Great work! OK added some comments to $5824. Will try to take a look at the fence stuff soon.
Cheers, David On 29 January 2012 09:21, Ben Gamari <[email protected]> wrote: > Yesterday I finally had a large block of time to devote to the ARM > linker. While I spent a large fraction of the day tracking down an > unrelated bug (ticket #5824, David, your feedback would be greatly > appreciated here), the linker is looking quite good, > > $ inplace/lib/ghc-stage2 -B/opt/ghc/ghc/ghc/inplace/lib --interactive +RTS > -N1 > GHCi, version 7.4.0.20120126: http://www.haskell.org/ghc/ :? for help > Loading package ghc-prim ... linking ... done. > Loading package integer-gmp ... linking ... done. > Loading package base ... linking ... done. > Prelude> print "hello world!" > "hello world!" > Prelude> import System.IO > Prelude System.IO> writeFile "asdf" "Hello World" > Prelude System.IO> > Leaving GHCi. > > Quite exciting! I've pushed the latest state of my tree to Github > (http://www.github.com/bgamari/ghc/arm-ghci-7.4). As you might infer > from the URL, I'm now working on top of the ghc-7.4 branch. I just got > things working a few minutes ago, so the code isn't too well tested, but > must be pretty close to correct to get as far as it does. The code needs > to be cleaned up (whitespace fixed, debug output removed) and there is > still an instruction decoding issue that I need to figure out, but I'd > say things are looking pretty good. > > I've been testing against a very recent LLVM commit (git > 7750ff1e3cbb87e68f406e6fa7c43a80a61a0ccb, svn commit 149182) which fails > fewer tests than the 3.0 release and seems to emit reasonable code. > While you're looking at patches, have a look at ticket #5814 which adds > support for LLVM's "fence" instruction, added in the 3.0 release. The > patch appears to work but I'm unsure of the exact syncronization > requirements imposed by the Cmm barrier primitive. Also, I currently > always emit "fence", where we should revert to using the > "llvm.memory.barrier" intrinsic used <3.0. > > I'd appreciate any comments on any of the above. > > Cheers, > > - Ben _______________________________________________ Cvs-ghc mailing list [email protected] http://www.haskell.org/mailman/listinfo/cvs-ghc
