RFR: 8286660: codestrings gtest fails on AArch64: "udf" in padding [v2]

[Aleksey Shipilev]

> On hsdis-enabled AArch64 machine this test fails even with [JDK-8274039](https://bugs.openjdk.java.net/browse/JDK-8274039):
> 
> 
> $ CONF=linux-aarch64-server-fastdebug make run-test TEST=jtreg:gtest/GTestWrapper.java
> 
> [----------] 1 test from codestrings
> [ RUN      ] codestrings.validate_vm

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Accept udf 0 only

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8695/files
  - new: https://git.openjdk.java.net/jdk/pull/8695/files/b6af01d4..33c87181

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8695&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8695&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8695.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8695/head:pull/8695

PR: https://git.openjdk.java.net/jdk/pull/8695