RFR(S): 8026694: New type profiling points break compilation replay

[Roland Westrelin]

Vladimir,

> Can you look on compiler/ciReplay/TestSA.sh failure? Is it because of additional metadata?  Will this your change fix it? Do you need to update SA too?

You’re right that I need to update the SA as well. I’ll see if it fixes the test failure.

Roland.

> 
> I got next running latest promoted jdk9 fastdebug VM with Tiered off:
> 
> WARNING: replay.txt from SA != replay.txt from VM:
> 
> < # ciMetadata0 @ sun.jvm.hotspot.oops.TypeArrayKlass at 0x0000000100000030
> < # Unknown ci type 0xfffffd7ed7ecc5a0
> ...
> < # ciMetadata98 @ sun.jvm.hotspot.oops.Method at 0xfffffd7ffccf9da0
> 504a396,403
> > ciMethodData java/lang/invoke/MethodHandle <clinit> ()V 1 0 orig 304 104 155 245 215 126 253 255 255 0 0 0 0 0 0 0 0 240 46 198 252 127 253 255 255 208 2 0 0
> 
> And:
> 
> Exception in thread "main" java.lang.InternalError: missing reason for 17
>        at sun.jvm.hotspot.oops.MethodData.initialize(MethodData.java:185)
>        at sun.jvm.hotspot.oops.MethodData.access$000(MethodData.java:36)
>        at sun.jvm.hotspot.oops.MethodData$1.update(MethodData.java:126)
>        at sun.jvm.hotspot.runtime.VM.registerVMInitializedObserver(VM.java:394)
>        at sun.jvm.hotspot.oops.MethodData.<clinit>(MethodData.java:124)
> 
> thanks,
> Vladimir
> 
> On 4/15/14 11:50 AM, Vladimir Kozlov wrote:
>> On 4/15/14 11:21 AM, Roland Westrelin wrote:
>>>>>>>> http://cr.openjdk.java.net/~roland/8026694/webrev.00/
>>>>>>>> 
>>>>>>>> If we want to still be able to read replay files generated before
>>>>>>>> this change, the assert:
>>>>>>>> 
>>>>>>>> src/share/vm/ci/ciReplay.cpp
>>>>>>>> 1120       assert(m->_data_size + m->_extra_data_size ==
>>>>>>>> rec->_data_length * (int)sizeof(rec->_data[0]), "must agree”);
>>>>>>>> 
>>>>>>>> needs to removed or changed (extra data from the MDO is not
>>>>>>>> currently dumped).
>>>>>> 
>>>>>> Are you asking what to do with the assert? Can you detect if replay
>>>>>> file has extra data?
>>>>> 
>>>>> I can change the assert to:
>>>>> 
>>>>>       assert(m->_data_size + m->_extra_data_size ==
>>>>> rec->_data_length * (int)sizeof(rec->_data[0]) ||
>>>>>              m->_data_size == rec->_data_length *
>>>>> (int)sizeof(rec->_data[0]), "must agree”);
>>>>> 
>>>>> and then it covers both cases. There’s no real need to detect
>>>>> whether the replay file has extra data.
>>>> 
>>>> Agree.
>>> 
>>> Thanks Vladimir. Can I consider this reviewed?
>> 
>> Yes.
>> 
>> Vladimir
>> 
>>> 
>>> Roland.
>>>