RFR (XS) 8139086: Solaris/Sparc slowdebug build fails for memset_with_concurrent_readers.cpp

[Daniel D. Daugherty]

On 10/8/15 6:31 AM, Mikael Gerdin wrote:
> Hi all,
>
> We recently discovered that slowdebug builds fail on Solaris/SPARC due 
> to an issue with inline assembly in 
> memset_with_concurrent_readers_sparc.cpp
>
> After discussions with the C++ compiler team at Oracle it was pointed 
> out to us that the code was incorrect in that it had too few %'s.
>
> Actual registers referenced by name must be escaped with %% but it 
> appears that enabling optimization in the Studio compiler disregards 
> that requirement.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8139086
> Webrev: http://cr.openjdk.java.net/~mgerdin/8139086/webrev/

src/cpu/sparc/vm/memset_with_concurrent_readers_sparc.cpp
     No comments.

I did a quick audit in the above file and didn't see any other
SPARC register usage that wasn't properly escaped. However, I'm
getting rusty with SPARC assembly so someone else with more
recent Task Relevant Experience (TRE) should sanity check this
also...

Thumbs up.

Dan


>
> Testing: Building product|fastdebug|slowdebug on Solaris/SPARC.
>
> Thanks
> /Mikael