TestAlignVectorFuzzer FAILED in Test_openjdk26_hs_sanity.openjdk_riscv64_linux

**Failing Test Info**
Test Name: compiler/loopopts/superword/TestAlignVectorFuzzer.java#CompileOnly
Test Duration: 32 minutes
Machine it fails on: [test-rise-ubuntu2404-riscv64-2](https://ci.adoptium.net/computer/test-rise-ubuntu2404-riscv64-2)
Machines it passes on (if intermittent): (Seems intermittent on all machines, but fails most of the time)

**Jenkins Test Job Info**
Jenkins Test Job Name: Test_openjdk26_hs_sanity.openjdk_riscv64_linux (also jdk25)
Jenkins Test Job URL: https://ci.adoptium.net/job/Test_openjdk26_hs_sanity.openjdk_riscv64_linux_rerun/18/consoleFull
TRSS link for the build (if available):

**Deep History Link from TRSS (if available)**

https://trss.adoptium.net/deepHistory?testId=69722e8e92fc32006c00ec41

** Rerun in Grinder Link (if available) or Steps to Reproduce**

[Rerun link](https://ci.adoptium.net/job/Grinder/parambuild/?SDK_RESOURCE=upstream&TARGET=testList+TESTLIST=hotspot_tier1_compiler_0&BASE_DOCKER_REGISTRY_CREDENTIAL_ID=&TEST_FLAG=&UPSTREAM_TEST_JOB_NAME=&DOCKER_REQUIRED=false&ACTIVE_NODE_TIMEOUT=5&VENDOR_TEST_DIRS=&EXTRA_DOCKER_ARGS=&TKG_OWNER_BRANCH=adoptium%3Amaster&OPENJ9_SYSTEMTEST_OWNER_BRANCH=eclipse%3Amaster&PLATFORM=riscv64_linux&GENERATE_JOBS=true&KEEP_REPORTDIR=true&PERSONAL_BUILD=false&DOCKER_REGISTRY_DIR=&RERUN_ITERATIONS=0&ADOPTOPENJDK_REPO=https%3A%2F%2Fgithub.com%2Fadoptium%2Faqa-tests.git&SETUP_JCK_RUN=false&DOCKER_REGISTRY_URL_CREDENTIAL_ID=&LABEL=&EXTRA_OPTIONS=&CUSTOMIZED_SDK_URL=&BUILD_IDENTIFIER=&JENKINS_KEY=&ADOPTOPENJDK_BRANCH=v1.0.12-release&LIGHT_WEIGHT_CHECKOUT=false&USE_JRE=false&ARTIFACTORY_SERVER=&KEEP_WORKSPACE=false&USER_CREDENTIALS_ID=&JDK_VERSION=26&DOCKER_REGISTRY_URL=&ITERATIONS=1&VENDOR_TEST_REPOS=&JDK_REPO=https%3A%2F%2Fgithub.com%2Fadoptium%2Fjdk&JCK_GIT_BRANCH=master&OPENJ9_BRANCH=master&OPENJ9_SHA=&JCK_GIT_REPO=&VENDOR_TEST_BRANCHES=&UPSTREAM_JOB_NAME=build-scripts%2Fjobs%2Frelease%2Fjobs%2Fjdk26%2Fjdk26-release-linux-riscv64-temurin&OPENJ9_REPO=https%3A%2F%2Fgithub.com%2Feclipse-openj9%2Fopenj9.git&CLOUD_PROVIDER=&CUSTOM_TARGET=&VENDOR_TEST_SHAS=&JDK_BRANCH=jdk-26%2B35_adopt&LABEL_ADDITION=&ARTIFACTORY_REPO=&ARTIFACTORY_ROOT_DIR=&UPSTREAM_TEST_JOB_NUMBER=&DOCKERIMAGE_TAG=&TEST_TIME=&JDK_IMPL=hotspot&SSH_AGENT_CREDENTIAL=&AUTO_DETECT=true&SLACK_CHANNEL=aqavit-bot&DYNAMIC_COMPILE=false&RELATED_NODES=&ADOPTOPENJDK_SYSTEMTEST_OWNER_BRANCH=adoptium%3Amaster&APPLICATION_OPTIONS=&CUSTOMIZED_SDK_URL_CREDENTIAL_ID=eclipse_temurin_bot_email_and_token&ARCHIVE_TEST_RESULTS=false&NUM_MACHINES=&OPENJDK_SHA=&TRSS_URL=&RERUN_FAILURE=false&USE_TESTENV_PROPERTIES=true&BUILD_LIST=openjdk&ADDITIONAL_ARTIFACTS_REQUIRED=&UPSTREAM_JOB_NUMBER=1&STF_OWNER_BRANCH=adoptium%3Amaster&TIME_LIMIT=25&JVM_OPTIONS=&PARALLEL=None)

**Java Version output (from console output)**

```
16:14:07 openjdk version "26" 2026-03-17
16:14:07 OpenJDK Runtime Environment Temurin-26+35 (build 26+35)
16:14:07 OpenJDK 64-Bit Server VM Temurin-26+35 (build 26+35, mixed mode, sharing)
```

**Relevant Console Output (showing exceptions/errors/crashes)**

```
10:45:28 ACTION: main -- Error. '/home/jenkins/workspace/Test_openjdk26_hs_extended.openjdk_riscv64_linux_rerun/jdkbinary/j2sdk-image/bin/java' timed out after 1920000 ms (elapsed time including timeout handling 1921696 ms)
```

**Attach or link to relevant artifacts**

[output.txt](https://github.com/user-attachments/files/25977069/output.txt)

Start with compiler/loopopts/superword/TestAlignVectorFuzzer.java#CompileOnly and reproduce it using the linked Grinder rerun on riscv64_linux. Review output.txt and the Jenkins console timeout, comparing passing and failing runs. Done means the intermittent timeout or failure is explained and the test completes reliably on the affected job.

Written by the indexing model from the issue text.