From 80720a921987e36c83236d375919172afd20d79c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 30 Nov 2005 20:40:54 +0000
Subject: [PATCH] Fix Regression/CodeGen/PowerPC/2005-11-30-vastart-crash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24547 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCISelLowering.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 1ef1d3e9d0e..0f7afbc7fbf 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -434,7 +434,8 @@ PPCTargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
         needsLoad = true;
       }
       break;
-    case MVT::i64: ObjSize = 8;
+    case MVT::i64:
+      ObjSize = 8;
       if (!ArgLive) break;
       if (GPR_remaining > 0) {
         SDOperand argHi, argLo;
@@ -530,7 +531,10 @@ PPCTargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
       SDOperand PtrOff = DAG.getConstant(4, getPointerTy());
       FIN = DAG.getNode(ISD::ADD, MVT::i32, FIN, PtrOff);
     }
-    DAG.setRoot(DAG.getNode(ISD::TokenFactor, MVT::Other, MemOps));
+    if (!MemOps.empty()) {
+      MemOps.push_back(DAG.getRoot());
+      DAG.setRoot(DAG.getNode(ISD::TokenFactor, MVT::Other, MemOps));
+    }
   }
   
   // Finally, inform the code generator which regs we return values in.