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

[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.

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Commit messages:
 - concretize vector cast methods arguments

Changes: https://git.openjdk.java.net/jdk/pull/6852/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6852&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8278623
  Stats: 439 lines in 10 files changed: 123 ins; 69 del; 247 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