RFR: 8297729: Replace GrowableArray in ComputeMoveOrder with hash table [v3]
Jorn Vernee
jvernee at openjdk.org
Mon Dec 5 15:41:33 UTC 2022
> Replaces the GrowableArray 'table' in ComputeMoveOrder with a real hash table.
>
> Through testing, I found that sometimes this array is blown up to several thousand elements, most of which are `NULL`. Using a hash table prevents this large wastage.
>
> I've touched up some of the surrounding code as well. Mostly style changes, but I've also removed the `BasicType` field from the `Move` and `MoveOperation` structs, since it was unused, and added frame data storages to the fast path for stack args as well, since both are allocated on the stack.
>
> Testing: `jdk_foreign` test suite.
Jorn Vernee has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains three commits:
- Drop redundant friend decl
- improve hash slightly
- Use hashtable in ComputeMoveOrder + general cleanup
-------------
Changes: https://git.openjdk.org/jdk/pull/11392/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11392&range=02
Stats: 61 lines in 2 files changed: 20 ins; 10 del; 31 mod
Patch: https://git.openjdk.org/jdk/pull/11392.diff
Fetch: git fetch https://git.openjdk.org/jdk pull/11392/head:pull/11392
PR: https://git.openjdk.org/jdk/pull/11392
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