[llvm] [Mips] Fix result type of MAdd/MSub nodes (PR #117455)

[Sergei Barannikov via llvm-commits]

https://github.com/s-barannikov created https://github.com/llvm/llvm-project/pull/117455

They have one "untyped" result in `MipsInstrInfo.td`, and this type is used in DAG patterns.

>From dfa62f8d5642d5b84f2abe37e0c004c5ad119267 Mon Sep 17 00:00:00 2001
From: Sergei Barannikov <barannikov88 at gmail.com>
Date: Sun, 24 Nov 2024 03:11:42 +0300
Subject: [PATCH] [Mips] Fix result type of MAdd/MSub nodes

They have one "untyped" result in MipsInstrInfo.td,
and this type is used in DAG patterns.
---
 llvm/lib/Target/Mips/MipsISelLowering.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp
index d90348153fd3e1..be7fb5bf05d02b 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp
@@ -1102,8 +1102,7 @@ static SDValue performMADD_MSUBCombine(SDNode *ROOTNode, SelectionDAG &CurDAG,
   SDValue MAddOps[3] = {
       CurDAG.getNode(ISD::TRUNCATE, DL, MVT::i32, Mult->getOperand(0)),
       CurDAG.getNode(ISD::TRUNCATE, DL, MVT::i32, Mult->getOperand(1)), ACCIn};
-  EVT VTs[2] = {MVT::i32, MVT::i32};
-  SDValue MAdd = CurDAG.getNode(Opcode, DL, VTs, MAddOps);
+  SDValue MAdd = CurDAG.getNode(Opcode, DL, MVT::Untyped, MAddOps);
 
   SDValue ResLo = CurDAG.getNode(MipsISD::MFLO, DL, MVT::i32, MAdd);
   SDValue ResHi = CurDAG.getNode(MipsISD::MFHI, DL, MVT::i32, MAdd);