From f12a3da5a7aea556e326f50163c961c1ad5a4aa9 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Tue, 17 Sep 2019 13:27:02 +0000
Subject: [PATCH] [X86] X86DAGToDAGISel::tryFoldLoad - assert root/parent
 pointers are non-null. NFCI.

Silences a static analyzer warning.

llvm-svn: 372118
---
 llvm/lib/Target/X86/X86ISelDAGToDAG.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
index 8e85cd4..9ec0f89 100644
--- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -2581,6 +2581,7 @@ bool X86DAGToDAGISel::tryFoldLoad(SDNode *Root, SDNode *P, SDValue N,
                                   SDValue &Base, SDValue &Scale,
                                   SDValue &Index, SDValue &Disp,
                                   SDValue &Segment) {
+  assert(Root && P && "Unknown root/parent nodes");
   if (!ISD::isNON_EXTLoad(N.getNode()) ||
       !IsProfitableToFold(N, P, Root) ||
       !IsLegalToFold(N, P, Root, OptLevel))
-- 
2.7.4