[llvm] [CodeGen][MISched] Add misched post-regalloc bidirectional scheduling (PR #77138)

[Wang Pengcheng via llvm-commits]

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@@ -497,11 +501,13 @@ bool PostMachineScheduler::runOnMachineFunction(MachineFunction &mf) {
   // Instantiate the selected scheduler for this target, function, and
   // optimization level.
   std::unique_ptr<ScheduleDAGInstrs> Scheduler(createPostMachineScheduler());
-  ScheduleDAGMI::DumpDirection D;
+  ScheduleDAGInstrs::DumpDirection D;
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wangpc-pp wrote:

Why do we need to change `ScheduleDAGMI` to `ScheduleDAGInstrs`?

https://github.com/llvm/llvm-project/pull/77138