RFR: 8311583: tableswitch broken by JDK-8310577 [v2]

[Coleen Phillimore]

> I demoted some types for -Wconversion warnings but they're supposed to be larger types to catch overflow for tableswitch and lookupswitch.  Restored old code (except int64_t not jlong).
> Tested with tier1-4.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  David's feedback.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14788/files
  - new: https://git.openjdk.org/jdk/pull/14788/files/172dee7e..63c28c0a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14788&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14788&range=00-01

  Stats: 89 lines in 4 files changed: 45 ins; 40 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/14788.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14788/head:pull/14788

PR: https://git.openjdk.org/jdk/pull/14788