RFR: 8301739: AArch64: Add optimized rules for vector compare with immediate for SVE

[changpeng1997]

We can use SVE compare-with-integer-immediate instructions like cmpgt(immediate)[1] to avoid the extra scalar2vector operations.

The following instruction sequence


movi    v17.16b, #12
cmpgt   p0.b, p7/z, z16.b, z17.b


can be optimized to:


cmpgt   p0.b, p7/z, z16.b, #12


This patch does the following:
1. Add SVE compare-with-7bit-unsigned-immediate instructions to C2's backend.
SVE cmp<cc>(immediate) instructions can support vector comparing with 7bit unsigned integer immediate (range from 0 to 
127)or 5bit signed integer immediate (range from -16 to 15).

2. Add optimized match rules to generate the compare-with-immediate instructions.

[1]: https://developer.arm.com/documentation/ddi0596/2021-12/SVE-Instructions/CMP-cc---immediate---Compare-vector-to-immediate-

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Commit messages:
 - 8301739: AArch64: Add optimized rules for vector compare with immediate for SVE

Changes: https://git.openjdk.org/jdk/pull/13200/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13200&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301739
  Stats: 895 lines in 8 files changed: 578 ins; 4 del; 313 mod
  Patch: https://git.openjdk.org/jdk/pull/13200.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13200/head:pull/13200

PR: https://git.openjdk.org/jdk/pull/13200