RFR: 8302328: [s390x] Simplify asm_assert definition [v6]

[Amit Kumar]

> This PR cleanups some assert statements and specifies branch condition at calling site itself. Remaining asm_assert methods are inlined as well.

Amit Kumar has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 17 commits:

 - Merge branch 'master' into simplify_assert
 - illtrap cleanup
 - address comment from Martin
 - Merge branch 'master' into simplify_assert
 - added id to illtrap
 - address lutz comment & revert inlining
 - Revert "inline asm_assert"
 - Revert "inlined assert method"
 - Revert "added inline keyword before function implementation"
 - added inline keyword before function implementation
 - ... and 7 more: https://git.openjdk.org/jdk/compare/35e7bc21...d830eead

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

Changes: https://git.openjdk.org/jdk/pull/12822/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12822&range=05
  Stats: 85 lines in 9 files changed: 3 ins; 39 del; 43 mod
  Patch: https://git.openjdk.org/jdk/pull/12822.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/12822/head:pull/12822

PR: https://git.openjdk.org/jdk/pull/12822