[PATCH] D23097: RegScavenging: Add scavengeRegisterBackwards()

[Matthias Braun via llvm-commits]

Hi,

thanks for asking. Yes this is not solved yet :-(

After Ulrichs remarks I found some errors in the changes and realized that most targets don't care when the emergency spilling code is faulty as that nearly never happens, ppc seems to be the only one where emergency spilling in the scavenger happens regularily.
A fixed version passed all the lit tests and the test-suite but failed on clang stage2 bots. So I am at a hard to debug problem again. I plan to develop a more complete set of unit tests for this when I get back to this.

I did sent a request to get gcc compilefarm access months ago but didn't get any responses. Is there any alternative to this?

- Matthias

> On Aug 31, 2016, at 10:03 AM, Kit Barton <kbarton at ca.ibm.com> wrote:
> 
> kbarton added a comment.
> 
> Do you still have problems on PPC? 
> Did you get access to a Power system so you can debug?
> 
> 
> Repository:
>  rL LLVM
> 
> https://reviews.llvm.org/D23097
> 
> 
>