[jdk8u-dev] RFR: 8150669: C1 intrinsic for Class.isPrimitive [v2]

[Dongbo He]

> Hi, 
> 
> Please review this backport. The original purpose is to backport fix for [JDK-8239477](https://bugs.openjdk.java.net/browse/JDK-8239477). But this depends on fix for [JDK-8150669](https://bugs.openjdk.java.net/browse/JDK-8150669) & [JDK-8233019](https://bugs.openjdk.java.net/browse/JDK-8233019).
> 
> Performed full jtreg test both on x86_64-linux-gnu and aarch64-linux-gnu platforms. 
> 
> This PR has been reviewed by Paul and approved before move to github: https://mail.openjdk.java.net/pipermail/jdk8u-dev/2021-August/014155.html
> 
> Follow-up fix [JDK-8233019](https://bugs.openjdk.java.net/browse/JDK-8233019) is planned to be backported as well.
> 
> (I made this PR on behalf of fyang)
> 
> Thanks,
> hedongbo

Dongbo He has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into 8150669
 - Backport 890f94d7e6be731ac2ebae2f1ad3cc20ec836115

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

Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/37/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/37/files/3418e09e..c14c86c2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=37&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=37&range=00-01

  Stats: 5719 lines in 124 files changed: 3959 ins; 856 del; 904 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/37.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev pull/37/head:pull/37

PR: https://git.openjdk.org/jdk8u-dev/pull/37