[llvm] [NFC][MI] Tidy Up RegState enum use (2/2) (PR #177090)

[Craig Topper via llvm-commits]

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@@ -1430,7 +1430,8 @@ bool AArch64ExpandPseudo::expandMI(MachineBasicBlock &MBB,
       if (MF.getSubtarget<AArch64Subtarget>().isTargetILP32()) {
         auto TRI = MBB.getParent()->getSubtarget().getRegisterInfo();
         unsigned Reg32 = TRI->getSubReg(DstReg, AArch64::sub_32);
-        unsigned DstFlags = MI.getOperand(0).getTargetFlags();
+        RegState DstFlags =
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topperc wrote:

This code seems very odd. Are we hiding information in the flags of an implicit register operand?

https://github.com/llvm/llvm-project/pull/177090