[llvm] ARM: Avoid repeating hardcoded windows division libcall names (PR #143834)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm updated https://github.com/llvm/llvm-project/pull/143834

>From cd4ef8ace02f9338c58e87ee2ea98b20a9daeb65 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Thu, 12 Jun 2025 14:06:38 +0900
Subject: [PATCH] ARM: Avoid repeating hardcoded windows division libcall names

This is properly set in the runtime libcall info, so query
the name.
---
 llvm/lib/Target/ARM/ARMISelLowering.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index f17eb72bb2e26..5b3664c4e961f 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -9998,13 +9998,13 @@ SDValue ARMTargetLowering::LowerWindowsDIVLibCall(SDValue Op, SelectionDAG &DAG,
   SDLoc dl(Op);
 
   const auto &DL = DAG.getDataLayout();
-
-  const char *Name = nullptr;
+  RTLIB::Libcall LC;
   if (Signed)
-    Name = (VT == MVT::i32) ? "__rt_sdiv" : "__rt_sdiv64";
+    LC = VT == MVT::i32 ? RTLIB::SDIVREM_I32 : RTLIB::SDIVREM_I64;
   else
-    Name = (VT == MVT::i32) ? "__rt_udiv" : "__rt_udiv64";
+    LC = VT == MVT::i32 ? RTLIB::UDIVREM_I32 : RTLIB::UDIVREM_I64;
 
+  const char *Name = getLibcallName(LC);
   SDValue ES = DAG.getExternalSymbol(Name, getPointerTy(DL));
 
   ARMTargetLowering::ArgListTy Args;