[clang] [llvm] [CodeGenPrepare] Failure to hoist bitcast to legal type causes register splitting (PR #207568)

[Simon Pilgrim via cfe-commits]

RKSimon wrote:

> HI @RKSimon , gently pinging this PR when you get a chance. Thanks!

Make sure you re-request review! That way it gets added back to my review requested feed.

https://github.com/llvm/llvm-project/pull/207568