[Test] Move test for D143726 to LICM

Seems that it's a more appropriate place to do this transform.

Author: xortator

llvm/test/Transforms/LoopInstSimplify/loop_invariant.ll renamed to llvm/test/Transforms/LICM/min_max.ll

@@ -1,6 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S %s -passes=loop-instsimplify | FileCheck %s
-; RUN: opt -S %s -passes='loop-mssa(loop-instsimplify)' -verify-memoryssa | FileCheck %s
+; RUN: opt -S %s -passes='loop-mssa(licm)'  -verify-memoryssa  | FileCheck %s
 
 ; TODO: turn to %iv <u umin(inv_1, inv_2) and hoist it out of loop.
 define i32 @test_ult(i32 %start, i32 %inv_1, i32 %inv_2) {