From 294cefacabb7dbf954cbb70dbb724745eeba3abc Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Sat, 29 Aug 2026 00:25:20 +0800
Subject: [CodeGen] Bind virtual register types once

---
 backend/lib/CodeGen/MachineRegisterInfo.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

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

diff --git a/backend/lib/CodeGen/MachineRegisterInfo.cpp b/backend/lib/CodeGen/MachineRegisterInfo.cpp
index cc1cbdb..6147717 100644
--- a/backend/lib/CodeGen/MachineRegisterInfo.cpp
+++ b/backend/lib/CodeGen/MachineRegisterInfo.cpp
@@ -339,9 +339,10 @@ Expected<LowLevelType> MachineRegisterInfo::getType(Register Reg) const {
   auto Info = virtualRegisterInfo(Reg);
   if (!Info)
     return std::unexpected(Info.error());
-  if (!Info->get().Type)
+  const std::optional<LowLevelType> &Type = Info->get().Type;
+  if (!Type)
     return makeUnexpected(ErrorCode::InvalidArgument, "virtual register has no LowLevelType");
-  return *Info->get().Type;
+  return *Type;
 }
 
 Expected<std::size_t> MachineRegisterInfo::replaceRegWith(Register OldReg, Register NewReg) {
-- 
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