RFR: 8278623: compiler/vectorapi/reshape/TestVectorCastAVX512.java after JDK-8259610 [v2]

[Mai Đặng Quân Anh]

> The problem is that loading vector from byte array requires the vector shape to support byte vector before the reinterpretation to the correct type. The failure to intrinsify seems to stop the compilation of the method, leads to IR verification failure. The patch simply changes the argument of vector cast methods to correct types.
> 
> Thanh you very much.

Mai Đặng Quân Anh has updated the pull request incrementally with one additional commit since the last revision:

  address reviews

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6852/files
  - new: https://git.openjdk.java.net/jdk/pull/6852/files/30a466ef..c853ce6b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6852&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6852&range=00-01

  Stats: 3 lines in 2 files changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6852.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6852/head:pull/6852

PR: https://git.openjdk.java.net/jdk/pull/6852