[llvm] LICM: extend hoist BO assoc to mul case (PR #106991)

[Nikita Popov via llvm-commits]

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@@ -71,7 +115,31 @@ loop:
   br label %loop
 }
 
-; Fold ADD but don't copy NSW if one op has it.
+; Hoist MUL and drop NUW if only one op has it.
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nikic wrote:

I'd probably drop the one nuw/nsw cases, because if we don't fold with both, then we won't do it for one either.

https://github.com/llvm/llvm-project/pull/106991