[llvm] [GIsel] import min/max rewrites (PR #188267)

[Osman Yasar via llvm-commits]

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@@ -585,3 +585,106 @@ body:             |
     RET_ReallyLR implicit $q0
 
 ...
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osmanyasar05 wrote:

Can you move these tests into a new file, since they have their own GICombineGroup?

https://github.com/llvm/llvm-project/pull/188267