[jdk11u-dev] RFR: 8295469: S390X: Optimized builds are broken

[Aleksey Shipilev]

Fixes S390X optimized builds.

Additional testing:
 - [x] Linux S390X {fastdebug, release, optimized} builds

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Commit messages:
 - Backport 7b2e83b3955c034208325ea5477afd3c5e1da41a

Changes: https://git.openjdk.org/jdk11u-dev/pull/1466/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1466&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295469
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1466.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1466/head:pull/1466

PR: https://git.openjdk.org/jdk11u-dev/pull/1466