similar to: [LLVMdev] Simpler way to insert instructions into the program

Thank you Chris, for your hint, but I am still too stupid. I tried two versions asm_arguments.push_back(Type::VoidTy); FunctionType *asm_type = FunctionType::get(Type::VoidTy, asm_arguments, false); Alternatively FunctionType *asm_type = FunctionType::get(Type::VoidTy, std::vector<const Type*>(), false); . Can you give me a snippet of example code, or somebody else?

On Jul 31, 2009, at 10:24 AM, Michael Graumann wrote: > Hi, > I’ am trying to insert an InlineAsm Instruction in my pass, which > FunctionType do I need for Inlineasm? > If I understand it right, I need a call instruction to insert the > new produced InlineAsm? > > Thanks for help Inline asm works like a "callee". So for: call void asm sideeffect

Hello all; So my goal is to insert some (self-written) function calls in the LLVM IR. I can achieve it with a ModulePass and using the getOrInsertFunction() call. For a ModulePass I follow the steps- 1. Compile the code (in which call instructions are to be inserted) to LLVM IR 2. Compile the file (which contains the *called* external function ) to LLVM IR 3. Link them together and run the

Hi, I' am trying to insert an InlineAsm Instruction in my pass, which FunctionType do I need for Inlineasm? If I understand it right, I need a call instruction to insert the new produced InlineAsm? Thanks for help, Michael for (BasicBlock::iterator bi = i->begin(), be = i->end(); bi != be; ++bi){ std::vector<const Type*> asm_arguments;

Hi, both versions are working: FunctionType *asm_Ftype = FunctionType::get(Type::VoidTy, std::vector<const Type*>(), false); InlineAsm* Iasm = InlineAsm::get(asm_Ftype,"isync","~{dirflag},~{fpsr},~{flags}",true); How can I insert this InlineAsm, because it is no instruction and this way it will not work: Instruction *pi = bi;

Thank you for your help I found the problem, as hook() is a no paramter function,so for(Function::arg_iterator i = hook->arg_begin(), e = hook->arg_end(); i != e; ++i) { Args.push_back(i); /////////////Wong } we can add a call by Instruction *newInst = CallInst::Create(hook,

Duncan Sands <baldrick <at> free.fr> writes: > > Hi Anshul, > > > I am creating a pass that will pass loaded value by load instruction to an > > external function. > > I don't know how to do it.Please Help. > > your question is too vague for anyone to be able to help you. Add details, > for example provide the code for your pass. > >

Hello, everyone I am new to LLVM, now I got a problem I want to add a function call before sleep(int a, int b) code below #include <stdio.h> int sleep(int a, int b) { return a+b; } int main(int argc, char **argv) { sleep(1,2); } after use opt -load ../llvm-2.8/Release+Asserts/lib/bishe_insert.so -bishe_insert <1.bc> 2.bc I want get the code #include <stdio.h>

Hi Tim, Thank you for the quick response! so you'd probably check you're looking at a BranchInst and check BI->getSuccessor(0)->getName() (& 1 if it's conditional) I initially was printing out the result from getName() (I.getParent()->getName()) and it printed out nothing sadly. when parsing the instructions in SelectionDAGBuilder but it was only visiting instructions in

Hi llvmer, I am trying to learn how to use llvm. My question is described as the following, there has already a testcase code, and I get bytecode by using llvmgcc. What I want to do is to insert a call funcation into each basic block, which is for statistic some information. 1) I implement call function in another c/cpp file and can I insert the external call function to existed bytecode ? if it

> What I want to do is to insert a call funcation into each basic > block, which is for statistic some information. I recommend that you look at the various pieces of code under llvm/lib/Transforms/Instrumentation, e.g. BlockProfiling.cpp and TraceBasicBlocks.cpp. They do essentially the same thing as you are trying to do. > 1) I implement call function in another c/cpp file and >

Hi llvm-devel, I have migrated my codebase from llvm-3.6 to llvm 3.8.1-stable. Although I was able to resolve most of the problems, I am facing issues resolving the following: To insert an instruction immediately after the first instruction within a basic block, I first get all instructions in my basic block in an instruction container list. Once that is done, I insert my new instruction in the

Hi Chuck, > std::vector<Instruction *>::iterator p; > Instruction * pi = PREVIOUS_POSITION; > BasicBlock * pb = PREVIOUS_POSITION->getParent(); > > for(p = coll.begin(); p != coll.end(); ++p){ > Instruction * CurI = * p; > Instruction * CloneI = CurI->clone(); clone doesn't know have any magical way of knowing that it should update the instruction's

Jon, > You want: > TaintVar->insertAfter(FirstI); This worked! Thank you. On Thu, Aug 25, 2016 at 9:38 AM, Jonathan Roelofs <jonathan at codesourcery.com> wrote: > > > On 8/25/16 7:01 AM, Shehbaz Jaffer via llvm-dev wrote: >> >> I tried an alternative way of adding instruction by first getting the >> first instruction of the basic block, and then

How does one move instructions from one basic block to another? I tried this: (IB is an Instruction* as is current_last, current_BB is a BasicBlock*) IB->getParent()->getInstList().remove(IB); current_BB->getInstList().insert(current_last, IB); and I get this assertion: Assertion `V->getParent() == 0 && "Value already in a container!!"' failed.

Hi all, I am a newbie in LLVM and I am trying to replace the function like: old function || new function ======================================= int haha(int a) { int haha(int a, char* ID) { ===> } } Of course in the newly replaced function "int haha(int,

Hi, I'm getting a very strange behaviour while adding already created instructions in batches into basicblocks instead of creating and inserting them immediately. Because I need to insert instructions in a certain specific order inside multiple different BBs I found it easy to use the IRBuilder to create instructions without inserting them into a BB, storing them somewhere (vector, map

Hi all, I wrote a function pass. In the pass, it ran through all the instruction that call to functions. When arriving at the exact function that I m interested in, it would insert a self-made function. Now I've finished the pass, the compilation is successful. The pass can find the function I like and can insert the CallInst to call my check function. BUT, when running the

Thanks for your reply! I send the message to the mail list this time~ Did you mean I need to initialize M and the Context? Is that really necessary? Does all the function need to be wrapped in the module? I remember you once said "you can just declare the function (i.e. no need to give it a body), and call it.You can then link with an object file that defines it. This is simpler than

Hi, Thank Brian Gaeke so much. Following TraceBasicBlocks.cpp, I modified the code as below and could insert instruction or function I need into anywhere in Module. But it works well without BB->getInstList().push_back(InstrCall), and if I add the BB->getInstList().push_back() following new CallInst(), I got error information when runing opt. What is the reason for it? And is it necessary