[9] RFR(M) 8166416: [AOT] Integrate JDK build changes and launcher 'jaotc' for AOT compiler

[Christian Thalinger]

> On Oct 27, 2016, at 2:40 AM, Erik Joelsson <erik.joelsson at oracle.com> wrote:
> 
> 
> 
> On 2016-10-27 02:45, Vladimir Kozlov wrote:
>> AOT JEP:
>> https://bugs.openjdk.java.net/browse/JDK-8166089
>> Subtask:
>> https://bugs.openjdk.java.net/browse/JDK-8166416
>> Webrev:
>> http://cr.openjdk.java.net/~kvn/aot/top.webrev/
> hotspot.m4: 296: Comment is misleading. Should just be removed.
> 
> CompileJavaModules.gmk: Use of -g flag for java compilation is controlled globally. Please remove.

There is a reason for that.  Some debugging related Graal code makes use of classfile information to provide better information.  Since this is Java and not C++ it *is* possible to have pleasant debugging experience even in product builds.  I want this to be there.

> 
> Main.gmk: buildtools-hotspot should be declared inside the CREATING_BUILDJDK conditional like all other buildtools targets.
> 
>> http://cr.openjdk.java.net/~kvn/aot/jdk.webrev/
> The extra exports from java.base needs to go in a new jdk/src/java.base/share/classes/module-info.java.extra since the module jdk.vm.compiler is optional.
>> http://cr.openjdk.java.net/~kvn/aot/hs.make.webrev/
> Lib-jdk.aot.gmk: Please inline LDFLAGS and LIBS and add $(LIBS_JDKLIB) to LIBS since that will provide -lc on Solaris automatically. No need to set DEBUG_SYMBOLS or STRIP_SYMBOLS as the defaults should be correct and controlled globally.
> 
> /Erik
>> 
>> Please, review build changes for AOT.  Only Linux/x64 platform is supported. 'jaotc' and AOT part of Hotspot will be build only on Linux/x64.
>> 
>> Changes include new 'jaotc' launcher, makefile changes to build jdk.vm.compiler (Graal) and jdk.aot modules used by 'jaotc'.
>> Both modules sources are located in Hotspot: hotspot/src/jdk.aot and hotspot/src/jdk.vm.compiler.
>> 'jaotc' requires installed libelf package on a system to build native part of 'jaotc'. It is used to generated AOT shared libraries (.so) as result of AOT compilation.
>> 
>> Hotspot makefile changes will be pushed together with Hotspot AOT changes.
>> 
>> Thanks,
>> Vladimir
>