similar to: llvm pass

Hola LLVMers, I was curious about the state of stack alignment on x86. I noticed there are a few bugs outstanding on the issue. I recently added some code which had the effect of throwing an extra function parameter on our stack at runtime, a 4 byte pointer. Esp is now not 16-byte aligned, so instructions like unpcklps xmm1, dword ptr [eps] cause grief. My AllocaInstr instructions are

On Mar 28, 2008, at 5:17 PM, Chuck Rose III wrote: > I was curious about the state of stack alignment on x86. I noticed > there are a few bugs outstanding on the issue. I recently added > some code which had the effect of throwing an extra function > parameter on our stack at runtime, a 4 byte pointer. > > Esp is now not 16-byte aligned, so instructions like unpcklps

Hi All I am a greenhand for LLVM. I find the LLVM generate SSE instrctions for floating pointing computation, is there some method or options to let it generate x87 instructions? Thanks Simon -- >From : Simon.Zhou at PPI, Fudan University -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello, For some reason, I have to stick on llvm 3.3 for a language compiler, I find that the location debug info is attached to each instruction using !dbg, however, I found some of that information is mis-attched and need to be changed, so I want to *know what functions(I checked all funcs in DIBuilder.h but didn't find a appropriate one) are used to attach those !dbg nodes to each

Hi all, I am having trouble booting the ttylinux-xen guest os. I followed the example in the manual and exchanged the values to match my system. I also searched/read this mailing archive. This is the start command: ''xm create -c ttyvm'' where ttyvm is the config file It starts booting and then halts with the error: Root-NFS: No NFS server available, giving up. VFS: Unable to

Hi everyone, I'm interested in variadic functions and how llvm handles them. I discovered that the Clang frontend is doing a great job at lowering the va_arg (precisely __builtin_va_arg) function into target dependent code. I have also seen the va_arg function that exist at IR level. I found some information about va_arg (IR one) that currently does not support all platform. But since 2009,

Hi all, i hope to get the MemoryLocation for argument %1 in a CallInst like "call void @function(i32* %1)", and i found an interface "getForArgument()" which seems available for this. However, i don't know how to correcly fill the 3rd argument TargetLibraryInfo in my own code and can't find an example in google. Does anybody know how to do it? Or some other advice for

dear everyone system:windows XP R2.13.0 I download the windows binary from website and successfully install it ,because I use a proxy server ,when I follow the instrction as follows: I set a system property R_HOME=C:\Program Files\R\R-2.13.0 " R_HOME\bin\i386\Rgui.exe http_proxy=http://211.83.105.140:808/" error:: '\i' is an unrecognized escape in character string starting

Hi Philip, Thank you very much for your answer, the vector declaration example worked. I'm pretty sure the ValueToValueMapTy is the last thing I need because I even saw there is another function that could help me llvm*:*:RemapFunction <http://llvm.org/doxygen/namespacellvm.html#addf0183e92893bdbcde00fc9091dda93>; but my problem is that I don't know how to populate the

Hi Philip, Thanks for the reference, I was able to follow it and copy the code that I saw necessary, but I still have some issues (references are still not updated). I created the function: void populateVMap(llvm::ValueToValueMapTy &VMap, llvm::Function *fOld, llvm::Function *fNew) { llvm::Function::arg_iterator DestI = fOld->arg_begin(); for (llvm::Function::const_arg_iterator J =

Hi everyone, I'm interested in variadic functions and how llvm handles them. I discovered that the Clang frontend is doing a great job at lowering the va_arg (precisely __builtin_va_arg) function into target dependent code. I have also seen the va_arg function that exist at IR level. I found some information about va_arg (IR one) that currently does not support all platform. But since 2009,

I'm trying to create a GlobalVariable that is a ConstantArray. Id like each element to be a pointer to other things in the program(global variables, functions). So that they all have the same type Id like to make the elements void pointers. I think I am going about this wrong, heres how I am doing it: void writeArray(Module &M, GlobalVariable *shadow, Function *val,

Hi Philip, The error happens when the program finishes and it automatically calls the destructors, so it is not an error specifically inside my program. Here's the full code: #include "llvm/ExecutionEngine/ExecutionEngine.h" #include "llvm/ExecutionEngine/MCJIT.h" #include "llvm/IRReader/IRReader.h" #include "llvm/Support/TargetSelect.h" #include

Hi llvmdev, I've noticed that there is no unary operator in LLVM. For unary operator such as Neg or Or operator, the IR builder just creates a binary operation with one dummy operand, 01823 <http://llvm.org/doxygen/classllvm_1_1BinaryOperator.html#a073c092ce74a122e898e435e60e84599> BinaryOperator <http://llvm.org/doxygen/classllvm_1_1BinaryOperator.html>

I'm trying to create a GlobalVariable(that is a ConstantArray) in its own section. I want each element to be a pointer to a global thats already in the program(a variable or function). The follow code makes sense to me and compiles fine, but gives me the wrong output. When I look at the section in the ELF file it is larger than I expected and appears to be wrong. The contents of the array do

Contents of section my_section: 400890 c3666666 6666662e 0f1f8400 00000000 .ffffff......... 4008a0 38106000 00000000 b0064000 00000000 8.`....... at ..... 4008b0 d0064000 00000000 0f1f8400 00000000 .. at ............. 4008c0 38106000 00000000 d0064000 00000000 8.`....... at ..... 4008d0 30074000 00000000 0. at ..... This seems too big and doesn't make sense

Hi all, I am new to LLVM, and I am learning how to use LLVM for profiling. I need to pass an array to an external method, and insert a call instruction to the method in the code. After reading a few source files, I've tried using GetElementPtrInst to pass an array, but it fails at llvm::GetElementPtrInst::hasAllZeroIndices() const + 0 std::vector<Value*> Args(1);

Thank you Ahmad, I figured out that, although the type of both p(oInst) and p(nInst) were the same, I had to: for (unsigned int i = 0; i < callOInst->getNumArgOperands(); i++) { callOInst->getArgOperand(i)->mutateType(callNInst->getArgOperand(i)->getType()); } that solves the issue at the calling instruction in the main function, but now I see that *linkModules* does not work

Hi Keir: I am sorry trouble you again. I want to emulate instruction "push %ebp" in Xen. I found the function emulate_privilege_op does not satisfy this requirement. Then I resort to x86_emulate. I construct the x86_emulate_ctxt and reuse the "ptwr_emulate_ops". code like this: extern const struct x86_emulate_ops ptwr_emulate_ops; in do_general_protection { .... struct

Dear Mentors, Please help me to understand our plan to implement Interprocedural Register allocator by propogating register usage info. While writing this mail I am considering all previous discussion over llvm-dev and IRC. 1) A MachineFunction pass to be executed POST-RA to collect the information about the used Registers. 2) An Immutable pass which will store reg usage info collected by