[9] RFR (XS) 8059139: It should be possible to explicitly disable usage of TZCNT instr w/ -XX:-UseBMI1Instructions

Vladimir Kozlov vladimir.kozlov at oracle.com
Fri Oct 10 22:14:44 UTC 2014


Before JDK-8055494 it was possible to disable usage of all BMI1-related 
instructions by passing -XX:-UseBMI1Instructions to JVM, but fix for 
JDK-8055494 made it impossible to disable usage of TZCNT.

Disable TZCNT with -XX:-UseBMI1Instructions flag specified on command line.

Testing jtreg,jprt

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