RFR: 8368518: [s390x] test failure with failed: wrong size of mach node [v2]

[Amit Kumar]

> Fixes the test failures. Tested tier1 with release and fastdebug vm. 
> 
> Moves one comment related to INTPRESSURE, a leftover from previous change.

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  Update src/hotspot/share/runtime/flags/jvmFlagConstraintsCompiler.cpp
  
  Co-authored-by: Dean Long <17332032+dean-long at users.noreply.github.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27465/files
  - new: https://git.openjdk.org/jdk/pull/27465/files/866f3f75..6f440382

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27465&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27465&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27465.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27465/head:pull/27465

PR: https://git.openjdk.org/jdk/pull/27465