similar to: [LLVMdev] alloca not in first bb behaving differently

It's not great IR, but it doesn't look like it should actually crash, just (without SROA) produce comparatively bad code. The alloca is only referenced in the basic block that it exists. If this isn't expected to work, then we should probably improve the documentation of alloca in the language reference. David > On 5 Apr 2015, at 04:55, Eric Christopher <echristo at

Thanks all. David why do you say it is particularly bad IR (other than not having gone through SROA). Is it the multiple blocks for early returns? That is how I'm supporting early returns in the middle of a basic block. I couldn't find any other way. On Sun, Apr 5, 2015 at 6:24 AM, David Jones <djones at xtreme-eda.com> wrote: > Data point: > > I use (rarely) alloca in

I always thought that bitcast was a no-op internal llvm thing to fit the IR type system. I currently use sitofp, but I see your point. On Fri, Apr 17, 2015 at 1:04 AM, James Molloy <james at jamesmolloy.co.uk> wrote: > Hi Dave, > > You can still bitcast between i32 and float, for example. > > Cheers, > > James > > On Fri, 17 Apr 2015 at 09:03 Dave Pitsbawn

Is it possible to write LLVM IR but not using C++? I'm exceedingly terrible at C++. I was thinking, isn't it possible to write the IR using Java? I effectively have emit some sort of binary op codes to be passed into llvm right? The same thing for if I wanted to integrate a GC? Could the interfacing be done in any other language? -------------- next part -------------- An HTML

I generally see an announcement on the list for the social events .. but I haven't seen one yet for June. It will be my first social if we're having this. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150601/630af906/attachment.html>

Thanks, Andy. I'm now thinking about the case where the generated code has references to memory addresses in the IR (the only case I suppose is call remoteProcessADDR). I know this is not LLVM specific but what happens when that ADDR changes due to process restart or different machine. I know this is the clients responsibility to put the right address in the call instruction, but generally

Seems like a new change in LLVM has made it so that bitcast of bitcast i8* %1 to %Foo* meaningless? If I'm correct is there any need for the bitcast anymore? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150417/e5bfbc64/attachment.html>

No, I was asking how to extract the code from MCJIT, and you said it use a custom memory manager. When you say that I must treat each section as a block, do you mean that there is inter-block relative offsets need to be maintained? Or that when I get a section, I must copy it to target process memory as a one-shot contiguous block. If it's second, I think we're ok. On Wed, Mar 25, 2015

I recently saw a post about being able to call LLVM APIs from .NET using a C# library. I'm thinking if it'll produce the same code as using the LLVM C++ API. Will it be less efficient? If it is the same why wouldn't every one use a higher level language like C# or Java to write their compiler? -------------- next part -------------- An HTML attachment was scrubbed... URL:

Aha. Thanks. Seems like I need to call mapSectionAddress with the target address. But how I copy the code? What function would I call? On Wed, Mar 25, 2015 at 4:32 PM, Kaylor, Andrew <andrew.kaylor at intel.com> wrote: > Yes, that is one of the intended use models for MCJIT. > > > > If you look at the source for ‘lli’ you’ll find an option called > “remote-mcjit” which

On 10/13/14 11:44 AM, Eli Bendersky wrote: > On Mon, Oct 13, 2014 at 10:35 AM, Dave Pitsbawn <dpitsbawn at gmail.com> wrote: > >> Is it possible to write LLVM IR but not using C++? >> >> I'm exceedingly terrible at C++. >> >> I was thinking, isn't it possible to write the IR using Java? >> > > > You can use llvmpy (Python bindings

I am pondering the possibility of encrypting/decrypting some fields in a SQLite backend on-the-fly. The point of the message is not security, I know that''s broken, but whether there''s a technique that provides on-the-fly save/read filters. Of course the solution would need to work transparently in joins, so user.posts.last.title would do the right thing if title

I try to extend db:test:copy_structure task to poulate test database with some existing data everytime i run it. It seems that "after_" task is not called as should be: > namespace :db do > namespace :test do > task :after_clone_structure do > puts "after_clone_structure_to_test" > end > end > end Anyone know what I am doing wrong?

What''s the better thing to do in a before_save if you don''t want the save to continue? raise an exception, or do an errors.add or both? Thanks, Chris Nolan.ca http://kweschun.com/ - Do you have a Kweschun?

Hey guys, I''m having a hard time w/ the after_update callback on rails... As far as I can tell, when I define a after_update callback on a model, the attributes of the object have the same values that they had *before* Base.save was called. I''m probably wrong so here''s the code: UNIT TEST: def test_register_item_adjusts_account_balance account =

A need has arisen to generate code using MCJIT but not in the target process instead in a different process (and possibly even different machine though not in the scope). Reading through the tutorials and MCJIT design document, it seems like this is possible or was kept in mind during design of MCJIT. How do I achieve this? Are there examples? Dave -------------- next part -------------- An

In my language there are a lot of i16 definitions, but almost all of the time they are upgraded to i32 because my add operations only happen on i32. So to be representative to my language definition, I have a lots of Sext/Zext and Truncs pretty much every time I add or subtract. As soon as I pass through InstCombine things look much nicer, all the upcasts and downcasts go away, but my test cases

The recent Rails security issue highlighted a concern I''ve had about Rails deploys; namely, you shouldn''t deploy anything to production that you don''t need there. Rails apps have a number of scripts--potential security holes or DOS targets in this case--along with all the other application code you need. There''s no reason you should have script/server, console,

I have a new @offer that needs to generate a document if saved. But that''s all or nothing: transaction do @offer.save! generate_document end # handle exceptions if needed If save! fails everything is fine, but if generate_document raises an exception @offer is left as a model with timestamps, id, which is not a new_record? anymore (though the database was

I''d like to be able to enable/disable the automatic indexing of documents acts_as_ferret does. Something like MyModel.disable_indexing MyModel.enable_indexing would be perfect. I need this because I do some indexing that requires visiting the parents of the model objects and my import method imports the children first, so the information isn''t there yet. I''d like to