JDK-8043137 : Collapse long sequences of NOP in Nashorn bytecode output
- Type: Enhancement
- Component: core-libs
- Sub-Component: jdk.nashorn
- Affected Version: 9
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2014-05-14
- Updated: 2015-01-21
- Resolved: 2014-05-14
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| JDK 8 | JDK 9 |
|---|---|
8u40Fixed  |
9 b17Fixed |
Description
Due to the way our codegen works, we must emit a bunch of unreachable code in our continuation methods. ASM replaces them with long stretches of NOP, NOP, ... ATHROW. They take up a lot of space in the print output of --print-code switch. They should be replaced with an ellipse, e.g.
17 nop
18 nop
19 nop
20 nop
21 nop
22 nop
23 athrow
becomes:
17 nop
...
23 athrow