[llvm] [LLVM][DAGCombiner] Look through freeze when combining extensions of loads (PR #175022)

[Simon Pilgrim via llvm-commits]

RKSimon wrote:

> ping. :)

re-request review or I don't see it - usually I only check the "review requested" filter these days to try and hold back the deluge.....

https://github.com/llvm/llvm-project/pull/175022