[cfe-commits] Update Cortex-A9 buildslaves

[陳韋任 (Wei-Ren Chen)]

On Thu, Sep 27, 2012 at 05:45:14PM +0100, David Tweed wrote:
> OK, some investigation results from the always invigorating world of ABI
> configuration issues:
> 
> If you are producing an armv7l-unknown-linux-gnueabihf target then you NEED
> TO DEFINITELY NOT USE --abi=aapcs to avoid some FileCheck problems.
> However, if you are producing an armv7l-unknown-linux-gnueabi target then
> you NEED --abi=aapcs to avoid some problems.
> 
> On a recent/future ubuntu ARM based system, it's correct to specify
> armv7l-unknown-linux-gnueabihf and so we should use that and drop the
> --abi=aapcs entry. (It's still an open question whether in other
> circumstances plain gnueabi remains an interesting target that ought to be
> tested, but on stock ubuntu gnueabihf is the way to go.) If I do that on my
> pandaboard I both get rid of some of the existing failures and I don't
> create any new ones. I've also tested clang and it produces runnable
> executables. So I think this change is what ought to be there.
> 
> Could I ask you to try that configuration options on your buildslaves and
> see if that reproduces what I see? Once it's clear this is ok I'll try to do
> a formal patch to the ARM installation notes in LLVM.

  Free feel to write it down on [1]. ;)
  
> (I don't think aapcs causes "real-life" problems, it just changes function
> signatures which FileCheck regexps doesn't understand.)

Regards,
chenwj

[1] http://llvm.org/docs/HowToBuildOnARM.html#how-to-build-on-arm

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj