[jdk17u-dev] RFR: 8320209: VectorMaskGen clobbers rflags on x86_64

[Sandhya Viswanathan]

8320209: VectorMaskGen clobbers rflags on x86_64

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

Commit messages:
 - Backport b05e69f789fa8c9a5320be5a841317abd3b3a235

Changes: https://git.openjdk.org/jdk17u-dev/pull/1969/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1969&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320209
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1969.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1969/head:pull/1969

PR: https://git.openjdk.org/jdk17u-dev/pull/1969