Hello, I'm currently porting our software to the x86-64 (windows) platform. Since we're using LLVM for dynamic code generation it's not just a matter of fixing the compilation problems but also re-targeting the x86 backend to use 64 bit pointers everywhere. I'm not familiar with the x86-64 instruction set, so I really have no idea how much work this will be. My question is really if anyone is already working on this, perhaps on a 64-bit Linux? I've already done most of the work involved in getting LLVM itself to run on 64-bit windows, but of course that doesn't help much as long as the emitted code is 32-bit...
On Thu, 19 Jan 2006, Morten Ofstad wrote:> Hello, I'm currently porting our software to the x86-64 (windows) > platform. I've already done most of the work involved in getting LLVM > itself to run on 64-bit windows, but of course that doesn't help much as > long as the emitted code is 32-bit...My understanding is that LLVM builds fine on AMD64 machines running Linux, and we'd obviously be happy to merge in changes you made to make it work well on Win64.> Since we're using LLVM for dynamic code generation it's not just a matter of > fixing the compilation problems but also re-targeting the x86 backend to use > 64 bit pointers everywhere. I'm not familiar with the x86-64 instruction set, > so I really have no idea how much work this will be. My question is really if > anyone is already working on this, perhaps on a 64-bit Linux?Unfortunately, there is no work (that I'm aware of) to add 64-bit X86 support yet. The plans I'm aware of to add this will start in 4-5 months. If you were already familiar with the architecture and the LLVM code generator, I would guess it could be done in 3-4 weeks without a problem. If not on both counts, it might take a few more months. -Chris -- http://nondot.org/sabre/ http://llvm.org/
Chris Lattner wrote:> On Thu, 19 Jan 2006, Morten Ofstad wrote: >> Hello, I'm currently porting our software to the x86-64 (windows) >> platform. I've already done most of the work involved in getting LLVM >> itself to run on 64-bit windows, but of course that doesn't help much >> as long as the emitted code is 32-bit... > > My understanding is that LLVM builds fine on AMD64 machines running > Linux, and we'd obviously be happy to merge in changes you made to make > it work well on Win64.I have new project files for VS2005 and several patches to the X86 target (to get it to compile at all) and to the System/* files for windows. Unfortunately, all this is based on the 1.5 release of LLVM that is used in our software - I'll probably upgrade to the latest release in a few weeks, but I don't want to keep tracking the development version. I don't think it will be too much of a problem, though - as the files I've patch don't seem to change very often. I will submit my patches once I've had time to bring them up to date with the development version.>> Since we're using LLVM for dynamic code generation it's not just a >> matter of fixing the compilation problems but also re-targeting the >> x86 backend to use 64 bit pointers everywhere. I'm not familiar with >> the x86-64 instruction set, so I really have no idea how much work >> this will be. My question is really if anyone is already working on >> this, perhaps on a 64-bit Linux? > > Unfortunately, there is no work (that I'm aware of) to add 64-bit X86 > support yet. The plans I'm aware of to add this will start in 4-5 > months. If you were already familiar with the architecture and the LLVM > code generator, I would guess it could be done in 3-4 weeks without a > problem. If not on both counts, it might take a few more months.Ok, I will have to wait then. m.