RFR(S): 8139377: JVM can't be started w/ -XX:+EnableJVMCI -XX:+UseJVMCICompiler and default TypeProfileWidth
zoltan.majo at oracle.com
Tue Oct 13 07:15:22 UTC 2015
Thank you, Igor and Chris, for the review!
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:
>> 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.
>> - 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,
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