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This page describes the command line for the experimental Java compiler, the Java launcher and HotSpot JVM for the support of L-World LW2 Inline Types in the Valhalla project.
L-World Value Types flags:
Flag | Description | |
|---|---|---|
| hotspot | ||
| -XX:EnableValhalla | Boolean value, default value is `true` If true enable support for L-World |
| inline types. | ||
| -XX:ValueArrayElemMaxFlatSize | Integer value, default is -1 Max size for flattening an array of |
| inline types, < 0 means no limit, 0 = disable | ||
| -XX:ValueArrayElemMaxFlatOops | Integer value, default is 4 Max number of embedded object references in |
| inline type to flatten in an array, < 0 means no limit | ||
| -XX:ValueArrayAtomicAccess | Boolean value, default value is `false` Enable atomic access to |
| inlines in an array, by treating |
| inline types as references. | ||
| -XX:EnableValhallaC1 | Boolean value, default "false" If true enable experimental C1 support of inline type |
Integer value, default is "3"
0 = regular acmp (i.e. ptr compare only)
1 = always false for value, perturbation scheme
2 = always false for value
3 = substitutability test| java | ||
| javac | ||
| -XDallowWithFieldOperator | Allow experimental direct use of the withfield bytecode via "__WithField(<field ref>, <value>)" synatx |
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