Bug ID: JDK-8319185 [Lilliput] Enable and fix vectorization tests

Type: Bug
Component: hotspot
Sub-Component: compiler
Affected Version:
repo-lilliput-17,repo-lilliput-21,repo-lilliput repo-lilliput-17,repo-lilliput-21,repo-lilliput

Priority: P4
Status: Resolved
Resolution: Fixed
OS: generic
CPU: generic

Submitted: 2023-10-31
Updated: 2024-04-22
Resolved: 2024-01-30

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Other
repo-lilliputFixed

When hardcoding UseCompactObjectHeaders as enabled by default (in globals.hpp), some tests are failing:

compiler/c2/irTests/TestVectorizationMismatchedAccess.java
compiler/c2/irTests/TestVectorizationNotRun.java
compiler/loopopts/superword/TestIndependentPacksWithCyclicDependency.java

The pattern in all 3 tests is similar: they fill different types of arrays with test data, and then perform various operations and check the C2 IR whether or not vectorization kicks in. This fails with Lilliput because Lilliput throws off the alignment that those tests are implicitely expecting.

A pull request was submitted for review. URL: https://git.openjdk.org/lilliput/pull/152 Date: 2024-04-22 08:21:17 +0000
22-04-2024
A pull request was submitted for review. URL: https://git.openjdk.org/lilliput/pull/125 Date: 2024-01-23 15:56:08 +0000
23-01-2024
A pull request was submitted for review. URL: https://git.openjdk.org/lilliput/pull/118 Date: 2023-11-21 10:54:01 +0000
21-11-2023
A pull request was submitted for review. URL: https://git.openjdk.org/lilliput/pull/117 Date: 2023-11-21 08:44:32 +0000
21-11-2023