search for: debugir

Hi List, My IR compiles fine and runs. I've tried to add DebugIR pass so as to be able to debug and profile it (since source is an SQL query all that I can debug and profile is IR itself). When I tried to add it to pass manager I got the following assert: Program received signal SIGABRT, Aborted. 0x00007ffff3fe4425 in __GI_raise (sig=<optimized out>) at...

...ed to have debug info at the LLVM IR level (because my frontend's semantics vastly differ from IR that it doesn't make much sense to use it). Asm can sometimes be too "low level", so it's nice to have the ability to single-step at the IR level. The pass that used to do this (-debugir) bitrotted and was removed from tree. I spent the weekend bringing it back: https://reviews.llvm.org/D40207 I'd love to have some help with reviews and tests I should write for this, because I don't understand the debug info side of LLVM very well. Also, is there a protocol to have a revi...

Please do take over the pass revival. College hasn't left me with the bandwidth to continue this side project :) If there's small things here and there, I'd be happy to pitch in. However,.whipping the patch into shape is beyond me right now. Thanks Siddharth On Fri 23 Mar, 2018, 00:53 via llvm-dev, <llvm-dev at lists.llvm.org> wrote: > > >> This work could also

>> This work could also be used to fix [3]. Although this probably needs >> more though because there's the question of whether we should preserve >> existing debug information in an LLVM IR file or write over it when it >> is given to Clang. > > > If foo.ll contains edited debug info, `clang -g` shouldn't silently drop the > edits. A warning + no-op

>> This work could also be used to fix [3]. Although this probably needs >> more though because there's the question of whether we should preserve >> existing debug information in an LLVM IR file or write over it when it >> is given to Clang. > > If foo.ll contains edited debug info, `clang -g` shouldn't silently drop > the edits. A warning + no-op seems

...lvm.org> wrote: > Hi, > > I recently had the need to see the correspondence between some Clang > generated LLVM IR and the compiled machine code within a debugger > (lldb in this case). Unfortunately it looks like the functionality to > do this used to be in a pass called 'DebugIR' but was removed due to > the lack of a maintainer [1]. > > It appears an attempt was made [2] to revive this but it appears to > have stalled. > > I am very keen to see this feature land back in LLVM, so I'd either > like to take over [2] (only if the original author i...

Hi, I recently had the need to see the correspondence between some Clang generated LLVM IR and the compiled machine code within a debugger (lldb in this case). Unfortunately it looks like the functionality to do this used to be in a pass called 'DebugIR' but was removed due to the lack of a maintainer [1]. It appears an attempt was made [2] to revive this but it appears to have stalled. I am very keen to see this feature land back in LLVM, so I'd either like to take over [2] (only if the original author is no longer interested) or rewrit...

...gt; Hi, >> >> I recently had the need to see the correspondence between some Clang >> generated LLVM IR and the compiled machine code within a debugger >> (lldb in this case). Unfortunately it looks like the functionality to >> do this used to be in a pass called 'DebugIR' but was removed due to >> the lack of a maintainer [1]. >> >> It appears an attempt was made [2] to revive this but it appears to >> have stalled. >> >> I am very keen to see this feature land back in LLVM, so I'd either >> like to take over [2]...

...x0000000101a6a1ff (anonymous namespace)::DIUpdater::DIUpdater(llvm::Module&, llvm::StringRef, llvm::StringRef, llvm::Module const*, llvm::ValueMap<llvm::Value const*, llvm::WeakVH, llvm::ValueMapConfig<llvm::Value const*> > const*) + 111 27 lli               0x0000000101a6a0e1 llvm::DebugIR::createDebugInfo(llvm::Module&, llvm::OwningPtr<llvm::Module>&) + 497 28 lli               0x0000000101a6a39c llvm::DebugIR::runOnModule(llvm::Module&) + 268 29 lli               0x0000000101563276 main + 790 30 libdyld.dylib     0x00007fff8975c7e1 start + 0 31 libdyld.dylib     0...

Looks like a bug in the DebugIR pass. I imagine that without the -debug–ir flag, you will be able to get a little further. Nonetheless, can you send me the "bitcodetestqtapp" that you're running, or steps to reproduce? I'd love to take a look. Thanks, Dan From: Shailesh Kumar <shaileshkumar41 at yahoo.com&...

...gt; Hi, >> >> I recently had the need to see the correspondence between some Clang >> generated LLVM IR and the compiled machine code within a debugger >> (lldb in this case). Unfortunately it looks like the functionality to >> do this used to be in a pass called 'DebugIR' but was removed due to >> the lack of a maintainer [1]. >> >> It appears an attempt was made [2] to revive this but it appears to >> have stalled. >> >> I am very keen to see this feature land back in LLVM, so I'd either >> like to take over [2]...

Hi I know that LLVM provide some debug API for us to know the source code information. For example, every IR instruction's source line number and column number. However, are there any method to get a mapping from IR instruction to binary address directly. I don't want to use dwarf line mapping table as a bridge. I think the binary is generated by clang and llvm. I think there definitely

...this has been contributed by someone from Intel > at some point but got removed later on for reasons I don't recall. > It might be worth to scan the archives. > Thanks for your response, I have searched in archives and I think I found some references to what you're talking about (DebugIR?). Though, I haven't been able to find the reason as to why it was removed. My concern now is whether this GSoC project has become obsolete because of this. I'll continue trying to find the reason why this was removed. Kind regards, Janek

You can attach debug info to the Llvm module about LLVM IR, at which point one can throw the executable into any debugger and get llvm level debugging. I've started a patch to revive this feature (DebugIR pass). I've been sidetracked the past month, but I'll come back to it soon :) https://reviews.llvm.org/D40778 Cheers, Siddharth On Thu 4 Jan, 2018, 09:23 Brenda So via llvm-dev, <llvm-dev at lists.llvm.org> wrote: > Hi > > I am looking at open projects that LLVM want to im...

On 03/25/2016 03:28 AM, Philip Reames via llvm-dev wrote: > I've scanned over your proposal, but am not quite sure I understand your > objective. Is your intent to be able to step through IR source in a > debugger and inspect intermediate state? If so, you may consider > whether "simply" inserting debug metatadata into your IR which describes > the IR source, and

...by someone from Intel >> at some point but got removed later on for reasons I don't recall. >> It might be worth to scan the archives. >> > > Thanks for your response, I have searched in archives and I think I > found some references to what you're talking about (DebugIR?). Though, > I haven't been able to find the reason as to why it was removed. My > concern now is whether this GSoC project has become obsolete because > of this. > > I'll continue trying to find the reason why this was removed. IIRC, it was removed because it was buggy, and...

Hi I am looking at open projects that LLVM want to implement and it seems to be a suggestion to write an LLVM IR level debugger. Is there any existing LLVM projects out there that already does such a thing? If not, I would like to try implementing one myself. By debugger, I think it means something like gdb, where you can insert breakpoints, run code and observe layout of registers and memory at

I believe the perf tool cannot profile/analyze the JITed code in MCJIT model. Can you please confirm this ? I was working on a patch to fix this. Another question, is the there any support to map the llvm IR with x86 generated assembly ? so its easier to analyze the code generator. -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, I'm working on a binary translator project that emits an .ll file. I'm trying to debug it in Visual Studio and would like to be able to step through and see my generated .ll file in the debugger. Does LLVM support debug information corresponding to an input .ll file? My hunch is "no, as it expects debug info to come from Clang." I assemble it using: llc -filetype=obj

...gt;>> at some point but got removed later on for reasons I don't recall. >>> It might be worth to scan the archives. >>> >> >> Thanks for your response, I have searched in archives and I think I >> found some references to what you're talking about (DebugIR?). Though, >> I haven't been able to find the reason as to why it was removed. My >> concern now is whether this GSoC project has become obsolete because >> of this. >> >> I'll continue trying to find the reason why this was removed. > > IIRC, it was remo...