8329273: C2 SuperWord: Some basic MemorySegment IR tests

[eme64]

I could not find any IR vectorization tests for MemorySegment yet.

I make sure to exercise different backing types:

• arrays
• buffers
• native memory

I filed a follow-up RFE, to eventually make all cases where I have "FAILS" vectorize:

JDK-8331659: C2 SuperWord: investicate failed vectorization in compiler/loopopts/superword/TestMemorySegment.java

---

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Issue

• JDK-8329273: C2 SuperWord: Some basic MemorySegment IR tests (Enhancement - P4)

Reviewers

• Vladimir Kozlov (@vnkozlov - Reviewer) ⚠️ Review applies to 6f760dfd
• Christian Hagedorn (@chhagedorn - Reviewer)

Reviewing

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[openjdk[bot]]

@eme64 This change now passes all automated pre-integration checks.

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8329273: C2 SuperWord: Some basic MemorySegment IR tests

Reviewed-by: kvn, chagedorn

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At the time when this comment was updated there had been 1 new commit pushed to the master branch:

• 3e3f7cf4bddf243fddfeac8cfc1d9b2a1be55043: 8330387: Crash with a different types patterns (primitive vs generic) in instanceof

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Webrevs

• 03: Full - Incremental (b6ddb4b7)
• 02: Full - Incremental (3cbb4664)
• 01: Full - Incremental (6f760dfd)
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⚠️ @eme64 This pull request contains merges that bring in commits not present in the target repository. Since this is not a "merge style" pull request, these changes will be squashed when this pull request in integrated. If this is your intention, then please ignore this message. If you want to preserve the commit structure, you must change the title of this pull request to Merge <project>:<branch> where <project> is the name of another project in the OpenJDK organization (for example Merge jdk:master).

[eme64]

Thanks for the reviews @vnkozlov @chhagedorn ! /integrate

[openjdk[bot]]

Going to push as commit c4867c62c44b48e48845608fe4b29b58749767ad. Since your change was applied there have been 29 commits pushed to the master branch:

• 8032d640c0d34fe507392a1d4faa4ff2005c771d: 8332245: C2: missing record_for_ign() call in GraphKit::must_be_not_null()
• fa043aec425ae1e3086d09492b3fabcfbd3fa779: 8294880: Review running time of jdk/internal/shellsupport/doc/JavadocHelperTest.java
• a5005c87c4d5598eb54e9824105767d833f9660b: 8330814: Cleanups for KeepAliveCache tests
• 1a944478a26a766f5a573a1236b642d8e7b0685c: 8332111: [BACKOUT] A way to align already compiled methods with compiler directives
• 957eb611ce2531a3fcc764813ad1e0776887fdda: 8331429: [JVMCI] Cleanup JVMCIRuntime allocation routines
• 2f10a316ff0c5a4c124b94f6fabb38fb119d2c82: 8302850: Implement C1 clone intrinsic that reuses arraycopy code for primitive arrays
• c642f44bbe1e4cdbc23496a34ddaae30990ce7c0: 8329839: Cleanup ZPhysicalMemoryBacking trace logging
• d04ac14bdbab4187d0be98b8471f90be8a14f649: 8332236: javac crashes with module imports and implicitly declared class
• 4e77cf881d031e5b0320915b3eabd7702e560291: 8330795: C2: assert((uint)type <= T_CONFLICT && _zero_type[type] != nullptr) failed: bad type with -XX:-UseCompressedClassPointers
• 7b4ba7f90ab9ea5e1070c79534c587dad17d1bdd: 8325932: Replace ATTRIBUTE_NORETURN with direct [[noreturn]]
• ... and 19 more: https://git.openjdk.org/jdk/compare/d517d2df451e135583083ed3684d7d3241b36f76...master

Your commit was automatically rebased without conflicts.

[openjdk[bot]]

@eme64 Pushed as commit c4867c62c44b48e48845608fe4b29b58749767ad.

:bulb: You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.