[llvm] [Mips] Fix mfhi/mflo hazard miscompilation about div and mult (PR #91449)

[YunQiang Su via llvm-commits]

================
@@ -743,6 +743,12 @@ bool MipsDelaySlotFiller::searchRange(MachineBasicBlock &MBB, IterTy Begin,
     bool InMicroMipsMode = STI.inMicroMipsMode();
     const MipsInstrInfo *TII = STI.getInstrInfo();
     unsigned Opcode = (*Slot).getOpcode();
+
+    if ((CurrI->getOpcode() == Mips::MFLO ||
----------------
wzssyqa wrote:

No MFHI here?

https://github.com/llvm/llvm-project/pull/91449