URGENT RFR: 8041141: JDK9 emb build failure on PPC platform

[Andrew Haley]

Hi,

On 06/11/2014 06:03 PM, Andrew Hughes wrote:
> 
> I just stumbled across this when trying to work out why we are seeing aliasing
> warnings in the demo code only on PPC builds. They get flagged by our build process.
> This exclusion of fno-strict-aliasing on PPC seems to date back to 7027910 in OpenJDK
> 7, where we are seeing the warnings, and there seems to be no explanation as to why
> it was added in either the code or reviews.
> 
> Given -fno-strict-aliasing is now being used on all architectures in 9, do you think
> it's ok to do the same in 7? I could also turn it off on the individual files, but
> this would duplicate the flag on other architectures and we may then get more PPC-only
> warnings in future.

Never mind the warnings, -fno-strict-aliasing is essential for correctness.

Andrew.