LLVM/Clang on Sparc64

Project Infrastructure LLVM Dev List Archives
1

Thanks to Jakob's work on Sparcv9 ABI in Clang and recent changes to
Sparc code generator, I am happy to announce that Clang can self host
itself on Linux/Sparc64 and on FreeBSD/Sparc64.

However, it still fails on a few unit tests and nightly tests,
primarily due to misaligned memory accesses in the code (See bugs
18482, 18500, 18502, 18536, 18693). Unlike other architectures,
misaligned loads/stores cause bus errors in Sparc.

To catch bugs specific to Sparc such as the misalignment bugs, it
would be great to get some buildbots running on Sparc machines. I see
that there are buildbot slaves already running on Sparc machines in
GCC compile farm (for example, gcc63, gcc64, listed at
http://lab.llvm.org:8011/buildslaves). Is it possible to start running
builders on them? If so, what are the procedures to do that?

Note that clang still does not work when it is build as a 32-bit
binary, mainly due to the alignment issues in Clang. Also, Clang does
not work out of box on Solaris/Sparc yet, due to the lack of support
for its toolchain.

Thanks,
Venkatraman

2

That's really cool! Should we add note to Release Notes?

3

That's really cool! Should we add note to Release Notes?

Definitely. I will add a note mentioning about this in ReleaseNotes.rst.

4

That's really cool! Should we add note to Release Notes?

Definitely. I will add a note mentioning about this in ReleaseNotes.rst.

Yes! Thank you. :slight_smile: And congrats!!

-bw

5

That's really cool! Should we add note to Release Notes?

Definitely. I will add a note mentioning about this in ReleaseNotes.rst.

Yes! Thank you. :slight_smile: And congrats!!

Committed as r200699.

6

Thanks to Jakob's work on Sparcv9 ABI in Clang and recent changes to
Sparc code generator, I am happy to announce that Clang can self host
itself on Linux/Sparc64 and on FreeBSD/Sparc64.

However, it still fails on a few unit tests and nightly tests,
primarily due to misaligned memory accesses in the code (See bugs
18482, 18500, 18502, 18536, 18693). Unlike other architectures,
misaligned loads/stores cause bus errors in Sparc.

To catch bugs specific to Sparc such as the misalignment bugs, it
would be great to get some buildbots running on Sparc machines. I see
that there are buildbot slaves already running on Sparc machines in
GCC compile farm (for example, gcc63, gcc64, listed at
http://lab.llvm.org:8011/buildslaves). Is it possible to start running
builders on them? If so, what are the procedures to do that?

You'll probably want to ask the owners and submit a patch (perhaps you can
ask the owners by way of a code review of the patch) for the zorg
repository where the buildbot configurations are kept. Once submitted,
email Galina to have the buildmaster updated.