[llvm] [HEXAGON] [MachinePipeliner] Fix the DAG in case of dependent phis. (PR #135925)

[Ryotaro Kasuga via llvm-commits]

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@@ -51,6 +53,6 @@ declare i32 @llvm.hexagon.M2.mpy.ll.s0(i32, i32) #1
 ; Function Attrs: nounwind readnone
 declare i32 @llvm.hexagon.M2.mpy.acc.sat.ll.s0(i32, i32, i32) #1
 
-attributes #0 = { nounwind "target-cpu"="hexagonv60" }
+attributes #0 = { nounwind "target-cpu"="hexagonv68" }
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kasuga-fj wrote:

nit Unrelated changes should be avoided.

https://github.com/llvm/llvm-project/pull/135925