From 2c3a4a9334ea0881e79644ed9c25dde442ec22d2 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Wed, 22 Jun 2022 12:07:27 +0100
Subject: [PATCH] [DAG] SelectionDAG::GetDemandedBits - don't recurse back into
 GetDemandedBits

Another minor cleanup as we work toward removing GetDemandedBits entirely - call SimplifyMultipleUseDemandedBits directly.
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index c2820c1c9902..213874fb4933 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2491,8 +2491,8 @@ SDValue SelectionDAG::GetDemandedBits(SDValue V, const APInt &DemandedBits) {
       if (Amt >= DemandedBits.getBitWidth())
         break;
       APInt SrcDemandedBits = DemandedBits << Amt;
-      if (SDValue SimplifyLHS =
-              GetDemandedBits(V.getOperand(0), SrcDemandedBits))
+      if (SDValue SimplifyLHS = TLI->SimplifyMultipleUseDemandedBits(
+              V.getOperand(0), SrcDemandedBits, *this))
         return getNode(ISD::SRL, SDLoc(V), V.getValueType(), SimplifyLHS,
                        V.getOperand(1));
     }