 5:09 PM Subject: Re: [LLVMdev] how to check whether from basicblock A we can go to basicblock B within the same function? > Wenbin Zhang wrote: >> Dear all,

Wenbin Zhang wrote: > Dear all, > Is there a way to check whether we can go from A to B within a > function when I'm writing a pass? I assume you are asking whether control flow can pass from BasicBlock A to BasicBlock B. In that case, yes: all you need to do is look at the terminator instruction of BasicBlock A and see if it can branch to BasicBlock B. There's a new indirect

Dear all, Is there a way to check whether we can go from A to B within a function when I'm writing a pass? Thanks. Best, --Wenbin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100827/8cf26762/attachment.html>

Hi Cristianno, > I'm trying to get a list of predecessors of a BasicBlock. I'm using a code > similar to that on here > <http://llvm.org/docs/ProgrammersManual.html#iterate_preds>, but it appears to > be more nodes been iterating that it should. Now, when I print out the llvm IR, > I get something like: > […] > while.body: ; preds = %7, %while.cond > […] >

Hi there, I'm trying to get a list of predecessors of a BasicBlock. I'm using a code similar to that on here (http://llvm.org/docs/ProgrammersManual.html#iterate_preds), but it appears to be more nodes been iterating that it should. Now, when I print out the llvm IR, I get something like: […] while.body: ; preds = %7, %while.cond […] for a code that

You can use llvm::sys::Path::GetTemporaryDirectory() and put the inputs and outputs there. Reid On Wed, Jul 7, 2010 at 4:23 PM, Guoliang Jin <jingl1345 at gmail.com> wrote: >  Hi, > > I want to pass parameter to a analysis pass. My pass need to use some > result from some other tools. I can hard code a file name into my pass, > and let my pass read input there, but what if I

Thanks Rafael. I compiled llvm-gcc by myself, and I can compile mysql now. Right now, when I run llvm-gcc a.c -emit-llvm -use-gold-plugin -Wl,debug I got ld: error: cannot open debug: No such file or directory collect2: ld returned 1 exit status I do not know why this is happening. Rafael Espindola wrote: > > Some things to check: > > Run llvm-gcc a.c -emit-llvm -use-gold-plugin

Some things to check: Run llvm-gcc a.c -emit-llvm -use-gold-plugin -Wl,debug This will print the link command line. What is it? Do you get the same error messages if you run just that? Are gold and the plugin linked with the same libstdc++? Cheers On Jun 5, 2010 11:50 PM, "Guoliang Jin" <jingl1345 at gmail.com> wrote: The errors are /usr/lib/libstdc++.so.6: version

On 25 June 2010 03:17, Guoliang Jin <jingl1345 at gmail.com> wrote: >  Hi there, > > I checked out the latest code from the repository, and wanna use the gold > plugin, but I got the following: > > libLLVMgold.so: could not load plugin library > > Do you know why this is happening? > > Also I noticed the name of the library is changed to LLVMgold.so, and I just

On Thu, Jul 22, 2010 at 1:21 PM, Jin Guoliang <jingl1345 at gmail.com> wrote: > On Thu, Jul 22, 2010 at 11:35 AM, Devang Patel <devang.patel at gmail.com>wrote: > >> On Wed, Jul 21, 2010 at 9:50 AM, Jeffrey Yasskin <jyasskin at google.com> >> wrote: >> >> This (Unknown constant! in bitcode writer when -g is used) is a known >> >> bug in

On 19 August 2010 01:25, Guoliang Jin <jingl1345 at gmail.com> wrote: >  Hi, > > I am using gold plugin with the option "-use-gold-plugin > -Wl,-plugin-opt=also-emit-llvm" to compile apache. > > I objdumped the final executable httpd to httpd.S. > > I also compiled those per file bytecode into native code using the > following: > llc filename.o >

On Mon, Jul 19, 2010 at 11:06 PM, Guoliang Jin <jingl1345 at gmail.com> wrote: >  Hi, > > I would like to get the whole program bitcode with debug information in it. > > I tried to use CFLAGS = "-O4 -g", but it ends with the following error: > collect2: ld terminated with signal 6 [Aborted] > Unknown constant! > UNREACHABLE executed at >

On 6 June 2010 13:48, Guoliang Jin <jingl1345 at gmail.com> wrote: > Thanks Rafael. > > I compiled llvm-gcc by myself, and I can compile mysql now. > > Right now, when I run llvm-gcc a.c -emit-llvm -use-gold-plugin -Wl,debug > I got > ld: error: cannot open debug: No such file or directory > collect2: ld returned 1 exit status > > I do not know why this is

If you think a commandline option is the way to go, LLVM makes it pretty easy to do so, see the documentation here: http://llvm.org/docs/CommandLine.html . Mostly you can just add an appropriate "cl::opt<string>" option (for your filename, for example) and you're on your way. ~Will On Wed, Jul 7, 2010 at 9:55 PM, Reid Kleckner <reid.kleckner at gmail.com> wrote: >

On 7/20/2010 1:25 AM, Eli Friedman wrote: > On Mon, Jul 19, 2010 at 11:06 PM, Guoliang Jin<jingl1345 at gmail.com> wrote: >> Hi, >> >> I would like to get the whole program bitcode with debug information in it. >> >> I tried to use CFLAGS = "-O4 -g", but it ends with the following error: >> collect2: ld terminated with signal 6 [Aborted]

Rafael Espindola wrote: > On 6 June 2010 13:48, Guoliang Jin <jingl1345 at gmail.com> wrote: > >> Thanks Rafael. >> >> I compiled llvm-gcc by myself, and I can compile mysql now. >> >> Right now, when I run llvm-gcc a.c -emit-llvm -use-gold-plugin -Wl,debug >> I got >> ld: error: cannot open debug: No such file or directory >>

On Aug 31, 2010, at 9:54 AM, Rafael Espindola wrote: > On 19 August 2010 01:25, Guoliang Jin <jingl1345 at gmail.com> wrote: >> Hi, >> >> I am using gold plugin with the option "-use-gold-plugin >> -Wl,-plugin-opt=also-emit-llvm" to compile apache. >> >> I objdumped the final executable httpd to httpd.S. >> >> I also compiled