From: Chris Lattner <sabre@nondot.org>
Date: Thu, 12 May 2005 06:54:21 +0000 (+0000)
Subject: Make sure to expand all nodes, avoiding unintentional node duplication.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=44d105b7faf5672a2af61a3f0fdfed0d437d5777;p=oota-llvm.git

Make sure to expand all nodes, avoiding unintentional node duplication.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21889 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index b8c4315e512..5cc148a84f5 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2168,6 +2168,13 @@ ExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) {
 
   TargetLowering::ArgListTy Args;
   const Type *ArgTy = MVT::getTypeForValueType(Source.getValueType());
+
+  // Expand the source, then glue it back together for the call.  We must expand
+  // the source in case it is shared (this pass of legalize must traverse it).
+  SDOperand SrcLo, SrcHi;
+  ExpandOp(Source, SrcLo, SrcHi);
+  Source = DAG.getNode(ISD::BUILD_PAIR, Source.getValueType(), SrcLo, SrcHi);
+
   Args.push_back(std::make_pair(Source, ArgTy));
 
   // We don't care about token chains for libcalls.  We just use the entry