[9] RFR(S): 8139377: JVM can't be started w/ -XX:+EnableJVMCI -XX:+UseJVMCICompiler and default TypeProfileWidth

[Zoltán Majó]

Thank you, Igor and Chris, for the review!

Best regards,


Zoltan


On 10/12/2015 08:00 PM, Christian Thalinger wrote:
> Looks good, thanks.
>
>> On Oct 12, 2015, at 6:16 AM, Zoltán Majó <zoltan.majo at oracle.com> wrote:
>>
>> Hi,
>>
>>
>> please review the following patch for JDK-8139377.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8139377
>>
>> Problem: JDK-8078554 defined a valid range for compiler-related command-line flags. The JVM checks at runtime if the value of each flag is within the range defined for the flag. JEP 243 (Java-Level JVM Compiler Interface) increased the value of TypeProfileWidth to 8 that is outside of the currently defined range for that flag.
>>
>> Solution: Increase the upper bound of TypeProfileWidth to 8. I also tried to increase the value to 16 but that value triggers an assert on one of our supported platforms.
>>
>> Webrev:
>> http://cr.openjdk.java.net/~zmajo/8139377/webrev.00/
>>
>> Testing:
>> - all tests in hotspot/test/runtime/CommandLine on all supported platforms, all tests pass;
>> - JPRT (testset hotspot), all tests pass.
>>
>> Thank you and best regards,
>>
>>
>> Zoltan
>>