Hi Ian, On Apr 9, 2007, at 12:21 PM, Ian Lynagh wrote:
With this patch, we are pretty close. However, there still seems to be something wrong with the splitter. I can make a working registerized compiler if I set splitObjs=NO in build.mk, but it seems as if whatever is wrong with ghc-split shouldn't be too hard to fix.
I've glanced at ghc-split.lprl, but on what files is it invoked? Can I run it from the command line on a file and see check what comes out?
If you compile a module with
ghc -v -keep-tmp-files
then you should see the commandline it is using, and it should leave the files for you to examine, and rerun the commands on, afterwards.
I did this and immediately discovered that the problem is not with ghc-split but with ghc-asm. ".globl" directives are being deleted when they shouldn't be. This is somewhat reminiscent of bug #1167, except that it seems to happen far more frequently on amd64. Perhaps someone has an idea of the top of their head for this one. I wouldn't be surprised if the fix for this also took care of the bug on the less loved linux-ppc platform. Best Wishes. Greg