RFR: 8047734 : Back out use of -Og

[Igor Veresov]

Hi Mike,

Thanks for fixing this. Your diff against hs-comp is going to be a bit different though. We already have changes that remove Og for clang (which doesn’t support -Og at all). See http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/8cfc6ff87733

igor

On Jul 8, 2014, at 3:33 PM, Mike Duigou <mike.duigou at oracle.com> wrote:

> Hello all;
> 
> This change backs out use of the optimized for debugging "-Og" in favour of the traditional "-O0". Initial evaluation seemed to indicate that "-Og" provided all the necessary debugging information but this has turned out to be incorrect. It seems that information is missing with the "-Og" optimization option combined with the default "-g" symbols option. More investigation is needed but that will be done in a future changeset.
> 
> jbsbug: https://bugs.openjdk.java.net/browse/JDK-8047734
> webrev: http://cr.openjdk.java.net/~mduigou/JDK-8047734/0/webrev/
> 
> (diffs in the generated configure script are not part of this review)
> 
> The changes will be pushed through the hotspot-compiler repo.
> 
> Mike