From 9458e6a551548ab143f1ba9466931de20c65d745 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 29 Jun 2007 21:36:04 +0000
Subject: [PATCH] Fix a vector FP constant CSE bug.

llvm-svn: 37814
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 6dcba0d9d6b4..9eee1984af7e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -686,11 +686,16 @@ SDOperand SelectionDAG::getConstantFP(double Val, MVT::ValueType VT,
   AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
   ID.AddDouble(Val);
   void *IP = 0;
-  if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
-    return SDOperand(E, 0);
-  SDNode *N = new ConstantFPSDNode(isTarget, Val, EltVT);
-  CSEMap.InsertNode(N, IP);
-  AllNodes.push_back(N);
+  SDNode *N = NULL;
+  if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))
+    if (!MVT::isVector(VT))
+      return SDOperand(N, 0);
+  if (!N) {
+    N = new ConstantFPSDNode(isTarget, Val, EltVT);
+    CSEMap.InsertNode(N, IP);
+    AllNodes.push_back(N);
+  }
+
   SDOperand Result(N, 0);
   if (MVT::isVector(VT)) {
     SmallVector<SDOperand, 8> Ops;