Request for review: JDK-8013041: guarantee(this->is8bit(imm8)) failed: Short forward jump exceeds 8-bit offset

[Jiangli Zhou]

Hi Coleen,

Thanks very much for the quick response. Class data sharing was not the 
trigger, -XX:+TieredCompilation exposes the bug. I also thought tiered 
compilation was enabled by default with c2...

Thanks,
Jiangli

On 04/24/2013 01:35 PM, Coleen Phillimore wrote:
> On 4/24/2013 3:37 PM, Jiangli Zhou wrote:
>> Please review the following fix for JDK-8013041 
>> <https://jbs.oracle.com/bugs/browse/JDK-8013041>. The 'jmpb' using 
>> 8-bit displacement needs to be replaced with 'jmp' with more 
>> instructions now generated between the jump instruction and the target.
>>
>> http://cr.openjdk.java.net/~jiangli/8013041/webrev.00/
>>
>> Thanks,
>>
>> Jiangli
>
> This looks good.  I thought TieredCompilation was the default. So it 
> wasn't class data sharing that provoked the bug?
> thanks,
> Coleen
>

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