[jdk8u-dev] RFR: 8059847: complement JDK-8055286 and JDK-8056964 changes

[ktakakuri]

Hi all,

This is a backport of JDK-8059847: complement JDK-8055286 and JDK-8056964 changes

JDK-8055286 and JDK-8056964 are already backported to JDK8, but this patch is not. For this reason, CompileCommand=option does not support flags of type double, as reported. So this patch should be applied.

The original patch is applied cleanly.

Testing: hotspot_tier1 including the test which come with this patch.

Thank you.

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Commit messages:
 - Backport e210688db98357ab66718958d75b9970d4750fd2

Changes: https://git.openjdk.org/jdk8u-dev/pull/396/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=396&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8059847
  Stats: 251 lines in 4 files changed: 247 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/396.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/396/head:pull/396

PR: https://git.openjdk.org/jdk8u-dev/pull/396