[llvm] [RISCV] postpone removal in initundef pass (PR #71661)

[Craig Topper via llvm-commits]

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@@ -290,6 +293,7 @@ bool RISCVInitUndef::runOnMachineFunction(MachineFunction &MF) {
   MRI = &MF.getRegInfo();
   TII = ST->getInstrInfo();
   TRI = MRI->getTargetRegisterInfo();
+  DeadInsts.clear();
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topperc wrote:

Why not clear at the end?

https://github.com/llvm/llvm-project/pull/71661