Support value numbering of multi-dimensional array accesses

[BruceForstall]

Currently, fgValueNumberTree of GT_ARR_ELEM creates a unique value number for every node.

It also doesn't model the IndexOutOfRangeException for the bounds checks.

Related: #60785

category:cq
theme:md-arrays
skill-level:expert
cost:large

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Issue Details

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Currently, fgValueNumberTree of GT_ARR_ELEM creates a unique value number for every node.

It also doesn't model the IndexOutOfRangeException for the bounds checks.

Related: #60785

category:cq
theme:md-arrays
skill-level:expert
cost:large

Author:	BruceForstall
Assignees:	-
Labels:	area-CodeGen-coreclr
Milestone:	Future

[BruceForstall]

After #70271, this is irrelevant. #71678 will remove the related code.