[PATCH] D81670: [TTI] Expose isNoopAddrSpaceCast from TLI.[SROA] Teach SROA to recognize no-op addrspacecast.

[Michael Liao via Phabricator via llvm-commits]

hliao added a comment.

In D81670#2087974 <https://reviews.llvm.org/D81670#2087974>, @arsenm wrote:

> We should instead allow bitcast to perform no-op addrspacecasts


That may be a little bit challenging as so far no-op `addrspacecast` is target-specific. There may be no TTI available when `bitcast` is constructed.


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