[llvm] [SelectionDAG] Optimize zero-extended multiplies on targets without native LOHI mul (PR #203135)

[Craig Topper via llvm-commits]

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@@ -1,242 +1,361 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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topperc wrote:

Can we regenerate this in a separate commit so we can see an accurate diff on this file.

https://github.com/llvm/llvm-project/pull/203135