RFR: 8312579: [JVMCI] JVMCI support for virtual Vector API objects

[Gergö Barany]

Optimized Vector API values are represented as raw values in SIMD registers. When deoptimizing with such a value in the state, a Java heap object must be recreated. HotSpot has a special "Location::vector" location type to mark Vector API values, and it knows how to materialize such values.

Extend the JVMCI code installer to mark the appropriate values as vectors so that JVMCI-compiled code can also deoptimize with Vector API values in SIMD registers.

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

Commit messages:
 - 8312579: [JVMCI] JVMCI support for virtual Vector API objects

Changes: https://git.openjdk.org/jdk/pull/15003/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15003&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312579
  Stats: 23 lines in 4 files changed: 16 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/15003.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15003/head:pull/15003

PR: https://git.openjdk.org/jdk/pull/15003