RFR: 8293980: Resolve CONSTANT_FieldRef at CDS dump time
Ioi Lam
iklam at openjdk.org
Wed May 22 21:53:28 UTC 2024
This PR tries store CONSTANT_FieldRef entries in the resolved state whenever it's safe to do so.
I.e., when a constant pool entry in class `A` refers to a *non-static* field `B.F`,
- `B` must be the same class as `A`; or
- `B` is a supertype of `A`; or
- `B` is one of the [vmClasses](https://github.com/openjdk/jdk/blob/3d4185a9ce482cc655a4c67f39cb2682b02ae4fe/src/hotspot/share/classfile/vmClasses.hpp), and `A` is loaded by the boot class loader.
Under these conditions, it's guaranteed that whenever `A` tries to use this entry at run time, `B` is guaranteed to have already been resolved in A's system dictionary, to the same value as resolved during dump time.
Therefore, we can safely archive the `ResolvedFieldEntry` in class `A` that refers to `B.F`.
Note that this
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Commit messages:
- 8293980: Resolve CONSTANT_FieldRef at CDS dump time
Changes: https://git.openjdk.org/jdk/pull/19355/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19355&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8293980
Stats: 1134 lines in 30 files changed: 969 ins; 57 del; 108 mod
Patch: https://git.openjdk.org/jdk/pull/19355.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/19355/head:pull/19355
PR: https://git.openjdk.org/jdk/pull/19355
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