RFR: 8171853: Remove Shark compiler

[Roman Kennke]

Ok, I fixed all the comments you mentioned.

Differential (against webrev.01):
http://cr.openjdk.java.net/~rkennke/8171853/webrev.03.diff/ 
<http://cr.openjdk.java.net/%7Erkennke/8171853/webrev.03.diff/>
Full webrev:
http://cr.openjdk.java.net/~rkennke/8171853/webrev.03/ 
<http://cr.openjdk.java.net/%7Erkennke/8171853/webrev.03/>

Roman

> Just spotted this:
>
> ./hotspot/jtreg/compiler/whitebox/CompilerWhiteBoxTest.java: /** 
> {@code CompLevel::CompLevel_full_optimization} -- C2 or Shark */
>
> David
>
> On 16/10/2017 7:25 AM, David Holmes wrote:
>> On 16/10/2017 7:01 AM, Roman Kennke wrote:
>>> Hi David,
>>>
>>> thanks!
>>>
>>> I'm uploading a 2nd revision of the patch that excludes the 
>>> generated-configure.sh part, and adds a smallish Zero-related fix.
>>>
>>> http://cr.openjdk.java.net/~rkennke/8171853/webrev.01/ 
>>> <http://cr.openjdk.java.net/%7Erkennke/8171853/webrev.01/>
>>
>> Can you point me to the exact change please as I don't want to 
>> re-examine it all. :)
>>
>> I'll pull this in and do a test build run internally.
>>
>> Thanks,
>> David
>>
>>> Thanks, Roman
>>>
>>>
>>>> Hi Roman,
>>>>
>>>> The build changes must be reviewed on build-dev - now cc'd.
>>>>
>>>> Thanks,
>>>> David
>>>>
>>>> On 15/10/2017 8:41 AM, Roman Kennke wrote:
>>>>> The JEP to remove the Shark compiler has received exclusively 
>>>>> positive feedback (JDK-8189173) on zero-dev. So here comes the big 
>>>>> patch to remove it.
>>>>>
>>>>> What I have done:
>>>>>
>>>>> grep -i -R shark src
>>>>> grep -i -R shark make
>>>>> grep -i -R shark doc
>>>>> grep -i -R shark doc
>>>>>
>>>>> and purged any reference to shark. Almost everything was 
>>>>> straightforward.
>>>>>
>>>>> The only things I wasn't really sure of:
>>>>>
>>>>> - in globals.hpp, I re-arranged the KIND_* bits to account for the 
>>>>> gap that removing KIND_SHARK left. I hope that's good?
>>>>> - in relocInfo_zero.hpp I put a ShouldNotCallThis() in 
>>>>> pd_address_in_code(), I am not sure it is the right thing to do. 
>>>>> If not, what *would* be the right thing?
>>>>>
>>>>> Then of course I did:
>>>>>
>>>>> rm -rf src/hotspot/share/shark
>>>>>
>>>>> I also went through the build machinery and removed stuff related 
>>>>> to Shark and LLVM libs.
>>>>>
>>>>> Now the only references in the whole JDK tree to shark is a 'Shark 
>>>>> Bay' in a timezone file, and 'Wireshark' in some tests ;-)
>>>>>
>>>>> I tested by building a regular x86 JVM and running JTREG tests. 
>>>>> All looks fine.
>>>>>
>>>>> - I could not build zero because it seems broken because of the 
>>>>> recent Atomic::* changes
>>>>> - I could not test any of the other arches that seemed to 
>>>>> reference Shark (arm and sparc)
>>>>>
>>>>> Here's the full webrev:
>>>>>
>>>>> http://cr.openjdk.java.net/~rkennke/8171853/webrev.00/ 
>>>>> <http://cr.openjdk.java.net/%7Erkennke/8171853/webrev.00/>
>>>>>
>>>>> Can I get a review on this?
>>>>>
>>>>> Thanks, Roman
>>>>>
>>>