search for: addpassestojitcompil

I wonder in what cases FunctionPass is better that Pass. For example, addPassesToEmitAssembly takes PassManger and addPassesToJITCompile takes FunctionPassManager. Another question is about FunctionPassManager::run(Function&) and FunctionPass(Function&). The former calls the later, which is fine, but the latter looks like this: bool FunctionPass::run(Function &F) { if (F.isExternal()) return false;// Passes are n...

On Thu, 24 Jun 2004, Vladimir Prus wrote: > I wonder in what cases FunctionPass is better that Pass. For example, > addPassesToEmitAssembly takes PassManger and addPassesToJITCompile takes > FunctionPassManager. Here's a simple way to look at it. Use a Function pass whenever you can. A function pass will always work where a Pass works (it derives from pass as you've noticed), but not the other way around. In particular, there are *strict* rules that must be follo...

I am looking for a list of the various optimizations that llvm performs when I use the JIT execution engine. Eg. I am assuming: strench reduction, dead code elimination ? Simon.

Hi all, I am trying to write a pass for the llc tool. I register this pass with the RegisterLLC template. However, when I try to run llc and load up the pass, I get a failed assertion: $ /storage/anshuman/llvmCVS/llvm/tools/Debug/llc -load=./libTest.so --help ... ... llc: Pass.cpp:327: void llvm::RegisterPassBase::unregisterPass(llvm::PassInfo*): Assertion `I != PassInfoMap->end()

...han welcome to do so. > I have looked over the JIT documentation (which is a bit sparse) and > the examples. So far I am completely unclear as to what the JIT > compiler actually does with the code that is passed to it. A target runs the passes listed in the method <target>JITInfo::addPassesToJITCompile() to emit machine code. > To be more precise, does the JIT perform all of the standard llvm > optimizations on the code, or does it depend on it's client to do so > himself? Are there some examples of that? No, the JIT performs no optimizations. The method I mentioned above just lo...

Hi List, I am in the preliminary stages of adding a JIT compiler to a sizable Scheme system (PLT Scheme). The original plan was to use GNU Lightning, but 1) it seems to be dead, and 2) LLVM has already done a huge amount of stuff that I would have had to write (poorly) from scratch. At the moment, LLVM seems to be the ideal choice for implementing the Scheme JIT, but there are problems that need