RFR: 8373696: AArch64: Refine post-call NOPs

[Ruben]

Extend MOVK-based scheme to MOVK/MOVZ allowing to store 19 bits of metadata.

Choose number of metadata slots in post-call NOP sequence between 1 and 2 depending on the offset from the CodeBlob header.

Additionally, implement ADR/ADRP-based metadata storage - that provides 22 bits instead of 16 bits to store metadata. This can be enabled via UsePostCallSequenceWithADRP option.


 Renaissance 0.15.0 benchmark results (MOVK-based scheme)
 Neoverse V1.
 The runs were limited to 16 cores.

 Number of runs:
   6 for baseline, 6 for the changes - interleaved pairs.

 Command line:
  java -jar renaissance-jmh-0.15.0.jar \
    -bm avgt -gc true -v extra \
    -jvmArgsAppend '-Xbatch -XX:-UseDynamicNumberOfCompilerThreads \
      -XX:-CICompilerCountPerCPU -XX:ActiveProcessorCount=16 \
      -XX:CICompilerCount=2 -Xms8g -Xmx8g -XX:+AlwaysPreTouch \
      -XX:+UseG1GC'

 The change is geometric mean of ratios across 6 the pairs of runs.

  |  Benchmark                                            |  Change  | 90% CI for the change |
  | ----------------------------------------------------- | -------- | --------------------- |
  | org.renaissance.actors.JmhAkkaUct.run                 |  -0.215% |    -2.652% to  1.357% |
  | org.renaissance.actors.JmhReactors.run                |  -0.166% |    -1.974% to  1.775% |
  | org.renaissance.jdk.concurrent.JmhFjKmeans.run        |   0.222% |    -0.492% to  0.933% |
  | org.renaissance.jdk.concurrent.JmhFutureGenetic.run   |  -1.880% |    -2.438% to -1.343% |
  | org.renaissance.jdk.streams.JmhMnemonics.run          |  -0.500% |    -1.032% to  0.089% |
  | org.renaissance.jdk.streams.JmhParMnemonics.run       |  -0.740% |    -2.092% to  0.639% |
  | org.renaissance.jdk.streams.JmhScrabble.run           |  -0.031% |    -0.353% to  0.310% |
  | org.renaissance.neo4j.JmhNeo4jAnalytics.run           |  -0.873% |    -2.323% to  0.427% |
  | org.renaissance.rx.JmhRxScrabble.run                  |  -0.512% |    -1.121% to  0.049% |
  | org.renaissance.scala.dotty.JmhDotty.run              |  -0.219% |    -1.108% to  0.708% |
  | org.renaissance.scala.sat.JmhScalaDoku.run            |  -2.750% |    -6.426% to -0.827% |
  | org.renaissance.scala.stdlib.JmhScalaKmeans.run       |   0.046% |    -0.383% to  0.408% |
  | org.renaissance.scala.stm.JmhPhilosophers.run         |   1.497% |    -0.955% to  3.923% |
  | org.renaissance.scala.stm.JmhScalaStmBench7.run       |  -0.096% |    -0.773% to  0.586% |
  | org.renaissance.twitter.finagle.JmhFinagleChirper.run |  -0.200% |    -1.143% to  0.698% |
  | org.renaissance.twitter.finagle.JmhFinagleHttp.run    |  -0.865% |    -1.328% to -0.251% |
  |------------------------------------------------------------------------------------------|
  | Overall geometric mean: -0.459% change (90% CI: [-0.839%, -0.097%])                      |
  |------------------------------------------------------------------------------------------|

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

Commit messages:
 - 8373696: AArch64: Refine post-call NOPs
 - 8373696: AArch64: C1: Embed FP constants into the main code

Changes: https://git.openjdk.org/jdk/pull/28855/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28855&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373696
  Stats: 573 lines in 12 files changed: 473 ins; 42 del; 58 mod
  Patch: https://git.openjdk.org/jdk/pull/28855.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28855/head:pull/28855

PR: https://git.openjdk.org/jdk/pull/28855