[llvm] [llvm][CodeGen] Address the issue of multiple resource reservations in window scheduling (PR #100301)

[Hua Tian via llvm-commits]

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@@ -451,7 +451,6 @@ int WindowScheduler::calculateMaxCycle(ScheduleDAGInstrs &DAG,
       }
       RM.reserveResources(*SU, CurCycle);
     }
-    RM.reserveResources(*SU, CurCycle);
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huaatian wrote:

This line is really redundant. It will cause the instruction to occupy too many resources and fail to emit properly.

https://github.com/llvm/llvm-project/pull/100301