[vectorIntrinsics] RFR: 8265107: Fix effect problems [v2]

[Wang Huang]

> * Fix some effect problems

Wang Huang has updated the pull request incrementally with one additional commit since the last revision:

  optimize insert's registers

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Changes:
  - all: https://git.openjdk.java.net/panama-vector/pull/66/files
  - new: https://git.openjdk.java.net/panama-vector/pull/66/files/4939caa5..44e0b8f2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=66&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=66&range=00-01

  Stats: 156 lines in 2 files changed: 0 ins; 39 del; 117 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/66.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/66/head:pull/66

PR: https://git.openjdk.java.net/panama-vector/pull/66