[llvm] [MachineScheduler][RISCV] Release the pending queue base on condition (PR #125468)

[Pengcheng Wang via llvm-commits]

================
@@ -1068,6 +1068,13 @@ class SchedBoundary {
   /// Dump the state of the information that tracks resource usage.
   void dumpReservedCycles() const;
   void dumpScheduledState() const;
+
+  void bumpCycleUntilReleaseSUFromPending(SUnit *SU) {
+    while (!Pending.empty() && llvm::find(Pending, SU) != Pending.end()) {
----------------
wangpc-pp wrote:

We don't need `!Pending.empty()` since `llvm::find` will return `end()` anyway for an empty container.

https://github.com/llvm/llvm-project/pull/125468