similar to: [LLVMdev] LLVM Instruction to ICmpInst conversion

Hello, I get a segfault and I cannot find the reason. The main computation is done in " `struct patternDC : public FunctionPass` " but I also have class ifChecker { public: virtual bool operEquiv(Instruction *I1, Instruction *I2); }; I have in bool patternDC::runOnFunction(Function &F) { ... ifChecker* CC=new ifChecker(); if (

Hello everyone, I encounter a segfault problem in my LLVM function pass. I think the problem is that I dereference an uninitialized pointer from an array of Instruction* elements which results in undefined behavior. The array is : Instruction** ifsInstrArray = new Instruction*[100]; The problem appears only sometimes (during runOnFunction && visiting BasicBlocks and Instructions).

Hi Alexandru, > The compilation error is : `error: ‘LD100’ was not declared in this scope.` > > On Mon, Jan 28, 2013 at 11:31 AM, Alexandru Ionut Diaconescu < > alexandruionutdiaconescu at gmail.com> wrote: > >> Hello everyone, >> >> Can you please tell me if it is possible in LLVM to cast a `Value*` to an >> `Instruction*/LoadInst*` if for example

The compilation error is : `error: ‘LD100’ was not declared in this scope.` On Mon, Jan 28, 2013 at 11:31 AM, Alexandru Ionut Diaconescu < alexandruionutdiaconescu at gmail.com> wrote: > Hello everyone, > > Can you please tell me if it is possible in LLVM to cast a `Value*` to an > `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is true? > In my

Alexandru Ionut Diaconescu wrote: > Hello everyone, > > Can you please tell me if it is possible in LLVM to cast a `Value*` to > an `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is > true? http://llvm.org/docs/ProgrammersManual.html#the-isa-cast-and-dyn-cast-templates In my particular piece of code: > > Value* V1 =

Hello everyone, Can you please tell me if it is possible in LLVM to cast a `Value*` to an `Instruction*/LoadInst*` if for example `isa<LoadInst>(MyValue)` is true? In my particular piece of code: Value* V1 = icmpInstrArray[i]->getOperand(0); Value* V2 = icmpInstrArray[i]->getOperand(1); if (isa<LoadInst>(V1) || isa<LoadInst>(V2)){ ...

The script is corect ? #!/bin/bash /sbin/iptables -F -t mangle /sbin/iptables -X /sbin/iptables -t mangle -N mark_horiz_src /sbin/iptables -t mangle -N mark_horiz_dst /sbin/iptables -t mangle -A PREROUTING -i eth0 -j mark_horiz_src /sbin/iptables -t mangle -A PREROUTING -i eth1 -j mark_horiz_dst /sbin/iptables -t mangle -A OUTPUT -o eth0 -j mark_horiz_dst /usr/local/bin/mipclasses -s

Hello everyone ! I have some problems of getting the index of a basic block. for (Function::iterator II = F.begin(), EE = F.end(); II != EE; ++II, ++ii) { BasicBlock* BB=II; I have segfaults or cannot use complex structures of several methods that I found in LLVM. Do you know how to use as simply as possible the methods found at : http://llvm.org/doxygen/Instructions_8h_source.html#l02136

In a pass I would like to insert a ICmpInst/BranchInst pair to check if 2 GlobalVariables are equal or not. If they are not I would like to call a function. I've tried splitting the current block and then inserting before the existing instructions, but for some reason this seems to ruin the iterator(i). What is the correct way todo something like this? void checkShadowPtr(Module &M,

I'm trying to come up with a simple example of using ICmpInst in a Pass. On each of the branches(true, false) I'd like to call a separate function and then resume(to the code that was already there). In this example i is a inst_iterator to Instruction the Pass is currently on. Now it segfaults opt before I can even get a dump() on it. Does anyone see what I am doing wrong? BasicBlock

Be careful about oversimplifying signed integer comparisons -- integer arithmetic can easily overflow, so you cannot transform A > B to A - B > 0. The compare instructions in most processors do not simply subtract and test the most significant bit; they compute what the sign of the difference would be in extended precision. On Apr 17, 2010, at 1:00 PM, llvmdev-request at cs.uiuc.edu wrote:

Hi, as discussed in [1], this series adds a new getprogname module. All it does is providing a getprogname function, much like what is found on e.g. *BSD systems, and using it in gnulib instead of progname. Also, using it explicitly by modules avoids gnulib users the need of either use the progname module (GPL), or to provide program_name (and call set_program_name manually, which is not always

On Tue, Oct 11, 2011 at 7:22 PM, ret val <retval386 at gmail.com> wrote: > In a pass I would like to insert a ICmpInst/BranchInst pair to check > if 2 GlobalVariables are equal or not. If they are not I would like to > call a function. I've tried splitting the current block and then > inserting before the existing instructions, but for some reason this > seems to ruin the

On Tue, Sep 27, 2011 at 7:28 PM, ret val <retval386 at gmail.com> wrote: > I'm trying to come up with a simple example of using ICmpInst in a > Pass. On each of the branches(true, false) I'd like to call a separate > function and then resume(to the code that was already there). > > In this example i is a inst_iterator to Instruction the Pass is > currently on. Now

Hi, i am playing the ScalarEvolution these days. i found the the ScalarEvolution will simply return a SCEVUnknow for a ICmpInst, so i think maybe great to add a new kind of SCEV to the ScalarEvolution framework. for example, if i run ScalarEvolution on the bc file generate from the following C source file: int f(int a, int b, int c, int d) { return (2 * a + 5 * c + 2) > (4 * d - 3*b

Yes sure here they are: The first one that i have received 2day and does not work almost at all: #!/bin/bash ETH_IN="eth1" ETH_OUT="eth0" BANDA_TOTALA="2Mbit" # pentru neclasificati ar trebui sa fie banda minima - 1k - aici ar trebui sa ajunga trafic necunoscut, # care nu e organizat in shape-uri BANDA_NECLASIFICATI="8kbit" #Shape generale /sbin/tc

%0 = icmp eq i32 %y, 0 In the above instruction how can i know that the comparison is equality comparison?? --Rajwinder Singh -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100628/8d8e5cb1/attachment.html>

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello, I read and find a way (well, there seems to be several equal implementations) to collect the ssh keys of machines. However they all give only the choice to choose between the key formats. But is there a way to collect both keys of a machine, the rsa _and_ the dss key (and maybe the rsa1 too)? I didn''t find a way to solve this as

This addition converts strlen() calls to strnlen() when the result is compared to a constant. For example, the following: strlen(s) < 5 Becomes: strnlen(s, 5) < 5 That way, we don't have to walk through the entire string. There is the added overhead of maintaining a counter when using strnlen(), but I thought I'd start with the general case. It may make sense to only use this

On Wed, Dec 12, 2012 at 01:59:55PM -0800, Dan Gohman wrote: > The bug here isn't in clang's use of noalias or in BasicAliasAnalysis' > implementation of noalias; it's in the code that's optimizing the > icmp. Let's come back to this. The attached patch decouples InstSimplify from the alias analysis and provides the conservative logic for when pointers are not