JDK-8164451 : Generate all zero and identity forms at link time
  • Type: Sub-task
  • Component: core-libs
  • Sub-Component: java.lang.invoke
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2016-08-19
  • Updated: 2016-08-25
  • Resolved: 2016-08-19
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JDK 9
9 b133Fixed
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Description
Adding exhaustive generation of all zero and identity forms can trivially be added with the framework put in place by JDK-8164044

This removes generation of these admittedly trivial shapes, but measurement show this is still a tiny net improvement that helps towards the goal of JDK-8086045
Comments
Zero forms are improperly generated with CONSTANT_PLACEHOLDER's rather than bytecode to return the appropriate zero (iconst_0+ireturn etc) and had to be backed out
20-08-2016