RFR: 8355708: Two Float16 IR tests fail after JDK-8345125

Fri May 9 13:22:26 UTC 2025

Two FP16 tests fail due to IR verification failure in JTREG. Increased the warmup time to 10000 to make sure it is being compiled by c2 and the expected IR is being generated.

Testing:
Tested both the testcases with and without these options - `"-ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:-TieredCompilation"` and they pass successfully on aarch64.

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Commit messages:
 - 8355708: Two Float16 IR tests fail after JDK-8345125

Changes: https://git.openjdk.org/jdk/pull/25141/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25141&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8355708
  Stats: 5 lines in 3 files changed: 2 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25141.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25141/head:pull/25141

PR: https://git.openjdk.org/jdk/pull/25141