From 6580ac1c05bd1cbccd2dcd71fd9c2a384ae3db56 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Mon, 3 Aug 2026 18:31:58 +0800
Subject: [CodeGen] Model complete MIR operands

---
 backend/lib/CodeGen/TargetDescription.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'backend/lib/CodeGen/TargetDescription.cpp')

diff --git a/backend/lib/CodeGen/TargetDescription.cpp b/backend/lib/CodeGen/TargetDescription.cpp
index 3a6ea31..a32534d 100644
--- a/backend/lib/CodeGen/TargetDescription.cpp
+++ b/backend/lib/CodeGen/TargetDescription.cpp
@@ -203,6 +203,13 @@ Expected<void> TargetDescription::validateTargetOperand(const OperandDescriptor
     }
     return Registers.validateRegisterMask(*Mask->Mask);
   }
+  if (const auto *Mask = Operand.getIf<LiveOutRegisterMaskOperand>(); Mask != nullptr) {
+    if (!Mask->Mask) {
+      return makeUnexpected(ErrorCode::VerificationError,
+                            "live-out register-mask operand contains a null mask");
+    }
+    return Registers.validateRegisterMask(*Mask->Mask);
+  }
 
   const Register *Reg = Operand.getIf<Register>();
   if (Reg == nullptr)
-- 
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