From 6741dd0696d3b9726e506823a43e96c6b8ba575e Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Mon, 2 Oct 2023 12:41:08 +0100
Subject: [PATCH] Fix MSVC "cannot convert from 'llvm::Register' to
 'llvm::MCRegister'" build error. NFCI.

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

diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp
index a52b395dcfc846..c388cf41df55d6 100644
--- a/llvm/lib/CodeGen/RegisterCoalescer.cpp
+++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp
@@ -1434,8 +1434,9 @@ bool RegisterCoalescer::reMaterializeTrivialDef(const CoalescerPair &CP,
 
         assert(MO.isImplicit() && MO.getReg().isPhysical() &&
                (MO.isDead() ||
-                (DefSubIdx && (TRI->getSubReg(MO.getReg(), DefSubIdx) ==
-                               MCRegister(NewMI.getOperand(0).getReg())))));
+                (DefSubIdx &&
+                 (TRI->getSubReg(MO.getReg(), DefSubIdx) ==
+                  MCRegister((unsigned)NewMI.getOperand(0).getReg())))));
         NewMIImplDefs.push_back(MO.getReg().asMCReg());
       } else {
         assert(MO.getReg() == NewMI.getOperand(0).getReg() &&