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Hello everybody, I'm curious whether there have been any attempts to perform performance analysis on the LLVA level. I am interested in the derivation of flow-facts (loop bounds etc. - what about the value-range-propagation pass I read about on this list some time ago) but even more I am interested in exec-time modeling (how long does it take to execute a bunch of LLVA instructions on

...e ago) > but even more I am interested in exec-time modeling (how long does it > take to execute a bunch of LLVA instructions on particular processor) > for the LLVA. I am glad about every pointer I can get. If you are asking about LLVA not LLVM, see http://llvm.org/pubs/2006-06-18-WIOSCA-LLVAOS.html LLVA specifically is refering to a research project offshoot of llvm. LLVM instructions do not have 1:1 mappings to native instructions (sometimes multiple llvm instructions map to fewer native insts, sometimes the other way around). Andrew

I posted this question on the llvm channel on irc. I am new to all of this. And I only found out about LLVA as a result of the irc. And please forgive my erroneous terminology. So let me try this as best I can. I want to know if the code of LLVA/LLVM can be used as a virtual processor in configuring the linux kernel? Maybe you have already encountered this and possibly accomplished it as

Hi, I have been away from the list for a while, so do apologize in advance if the topic is slightly off topic here. I have started a hobby project to create a virtual OS library (jos). The idea was to create a set of C API's for operating system specific tasks i.e. File IO, threading and etc. For example: typedef jos_handle jos_thread; jos_thread jos_thread_create(...); void

Hi, I ran into a problem when running DSA on Linux kernel (the Kernel version I used is 2.4.31). The analysis was aborted when it tried to do DSNode::mergeTypeInfo on some data structure in the kernel. I have filed a bug report at http://llvm.org/bugs/show_bug.cgi?id=1656. My question is what version of Linux kernel LLVM has been tested on successfully? To run DSA analysis, should I use the

...ore I am interested in exec-time modeling (how long does it >> take to execute a bunch of LLVA instructions on particular processor) >> for the LLVA. I am glad about every pointer I can get. > > If you are asking about LLVA not LLVM, see > http://llvm.org/pubs/2006-06-18-WIOSCA-LLVAOS.html > > LLVA specifically is refering to a research project offshoot of llvm. > LLVM instructions do not have 1:1 mappings to native instructions > (sometimes multiple llvm instructions map to fewer native insts, > sometimes the other way around). That's correct, and furthermo...

I managed to compile newlib with llvm-gcc yesterday. That is, the machine independent part is now basically done, and the syscall part contains no-op stubs provided by libgloss. I haven't tested the port yet, but since newlib has already been ported to many architectures, I would be pretty surprised if there were any major problems. A couple of things I noticed when configuring newlib for