RFR: 8311023: assert(false) failed: EA: missing memory path [v2]

[Jatin Bhateja]

> Handling missing cases for VectorizedHashCode while collecting memory nodes for propagating new type information through the graph.
> 
> We associate new instance types with CheckCastPP nodes succeeding allocation IR, refresh connectivity of MemoryMerge slices at alias indices corresponding to new instance type and update the memory edges of user memory nodes in the ideal graph to ease out scalar replacements.
> 
> Please review and share feedback.
> 
> Best Regards,
> Jatin

Jatin Bhateja has updated the pull request incrementally with one additional commit since the last revision:

  Rename test.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14764/files
  - new: https://git.openjdk.org/jdk/pull/14764/files/75e1642f..d56563ff

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14764&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14764&range=00-01

  Stats: 0 lines in 1 file changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14764.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14764/head:pull/14764

PR: https://git.openjdk.org/jdk/pull/14764