RFR: 8294190: Incorrect check messages in SharedRuntime::generate_uncommon_trap_blob [v2]

[Aleksey Shipilev]

> The checks added by [JDK-8141133](https://bugs.openjdk.org/browse/JDK-8141133) are not consistent. The blocks that verify `Deoptimization::Unpack_uncommon_trap` kind are saying "last_Java_fp not cleared" for some arches.

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  generate_deopt_blob -> generate_uncommon_trap_blob

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/10388/files
  - new: https://git.openjdk.org/jdk/pull/10388/files/ead8f13f..c3a93672

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10388&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10388&range=00-01

  Stats: 4 lines in 4 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/10388.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10388/head:pull/10388

PR: https://git.openjdk.org/jdk/pull/10388