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I found a private ErrorStr member, but didn't find the get function of this member, could you tell me how I can get the error message? On Wed, Sep 18, 2019 at 4:02 PM mayuyu.io <admin at mayuyu.io> wrote: > Isn’t there a method in EngineBuilder to get the error message or > something? > I assume it’s you didn’t link in the JIT module > > Zhang > > 在 2019年9月18日，11:04，Yafei Liu via llvm-dev <llvm-dev at lists.llvm.org> 写道： > > I ju...

Hi However, frontend may also do various operations on the source code and one line number and column number could map to more than one binary address. Why LLVM IR cannot? Regrads Muhui 2018-06-12 23:18 GMT+08:00 mayuyu.io <admin at mayuyu.io>: > In theory that’s not exactly possible/accurate. Due to various operations > in the Backend like Instruction Legalization, one IR instruction might got > emitted into multiple assembly instruction, for example > > Zhang > > > 在 2018年6月12日，22:...

...t in Release mode. The version is 6.0.0. I think that a similar code worked on verison 3.9.0. It is probably a null pointer dereference occurring in eraseFromParent(). I checked and reconfirmed that the instruction had no uses. Perhaps I should rebuild LLVM. Thanks. On Wed, Aug 8, 2018 at 9:03 PM, mayuyu.io <admin at mayuyu.io> wrote: > Hmmmm that’s strange. Do you get an assert when you build LLVM with this > code in Debug Mode or is it simply null pointer dereference? > On a side note, usually when doing transforms similar to yours I use > IRBuilder’s CreateXXX followed by a Re...

...ecution of a specific .ll file. I wanted to know when a store and load instruction were executed. Maybe extending the Interpreter class was not the best option so I'm happy to hear suggestions. As a curiosity, why do you think that class should be rewritten? Thanks On Mon, Mar 4, 2019, 08:15 mayuyu.io <admin at mayuyu.io> wrote: > I dont quite understand the meaning of making almost all the visit > methods, care to explain? > > On a side note, last time I checked that part I think it probably needs a > full rewrite from ground up IMHO > > Zhang > > > 在 201...

...IR instructions, so we don't maintain any information > that could produce such a mapping. > > --paulr > > > > *From:* llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] *On Behalf Of *Muhui > Jiang via llvm-dev > *Sent:* Wednesday, June 13, 2018 3:09 AM > *To:* mayuyu.io > *Cc:* llvm-dev > *Subject:* Re: [llvm-dev] IR to binary address mapping > > > > Hi > > > > However, frontend may also do various operations on the source code and > one line number and column number could map to more than one binary > address. Why LLVM IR ca...

...allowed the attribute. Even if I want to > use/inline > > a function later on in the pipeline. > > > > Regards, > > Soham Sinha > > PhD Student, Department of Computer Science > > Boston University > > > > > > On Tue, Jun 26, 2018 at 8:30 AM mayuyu.io <admin at mayuyu.io> wrote: > >> > >> Out of curiosity, how does an unused declaration affect the emitted > object > >> file > >> > >> Zhang > >> > >> > 在 2018年6月26日，08:48，Soham Sinha via llvm-dev <llvm-dev at lists.ll...

For the same reason GCC allowed the attribute. Even if I want to use/inline a function later on in the pipeline. Regards, Soham Sinha PhD Student, Department of Computer Science Boston University On Tue, Jun 26, 2018 at 8:30 AM mayuyu.io <admin at mayuyu.io> wrote: > Out of curiosity, how does an unused declaration affect the emitted object > file > > Zhang > > > 在 2018年6月26日，08:48，Soham Sinha via llvm-dev <llvm-dev at lists.llvm.org> > 写道： > > > > clang doesn't seem to respec...

...); Value* mul = builder.CreateMul(lhs, rhs); for (auto& U : op->uses()) { User* user = U.getUser(); user->setOperand(U.getOperandNo(), mul); } //I->eraseFromParent(); dels.push_back(I); } } for (auto &I : dels) { I->eraseFromParent(); } ... On Wed, Aug 8, 2018 at 6:16 PM, mayuyu.io <admin at mayuyu.io> wrote: > Hi: > As stated in the documentation you shouldn’t modify it while iterating as > this invalidates the iterator. Try save the pointers to a vector outside > your loop and perform erasing in a new loop following your current one. > > Zhang &g...

To my knowledge that intrinsic IS generated by frontends like Clang when using _builtin_return_address(), i could be wrong though Zhang > 在 2018年9月5日，10:47，Bekket McClane via llvm-dev <llvm-dev at lists.llvm.org> 写道： > > and

There is no “switch” instruction in the target object code. It usually gets compiled into a switch table with instructions to load from it. Afaik Zhang > 在 2019年12月26日，17:49，n3v3rm03 via llvm-dev <llvm-dev at lists.llvm.org> 写道： > > Sorry I found an early thread discussing this question. I guess I shouldn't create lower switch pass like this. > However, I have another

Hi: Since you mentioned this, I was wondering if Chris or someone else could take over the existing /r/LLVM and make it an official forum or something. In that case we had Reddit’s anti-spam measures in place and probably a better forum-like experience. Mailing list could be really disturbing occasionally Zhang > On 26 Mar 2018, at 18:22, Praveen Velliengiri via llvm-dev <llvm-dev at

在 2018年05月29日 14:58, mayuyu.io 写道: > Any hint on the date of LLVM Social ShangHai? Wu Wei scheduled July 1th http://hellollvm.org/ > > Zhang > >> 在 2018年5月29日，14:22，Leslie Zhai via llvm-dev <llvm-dev at lists.llvm.org> 写道： >> >> Hi Chris, >> >> Thanks for your response! >&g...

Hi! I think that comments section will help people to organize the Q&A in the same webpage. But it also leads to spam as you said, However, I don't have any strong rationale for enabling them :) Thanks for your reply Chris! Pree On 26 March 2018 at 22:45, Chris Lattner <clattner at nondot.org> wrote: > On Mar 26, 2018, at 10:12 AM, Praveen Velliengiri via llvm-dev < >

Hi, I going through the Interpreter class source code and I think making almost all the visit methods (maybe not visitInstruction yet) would really help anybody that wants to create any sort of tracer or similar. Would be a patch in this case worthy? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi all, I have encountered the following instruction: %.0.i = phi i8* [ %9, %8 ], [ %11, %10 ] How can I get the %8 and %10? I'm using http://llvm.org/doxygen/classllvm_1_1PHINode.html as a reference but I cannot understand how to do that. Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL:

I want to create an add instruction that takes two constant operands at the LLVM IR level. I use the IRBuilder class, but nothing happens. Here is part of the runOnFunction() method of my function pass: ... LLVMContext &Context = F.getContext(); IRBuilder<> builder(&Instruction); Value *Lef = ConstantInt::get(Type::getInt32Ty(Context), 4); Value *Rig =

I just copy the latest code in HowToUseJIT and run, but the EngineBuilder(std::move(Owner)).create() keeps return null, any idea why? Here's my CMakeList: cmake_minimum_required(VERSION 3.12) project(llvm_test) set(CMAKE_CXX_STANDARD 14) find_package(LLVM REQUIRED CONFIG) llvm_map_components_to_libnames(llvm_libs support core irreader orcjit native) add_executable(llvm_test main.cpp)

You are probably calling setName() on the called Function, which in-turned renamed the called Function instead of replacing the called function. Depending on your use-case, if you are certain that you only need to modify CallInsts, then you could simply call CallInst::setCalledFunction , otherwise it’s probably wiser to use CallSite as a wrapper for both CallInst and InvokeInst. Do note, however,

Hope live broadcast ! <br/><br/>Thanks,<br/>yaoxiao 在 2018-05-29 15:02:30，"Leslie Zhai via llvm-dev" <llvm-dev at lists.llvm.org> 写道： > > >在 2018年05月29日 14:58, mayuyu.io 写道: >> Any hint on the date of LLVM Social ShangHai? >Wu Wei scheduled July 1th http://hellollvm.org/ > > >> >> Zhang >> >>> 在 2018年5月29日，14:22，Leslie Zhai via llvm-dev <llvm-dev at lists.llvm.org> 写道： >>> >>> Hi Chris, >>&g...

clang doesn't seem to respect __attribute__((used)) in C functions. Even if I declare a function like the following: __attribute__((used)) void function(), then also it doesn't declare the function in its IR file if I don't use the function. Is there any other way to force the declaration of "unused" function declarations with clang. I have hacked in clang 6.0.0 in